CN204649939U - A kind of power supply electronic load - Google Patents
A kind of power supply electronic load Download PDFInfo
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- CN204649939U CN204649939U CN201520321288.2U CN201520321288U CN204649939U CN 204649939 U CN204649939 U CN 204649939U CN 201520321288 U CN201520321288 U CN 201520321288U CN 204649939 U CN204649939 U CN 204649939U
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Abstract
The utility model discloses a kind of power supply electronic load, comprise bridge rectifier circuit, the first filtering circuit, MOSFET bridge inverter main circuit, the second filtering circuit, load characteristic regulator circuit and boost rectifying circuit.Beneficial effect is 1.: the characteristic that can adjust load according to actual needs flexibly.2.: feed part is directly that tested power supply is used, has saved valuable electric energy.3.: feed does not directly output to electrical network, other consumer is not affected.4.: due to the thermal losses of this product comparatively prior art greatly reduce, so the volume and weight of equipment can be very little.
Description
Technical field
The utility model relates to a kind of power supply electronic load.
Background technology
Need when testing the performance of power supply to provide an electronic load of simulating.Have level to regulate because resistance and resistance box even load adopt in early days, have fixed resistance value or dead load family curve, its load form is single, and power is little.And actual loading form more complicated, be all dynamic usually and load in time, frequency changes constantly, traditional static load more and more can not meet the demand of power supply test.Therefore, Chinese scholars all in its load form of seeking to substitute, creates the electronic load be made up of resistance, inductance, electric capacity, transistor and integrated circuit.
But existing electronic load circuit power consumption is large, affect other equipment in feed circuit and thermal losses is large.
Utility model content
In view of above content, the utility model provides the electronic load that in a kind of saves energy, not feed circuit, other equipment, thermal losses greatly reduce.
For achieving the above object, the utility model solves the technical scheme that its technical matters adopts and is:
A kind of power supply electronic load, comprises bridge rectifier circuit, the first filtering circuit, MOSFET bridge inverter main circuit, the second filtering circuit, load characteristic regulator circuit and boost rectifying circuit;
Described first filtering circuit comprises the first electric capacity in parallel and the first resistance;
Described second filtering circuit comprises the first inductance, the second inductance and the second electric capacity, one end that one end connects one end of described first inductance, the other end connects described second inductance of described second electric capacity;
Described load characteristic regulator circuit comprises the 4th inductance, the 3rd diode, the first Metal-Oxide Semiconductor field effect transistor, the 3rd electric capacity; One end of described 3rd electric capacity connects the negative pole of described 3rd diode, and the other end connects the drain electrode of described first Metal-Oxide Semiconductor field effect transistor; The source electrode of described first Metal-Oxide Semiconductor field effect transistor connects the positive pole of described 3rd diode; The joint that the source electrode that one end of described 4th inductance connects described first Metal-Oxide Semiconductor field effect transistor is connected with the positive pole of described 3rd diode;
Described boost rectifying circuit comprises the second Metal-Oxide Semiconductor field effect transistor, 3rd Metal-Oxide Semiconductor field effect transistor, transformer, first diode, second diode, 3rd inductance, the grid of described second Metal-Oxide Semiconductor field effect transistor connects one end of the low-voltage coil of described transformer, the source electrode of described 3rd Metal-Oxide Semiconductor field effect transistor connects the other end of the low-voltage coil of described transformer, the positive pole of described first diode connects one end of the high-tension coil of described transformer, the positive pole of described second diode connects the other end of the high-tension coil of described transformer, the negative pole of described first diode, the negative pole of the second diode and one end of the 3rd inductance link together,
Two input ends of described bridge rectifier circuit connect power supply, and two output terminals connect two input ends of the first filtering circuit; Two output terminals of described first filtering circuit connect two input ends of described MOSFET bridge inverter main circuit; Two output terminals of described MOSFET bridge inverter main circuit connect two input ends of described second filtering circuit; Two output terminals of described second filtering circuit connect two input ends of tested power supply; Two output terminals of described tested power supply connect two input ends of described load characteristic regulator circuit; Two output terminals of described load characteristic regulator circuit connect two input ends of described boost rectifying circuit; Two input ends of described boost rectifying circuit connect two input ends of the first filtering circuit.
