CN203224547U - High-end current detection circuit - Google Patents
High-end current detection circuit Download PDFInfo
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- CN203224547U CN203224547U CN 201320081402 CN201320081402U CN203224547U CN 203224547 U CN203224547 U CN 203224547U CN 201320081402 CN201320081402 CN 201320081402 CN 201320081402 U CN201320081402 U CN 201320081402U CN 203224547 U CN203224547 U CN 203224547U
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- 238000001514 detection method Methods 0.000 title claims abstract description 41
- 230000003321 amplification Effects 0.000 claims abstract description 59
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 59
- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 238000005070 sampling Methods 0.000 claims description 64
- 239000013642 negative control Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 6
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Abstract
The utility model provides a high-end current detection circuit. A sample resistor is in serial connection with a load via a switch unit, a power supply conversion unit converts the power supply voltage into a direct voltage to supply power for the voltage amplification unit, the voltage amplification unit collects a voltage differential of two ends of the sample resistor and amplifies the voltage differential, a voltage dividing output unit divides the voltage outputted by the voltage amplification unit and outputs the divided voltage, thereby achieving detection of a high-end current. By using the high-end current detection circuit, a special integrated circuit used by the prior art is not purchased and a problem of high price of the prior art is overcome; and by using the high-end current detection circuit, a constant current source inside an integrated circuit in the prior art is not used and a problem of low detection accuracy caused by deviation and temperature drift generated by the constant current source is overcome.
Description
Technical field
The utility model relates to high-side current detection technique field, relates in particular to a kind of high-side current detection circuit.
Background technology
High-side current detection circuit mainly is the ohmically voltage of gathering the known resistance connect with load, and outputs in the follow-up components and parts and handle, to obtain flowing through the electric current in the load.
Existing high-end testing circuit generally adopts special-purpose high-side current to gather integrated circuit, and as shown in Figure 1, RL is load, and Q0 is the pmos type switching tube, by the turn-on and turn-off of output control circuit 101 control pmos type switching tube Q0; R is sampling resistor, special IC 102 is connected to the two ends of sampling resistor R by resistance R 01 and R02, gather the pressure drop at sampling resistor R two ends, export by resistance R 03 after again the pressure drop at sampling resistor R two ends being amplified, handle to connect follow-up components and parts, and then the electric current on the load RL that obtains flowing through.
Existing high-end testing circuit adopts special-purpose integrated form circuit, and price is higher; And the inner constant current sources that adopt of special IC 102 might produce deviation and temperature and float etc., cause the accuracy of detection low.
The utility model content
In view of this, the utility model provides a kind of high-end testing circuit, to solve price height and the low problem of accuracy in the available circuit.
To achieve these goals, the existing scheme that proposes is as follows:
A kind of high-side current detection circuit is characterized in that, comprising: power conversion unit, sampling resistor, switch element, voltage amplification unit and dividing potential drop output unit; Wherein:
Supply voltage is converted to DC voltage also to be connected between power supply and the ground for the power conversion unit of described voltage amplification unit power supply, and first output terminal of described power conversion unit links to each other with described voltage amplification unit, second output terminal of described power conversion unit links to each other with an end of described sampling resistor, and second output terminal of described power conversion unit and the link of sampling resistor link to each other with switch element;
The other end of described sampling resistor links to each other with described power supply;
Described switch element links to each other with load;
The voltage amplification unit of gathering the two ends pressure drop of described sampling resistor and amplifying links to each other with the two ends of described sampling resistor respectively, and the output terminal of described voltage amplification unit links to each other with described dividing potential drop output unit;
The dividing potential drop output unit that the output voltage of described voltage amplification unit is carried out exporting after the dividing potential drop links to each other with ground, and the output terminal of described dividing potential drop output unit is the output terminal of described high-side current detection circuit.
Preferably, described power conversion unit comprises: pulse generating circuit, first switching tube, transformer, first diode and electric capacity; Wherein:
The output terminal of described pulse generating circuit links to each other with the grid of described first switching tube, the source ground of described first switching tube, and the drain electrode of described first switching tube links to each other with an end of the primary coil of described transformer;
The other end of described transformer links to each other with described power supply, one end of described transformer secondary output coil links to each other with the positive pole of described first diode, the negative pole of described first diode links to each other with an end of described electric capacity, and the negative pole of described first diode and the link of described electric capacity are first output terminal of described power conversion unit;
The other end of the secondary coil of described transformer links to each other with the other end of described electric capacity, and the other end of described transformer secondary output coil and the link of described electric capacity are second output terminal of described power conversion unit.