Its further feature is as follows:
To connect in arbitrary input end in described tested power supply two input ends a shunt, the electric current and voltage of the described tested power supply that is used for sampling.
Due to the utilization of technique scheme, the utility model compared with prior art has following beneficial effect:
1.: the characteristic that can adjust load according to actual needs flexibly.2.: feed part is directly that tested power supply is used, has saved valuable electric energy.3.: feed does not directly output to electrical network, other consumer is not affected.4.: due to the thermal losses of this product comparatively prior art greatly reduce, so the volume and weight of equipment can be very little.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with specific embodiment, content of the present utility model is described in further detail:
Consult Fig. 1, a kind of power supply electronic load, comprise bridge rectifier circuit 1, first filtering circuit 2, MOSFET bridge inverter main circuit 3, second filtering circuit 4, load characteristic regulator circuit 5 and boost rectifying circuit 6;
Described first filtering circuit comprises the first electric capacity C1 in parallel and the first resistance R1;
Described second filtering circuit comprises the first inductance L 1, second inductance L 2 and the second electric capacity C2, one end that one end connects one end of described first inductance, the other end connects described second inductance of described second electric capacity;
Described load characteristic regulator circuit comprises the 4th inductance L 4, the 3rd diode D3, the first Metal-Oxide Semiconductor field effect transistor G, the 3rd electric capacity C3; One end of described 3rd electric capacity connects the negative pole of described 3rd diode, and the other end connects the drain electrode of described first Metal-Oxide Semiconductor field effect transistor; The source electrode of described first Metal-Oxide Semiconductor field effect transistor connects the positive pole of described 3rd diode; The joint that the source electrode that one end of described 4th inductance connects described first Metal-Oxide Semiconductor field effect transistor is connected with the positive pole of described 3rd diode;
Described boost rectifying circuit comprises the second Metal-Oxide Semiconductor field effect transistor E, 3rd Metal-Oxide Semiconductor field effect transistor F, transformer T, first diode D1, second diode D2, 3rd inductance L 3, the grid of described second Metal-Oxide Semiconductor field effect transistor connects one end of the low-voltage coil of described transformer, the source electrode of described 3rd Metal-Oxide Semiconductor field effect transistor connects the other end of the low-voltage coil of described transformer, the positive pole of described first diode connects one end of the high-tension coil of described transformer, the positive pole of described second diode connects the other end of the high-tension coil of described transformer, the negative pole of described first diode, the negative pole of the second diode and one end of the 3rd inductance link together,
Two input ends of described bridge rectifier circuit connect power supply, and two output terminals connect two input ends of the first filtering circuit; Two output terminals of described first filtering circuit connect two input ends of described MOSFET bridge inverter main circuit; Two output terminals of described MOSFET bridge inverter main circuit connect two input ends of described second filtering circuit; Two output terminals of described second filtering circuit connect two input ends of tested power supply; Two output terminals of described tested power supply connect two input ends of described load characteristic regulator circuit; Two output terminals of described load characteristic regulator circuit connect two input ends of described boost rectifying circuit; Two input ends of described boost rectifying circuit connect two input ends of the first filtering circuit.
To connect in arbitrary input end in described tested power supply two input ends a shunt, the electric current and voltage of the described tested power supply that is used for sampling.
Principle of work:
Described bridge rectifier circuit 1 and MOSFET bridge inverter main circuit 3 are common practise, are not described in detail;
The principle of described load characteristic regulator circuit 5 is the phase relations by controlling adjustment output end voltage and electric current to the PWM of the first Metal-Oxide Semiconductor field effect transistor G, if current phase leading voltage, whole electronic load is capacitive load characteristic relative to tested power supply, when voltage and current with phase time then electronic load be purely resistive load, with should current phase lag behind voltage time then in inductive load characteristic.