Preferably, described voltage amplification unit comprises: first resistance, second resistance, the 3rd resistance and first operational amplifier; Wherein:
One end of described first resistance links to each other with the link of described sampling resistor and described power supply, and the other end of described first resistance links to each other with the normal phase input end of described first operational amplifier;
One end of described second resistance links to each other with the link of second output terminal of described sampling resistor and described power conversion unit, and the other end of described second resistance links to each other with the negative-phase input of described first operational amplifier;
Described the 3rd resistance is connected between the negative-phase input and output terminal of described first operational amplifier;
The forward control end of described first operational amplifier links to each other with first output terminal of described power conversion unit, the negative control end of described first operational amplifier links to each other with the link of second control end of described sampling resistor and described power conversion unit, and the output terminal of described first operational amplifier is the output terminal of described voltage amplification unit.
Preferably, described dividing potential drop output unit comprises: the 4th resistance, the 5th resistance and the 6th resistance; Wherein:
One end of described the 4th resistance links to each other with the output terminal of described voltage amplification unit, and the other end of described the 4th resistance links to each other with described the 5th resistance;
The other end ground connection of described the 5th resistance;
One end of described the 6th resistance links to each other with the link of described the 4th resistance and described the 5th resistance, and the other end of described the 6th resistance is the output terminal of described dividing potential drop output unit.
Preferably, described high-side current detection circuit also comprises: the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and second operational amplifier; Wherein:
One end of described the 7th resistance links to each other with the link of second output terminal of described sampling resistor and described power conversion unit, and the other end of described the 7th resistance links to each other with described the 8th resistance;
The other end ground connection of described the 8th resistance;
One end of described the 9th resistance links to each other with the link of described the 7th resistance and the 8th resistance, and the other end of described the 9th resistance links to each other with the negative-phase input of described second arithmetic device;
Described the tenth resistance is connected between the negative-phase input and output terminal of described second operational amplifier;
The positive input of described second operational amplifier links to each other with the output terminal of described dividing potential drop output unit, the forward control end of described second operational amplifier links to each other with described power supply, the negative control end ground connection of described second operational amplifier, the output terminal of described second operational amplifier is the output terminal of described high-side current detection circuit.
Preferably, described switch element comprises: pmos type switching tube and output control circuit; Wherein:
The source electrode of described pmos type switching tube links to each other with second output terminal of described power conversion unit and the link of described sampling resistor, the drain electrode of described pmos type switching tube links to each other with load, and the grid of described pmos type switching tube links to each other with the output terminal of described output control circuit.
Preferably, described switch element comprises: second switch pipe, the 11 resistance, second diode, output control circuit and nmos type switching tube; Wherein:
The source electrode of described second switch pipe links to each other with direct supply, and the grid of described second switch pipe links to each other with the output terminal of described output control circuit, and the drain electrode of described second switch pipe links to each other with an end of described the 11 resistance;
The other end of described the 11 resistance links to each other with the grid of described nmos type switching tube;
The negative pole of described second diode links to each other with the grid of described nmos type switching tube, and the positive pole of described second diode links to each other with the source electrode of described nmos type switching tube;
The source electrode of described nmos type switching tube links to each other with described load, and the drain electrode of described nmos type switching tube links to each other with the link of described sampling resistor with second output terminal of described power conversion unit.
Preferably, described first switching tube is the nmos type switching tube.
Preferably, described second switch pipe is the pmos type switching tube.