Above-described embodiment is only for illustrating technical conceive of the present utility model and feature; its object is to person skilled in the art can be understood content of the present utility model and be implemented; protection domain of the present utility model can not be limited with this; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (2)
1. a power supply electronic load, is characterized in that: comprise bridge rectifier circuit, the first filtering circuit, MOSFET bridge inverter main circuit, the second filtering circuit, load characteristic regulator circuit and boost rectifying circuit;
Described first filtering circuit comprises the first electric capacity in parallel and the first resistance;
Described second filtering circuit comprises the first inductance, the second inductance and the second electric capacity, one end that one end connects one end of described first inductance, the other end connects described second inductance of described second electric capacity;
Described load characteristic regulator circuit comprises the 4th inductance, the 3rd diode, the first Metal-Oxide Semiconductor field effect transistor, the 3rd electric capacity; One end of described 3rd electric capacity connects the negative pole of described 3rd diode, and the other end connects the drain electrode of described first Metal-Oxide Semiconductor field effect transistor; The source electrode of described first Metal-Oxide Semiconductor field effect transistor connects the positive pole of described 3rd diode; The joint that the source electrode that one end of described 4th inductance connects described first Metal-Oxide Semiconductor field effect transistor is connected with the positive pole of described 3rd diode;
Described boost rectifying circuit comprises the second Metal-Oxide Semiconductor field effect transistor, 3rd Metal-Oxide Semiconductor field effect transistor, transformer, first diode, second diode, 3rd inductance, the grid of described second Metal-Oxide Semiconductor field effect transistor connects one end of the low-voltage coil of described transformer, the source electrode of described 3rd Metal-Oxide Semiconductor field effect transistor connects the other end of the low-voltage coil of described transformer, the positive pole of described first diode connects one end of the high-tension coil of described transformer, the positive pole of described second diode connects the other end of the high-tension coil of described transformer, the negative pole of described first diode, the negative pole of the second diode and one end of the 3rd inductance link together,
Two input ends of described bridge rectifier circuit connect power supply, and two output terminals connect two input ends of the first filtering circuit; Two output terminals of described first filtering circuit connect two input ends of described MOSFET bridge inverter main circuit; Two output terminals of described MOSFET bridge inverter main circuit connect two input ends of described second filtering circuit; Two output terminals of described second filtering circuit connect two input ends of tested power supply; Two output terminals of described tested power supply connect two input ends of described load characteristic regulator circuit; Two output terminals of described load characteristic regulator circuit connect two input ends of described boost rectifying circuit; Two input ends of described boost rectifying circuit connect two input ends of the first filtering circuit.
2. a kind of power supply electronic load according to claim 1, is characterized in that: a shunt of connecting in the arbitrary input end in described tested power supply two input ends, the electric current and voltage of the described tested power supply that is used for sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321288.2U CN204649939U (en) | 2015-05-19 | 2015-05-19 | A kind of power supply electronic load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321288.2U CN204649939U (en) | 2015-05-19 | 2015-05-19 | A kind of power supply electronic load |
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| Publication Number | Publication Date |
|---|---|
| CN204649939U true CN204649939U (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520321288.2U Expired - Fee Related CN204649939U (en) | 2015-05-19 | 2015-05-19 | A kind of power supply electronic load |
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| CN (1) | CN204649939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459709A (en) * | 2018-12-29 | 2019-03-12 | 四川太牛电子科技有限公司 | A kind of direct current feedback electronic load |
-
2015
- 2015-05-19 CN CN201520321288.2U patent/CN204649939U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459709A (en) * | 2018-12-29 | 2019-03-12 | 四川太牛电子科技有限公司 | A kind of direct current feedback electronic load |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20200519 |