From above-mentioned technical scheme as can be seen, the disclosed high-side current detection circuit of the utility model, described sampling resistor is connected with described load by switch element, it is the power supply of described voltage amplification unit that described power conversion unit is converted to DC voltage with supply voltage, described voltage amplification unit is gathered the two ends pressure drop of described sampling resistor and it is amplified, and undertaken exporting after the dividing potential drop by the output voltage of described dividing potential drop output unit with described voltage amplification unit again, namely realized the detection to high-side current, do not need to buy special IC used in the prior art, solved the prior art problem of ultra-high price; And the disclosed high-side current detection circuit of the utility model does not need to adopt the constant current source of IC interior in the prior art, has solved the deviation that produces because of constant current source and temperature and the low problem of accuracy in detection that causes such as has floated.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the high-side current detection circuit figure of prior art;
Fig. 2 is the disclosed high-side current detection circuit figure of the utility model embodiment;
Fig. 3 is the disclosed high-side current detection circuit figure of another embodiment of the utility model;
Fig. 4 is the disclosed high-side current detection circuit figure of another embodiment of the utility model;
Fig. 5 is the disclosed high-side current detection circuit figure of another embodiment of the utility model;
Fig. 6 is the disclosed high-side current detection circuit figure of another embodiment of the utility model;
Fig. 7 is the disclosed high-side current detection circuit figure of another embodiment of the utility model;
Fig. 8 is the disclosed high-side current detection circuit figure of another embodiment of the utility model.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of high-end testing circuit, to solve price height and the low problem of accuracy in the available circuit.
Concrete, as shown in Figure 2, the high-end testing circuit that the utility model provides comprises: power conversion unit 201, sampling resistor R, voltage amplification unit 202, dividing potential drop output unit 203 and switch element 204; Wherein:
The other end of sampling resistor R links to each other with power supply;
Switch element 204 links to each other with load RL;
Dividing potential drop output unit 203 links to each other with ground, and the output terminal of dividing potential drop output unit 203 is the output terminal of present embodiment high-side current detection circuit.
The concrete course of work is:
The disclosed high-side current detection circuit of the utility model embodiment does not need to buy special IC used in the prior art, has solved the prior art problem of ultra-high price; And the disclosed high-side current detection circuit of the utility model embodiment does not need to adopt the constant current source of IC interior in the prior art, has solved the deviation that produces because of constant current source and temperature and the low problem of accuracy in detection that causes such as has floated.
Another embodiment of the utility model also discloses another high-end testing circuit, as shown in Figure 3, comprising: power conversion unit 201, sampling resistor R, voltage amplification unit 202, dividing potential drop output unit 203 and switch element 204; Wherein: power conversion unit 201 comprises: pulse generating circuit 2011, the first switching tube Q1, transformer T, first diode D1 and the capacitor C.
Concrete connected mode is:
The output terminal of pulse generating circuit 2011 links to each other with the grid of the first switching tube Q1, the source ground of the first switching tube Q1, and the drain electrode of the first switching tube Q1 links to each other with an end of the primary coil of transformer T;
The other end of transformer T primary coil links to each other with power supply VBAT, one end of transformer T secondary coil links to each other with the positive pole of the first diode D1, the negative pole of the first diode D1 links to each other with an end of capacitor C, and the negative pole of the first diode D1 and the link of capacitor C are first output terminal of power conversion unit 201;
The other end of the secondary coil of transformer T links to each other with the other end of capacitor C, and the other end of the secondary coil of transformer T and the link of capacitor C are second output terminal of power conversion unit 201.
Preferably, the first switching tube Q1 is the nmos type switching tube.
The connected mode of other unit and components and parts is same as the previously described embodiments in the present embodiment, repeats no more herein.
Concrete principle of work is:
Another embodiment of the utility model also discloses another high-end testing circuit, as shown in Figure 4, comprising: power conversion unit 201, sampling resistor R, voltage amplification unit 202, pressure output unit 203 and switch element 204; Wherein, voltage amplification unit 202 comprises: first resistance R 1, second resistance R 2, the 3rd resistance R 3 and the first operational amplifier U1A;
Concrete connected mode is:
One end of first resistance R 1 links to each other with the link of power supply VBAT with sampling resistor R, and the other end of first resistance R 1 links to each other with the normal phase input end of the first operational amplifier U1A;
One end of second resistance R 2 links to each other with the link of second output terminal of sampling resistor R and power conversion unit 201, and the other end of second resistance R 2 links to each other with the negative-phase input of the first operational amplifier U1A;
The 3rd resistance R 3 is connected between the negative-phase input and output terminal of the first operational amplifier U1A;
The forward control end of the first operational amplifier U1A links to each other with first output terminal of power conversion unit 201, the negative control end of the first operational amplifier U1A links to each other with the link of second control end of sampling resistor R and power conversion unit 201, and the output terminal of the first operational amplifier U1A is the output terminal of described voltage amplification unit 202.
Other unit and the connected mode of components and parts and among above-mentioned two embodiment any one are identical in the present embodiment, repeat no more herein.
Concrete principle of work is:
Another embodiment of the utility model also discloses another high-end testing circuit, as shown in Figure 5, comprising: power conversion unit 201, sampling resistor R, voltage amplification unit 202, dividing potential drop output unit 203 and switch element 204; Wherein, dividing potential drop output unit 203 comprises: the 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6;
Concrete connected mode is:
One end of the 4th resistance R 4 links to each other with the output terminal of voltage amplification unit 202, and the other end of the 4th resistance R 4 links to each other with the 5th resistance R 5;
The other end ground connection of the 5th resistance R 5;
One end of the 6th resistance R 6 links to each other with the link of the 4th resistance R 4 and the 5th resistance R 5, and the other end of the 6th resistance R 6 is the output terminal of dividing potential drop output unit 203.
Other unit and the connected mode of components and parts and among above-mentioned three embodiment any one are identical in the present embodiment, repeat no more herein.
Concrete principle of work is:
Preferably, the disclosed high-end testing circuit of present embodiment also comprises: the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10 and the second operational amplifier U2A; As shown in Figure 6.
Concrete connected mode is:
One end of the 7th resistance R 7 links to each other with the link of second output terminal of sampling resistor R and power conversion unit 201, and the other end of the 7th resistance R 7 links to each other with the 8th resistance R 8;
The other end ground connection of the 8th resistance R 8;
One end of the 9th resistance R 9 links to each other with the link of the 7th resistance R 7 and the 8th resistance R 8, and the other end of the 9th resistance R 9 links to each other with the negative-phase input of second arithmetic device U2A;
The tenth resistance R 10 is connected between the negative-phase input and output terminal of the second operational amplifier U2A;
The positive input of the second operational amplifier U2A links to each other with the output terminal of dividing potential drop output unit 203, the forward control end of the second operational amplifier U2A links to each other with power supply VBAT, the negative control end ground connection of the second operational amplifier U2A, the output terminal of the second operational amplifier U2A is the output terminal of present embodiment high-side current detection circuit.
Concrete principle of work is:
The disclosed high-side current detection circuit of present embodiment, not only solved the high problem low with accuracy in detection of prior art price, the output signal of the high-side current detection circuit by the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10 and the above-described embodiment of the second operational amplifier U2A is carried out calculus of differences more, has improved the precision of whole high-side current detection circuit output signal.
Another embodiment of the utility model also discloses another high-end testing circuit, as shown in Figure 7, comprising: power conversion unit 201, sampling resistor R, voltage amplification unit 202, dividing potential drop output unit 203 and switch element 204; Wherein, switch element 204 comprises: pmos type switching tube Q0 and output control circuit 101; Wherein:
The source electrode of pmos type switching tube Q0 links to each other with the link of second output terminal of power conversion unit 201 and sampling resistor R, and the drain electrode of pmos type switching tube Q0 links to each other with load RL, and the grid of pmos type switching tube Q0 links to each other with the output terminal of output control circuit 101.
Other unit and the connected mode of components and parts and among above-mentioned five embodiment any one are identical in the present embodiment, repeat no more herein.
Concrete principle of work is:
Another embodiment of the utility model also discloses another high-end testing circuit, as shown in Figure 8, comprising: power conversion unit 201, sampling resistor R, voltage amplification unit 202, dividing potential drop output unit 203 and switch element 204; Wherein, switch element 204 comprises: second switch pipe Q2, the 11 resistance R 11, the second diode D2, nmos type switching tube Q3 and output control circuit 101;
Concrete connected mode is:
The source electrode of second switch pipe Q2 links to each other with direct supply, and the grid of second switch pipe Q2 links to each other with the output terminal of output control circuit 101, and the drain electrode of second switch pipe Q2 links to each other with an end of the 11 resistance R 11;
The other end of the 11 resistance R 11 links to each other with the grid of nmos type switching tube Q3;
The grid of nmos type switching tube Q3 also links to each other with the negative pole of the second diode D2, and the positive pole of the second diode D2 links to each other with the source electrode of nmos type switching tube Q3;
The drain electrode of nmos type switching tube Q3 links to each other with the link of second output terminal of power conversion unit 201 with sampling resistor R, and the source electrode of nmos type switching tube Q3 links to each other with described load RL.
Preferably, second switch pipe Q2 is low power pmos type switching tube.
Preferably, the source electrode of second switch pipe Q2 links to each other with second output terminal of power conversion unit 201 and the link of sampling resistor R.
Other unit and the connected mode of components and parts and among above-mentioned the first five embodiment any one are identical in the present embodiment, repeat no more herein.
Concrete principle of work is:
The disclosed high-side current detection circuit of present embodiment, not only solved the high problem low with accuracy in detection of prior art price, more by replace the pmos type switching tube Q0 among the last embodiment with second switch pipe Q2, the 11 resistance R 11, the second diode D2 and nmos type switching tube Q3, reduced the cost of switching device, and nmos type switching tube Q3 is more not fragile more than former pmos type switching tube Q0.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a high-side current detection circuit is characterized in that, comprising: power conversion unit, sampling resistor, switch element, voltage amplification unit and dividing potential drop output unit; Wherein:
Supply voltage is converted to DC voltage also to be connected between power supply and the ground for the power conversion unit of described voltage amplification unit power supply, and first output terminal of described power conversion unit links to each other with described voltage amplification unit, second output terminal of described power conversion unit links to each other with an end of described sampling resistor, and second output terminal of described power conversion unit and the link of sampling resistor link to each other with switch element;
The other end of described sampling resistor links to each other with described power supply;
Described switch element links to each other with load;
The voltage amplification unit of gathering the two ends pressure drop of described sampling resistor and amplifying links to each other with the two ends of described sampling resistor respectively, and the output terminal of described voltage amplification unit links to each other with described dividing potential drop output unit;
The dividing potential drop output unit that the output voltage of described voltage amplification unit is carried out exporting after the dividing potential drop links to each other with ground, and the output terminal of described dividing potential drop output unit is the output terminal of described high-side current detection circuit.
2. circuit according to claim 1 is characterized in that, described power conversion unit comprises: pulse generating circuit, first switching tube, transformer, first diode and electric capacity; Wherein:
The output terminal of described pulse generating circuit links to each other with the grid of described first switching tube, the source ground of described first switching tube, and the drain electrode of described first switching tube links to each other with an end of the primary coil of described transformer;
The other end of described transformer links to each other with described power supply, one end of described transformer secondary output coil links to each other with the positive pole of described first diode, the negative pole of described first diode links to each other with an end of described electric capacity, and the negative pole of described first diode and the link of described electric capacity are first output terminal of described power conversion unit;
The other end of the secondary coil of described transformer links to each other with the other end of described electric capacity, and the other end of described transformer secondary output coil and the link of described electric capacity are second output terminal of described power conversion unit.
3. circuit according to claim 1 is characterized in that, described voltage amplification unit comprises: first resistance, second resistance, the 3rd resistance and first operational amplifier; Wherein:
One end of described first resistance links to each other with the link of described sampling resistor and described power supply, and the other end of described first resistance links to each other with the normal phase input end of described first operational amplifier;
One end of described second resistance links to each other with the link of second output terminal of described sampling resistor and described power conversion unit, and the other end of described second resistance links to each other with the negative-phase input of described first operational amplifier;
Described the 3rd resistance is connected between the negative-phase input and output terminal of described first operational amplifier;
The forward control end of described first operational amplifier links to each other with first output terminal of described power conversion unit, the negative control end of described first operational amplifier links to each other with the link of second control end of described sampling resistor and described power conversion unit, and the output terminal of described first operational amplifier is the output terminal of described voltage amplification unit.
4. circuit according to claim 1 is characterized in that, described dividing potential drop output unit comprises: the 4th resistance, the 5th resistance and the 6th resistance; Wherein:
One end of described the 4th resistance links to each other with the output terminal of described voltage amplification unit, and the other end of described the 4th resistance links to each other with described the 5th resistance;
The other end ground connection of described the 5th resistance;
One end of described the 6th resistance links to each other with the link of described the 4th resistance and described the 5th resistance, and the other end of described the 6th resistance is the output terminal of described dividing potential drop output unit.
5. circuit according to claim 4 is characterized in that, also comprises: the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance and second operational amplifier; Wherein:
One end of described the 7th resistance links to each other with the link of second output terminal of described sampling resistor and described power conversion unit, and the other end of described the 7th resistance links to each other with described the 8th resistance;
The other end ground connection of described the 8th resistance;
One end of described the 9th resistance links to each other with the link of described the 7th resistance and the 8th resistance, and the other end of described the 9th resistance links to each other with the negative-phase input of described second arithmetic device;
Described the tenth resistance is connected between the negative-phase input and output terminal of described second operational amplifier;
The positive input of described second operational amplifier links to each other with the output terminal of described dividing potential drop output unit, the forward control end of described second operational amplifier links to each other with described power supply, the negative control end ground connection of described second operational amplifier, the output terminal of described second operational amplifier is the output terminal of described high-side current detection circuit.
6. circuit according to claim 1 is characterized in that, described switch element comprises: pmos type switching tube and output control circuit; Wherein:
The source electrode of described pmos type switching tube links to each other with second output terminal of described power conversion unit and the link of described sampling resistor, the drain electrode of described pmos type switching tube links to each other with load, and the grid of described pmos type switching tube links to each other with the output terminal of described output control circuit.
7. circuit according to claim 1 is characterized in that, described switch element comprises: second switch pipe, the 11 resistance, second diode, output control circuit and nmos type switching tube; Wherein:
The source electrode of described second switch pipe links to each other with direct supply, and the grid of described second switch pipe links to each other with the output terminal of described output control circuit, and the drain electrode of described second switch pipe links to each other with an end of described the 11 resistance;
The other end of described the 11 resistance links to each other with the grid of described nmos type switching tube;
The negative pole of described second diode links to each other with the grid of described nmos type switching tube, and the positive pole of described second diode links to each other with the source electrode of described nmos type switching tube;
The source electrode of described nmos type switching tube links to each other with described load, and the drain electrode of described nmos type switching tube links to each other with the link of described sampling resistor with second output terminal of described power conversion unit.
8. circuit according to claim 2 is characterized in that, described first switching tube is the nmos type switching tube.
9. circuit according to claim 7 is characterized in that, described second switch pipe is the pmos type switching tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081402 CN203224547U (en) | 2013-02-20 | 2013-02-20 | High-end current detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081402 CN203224547U (en) | 2013-02-20 | 2013-02-20 | High-end current detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN203224547U true CN203224547U (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320081402 Expired - Lifetime CN203224547U (en) | 2013-02-20 | 2013-02-20 | High-end current detection circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016179964A1 (en) * | 2015-05-08 | 2016-11-17 | 中兴通讯股份有限公司 | Detection circuit and detection method for high-side current |
| CN106505526A (en) * | 2016-12-03 | 2017-03-15 | 中国电子科技集团公司第四十三研究所 | One kind is used for motor-driven high-end over-current protection circuit topological structure |
| CN107888053A (en) * | 2017-11-14 | 2018-04-06 | 中国电子产品可靠性与环境试验研究所 | Sample circuit and electric pressure converter |
| CN110622010A (en) * | 2016-11-21 | 2019-12-27 | 韦特里西提公司 | Current shunt monitor |
-
2013
- 2013-02-20 CN CN 201320081402 patent/CN203224547U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016179964A1 (en) * | 2015-05-08 | 2016-11-17 | 中兴通讯股份有限公司 | Detection circuit and detection method for high-side current |
| CN110622010A (en) * | 2016-11-21 | 2019-12-27 | 韦特里西提公司 | Current shunt monitor |
| CN110622010B (en) * | 2016-11-21 | 2021-10-29 | 韦特里西提公司 | Current shunt monitor |
| CN106505526A (en) * | 2016-12-03 | 2017-03-15 | 中国电子科技集团公司第四十三研究所 | One kind is used for motor-driven high-end over-current protection circuit topological structure |
| CN107888053A (en) * | 2017-11-14 | 2018-04-06 | 中国电子产品可靠性与环境试验研究所 | Sample circuit and electric pressure converter |
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Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 100101 Beijing city Chaoyang District Anxiang Beili 11 B block 8 layer Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
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Granted publication date: 20131002 |
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