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JPS5571172A - Direct current power source circuit - Google Patents

Direct current power source circuit

Info

Publication number
JPS5571172A
JPS5571172A JP14329678A JP14329678A JPS5571172A JP S5571172 A JPS5571172 A JP S5571172A JP 14329678 A JP14329678 A JP 14329678A JP 14329678 A JP14329678 A JP 14329678A JP S5571172 A JPS5571172 A JP S5571172A
Authority
JP
Japan
Prior art keywords
reference voltage
comparator
control circuit
low
overvoltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14329678A
Other languages
Japanese (ja)
Inventor
Tomohisa Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14329678A priority Critical patent/JPS5571172A/en
Publication of JPS5571172A publication Critical patent/JPS5571172A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To carry out performance tests automatically and rapidly, by changing the output voltage of a voltage converter by means of a control circuit, and by deciding the non-defectiveness or defectiveness of the operation of overvoltage and low- tension detecting circuits by the comparison detecting levels of the detecting circuits.
CONSTITUTION: Reference voltage in a reference voltage source 19 is high set by means of a control circuit 18 in order to carry out an overvoltage performance test. The output voltage of a voltage converter 2 is brought to an overvoltage condition, applied to comparators 5, 6 and compared with reference voltage for detection from reference voltage sources 7, 8. Thus, a comparison detection level of the comparator 5 alters, and that of the comparator 6 does not vary, but the operation of the comparator 5 can be identified by decision-treating the conditions of these comparison detecting levels by means of the control circuit 18. When executing a low-tension performance test, the reference voltage of the reference voltage source 19 may low be set.
COPYRIGHT: (C)1980,JPO&Japio
JP14329678A 1978-11-22 1978-11-22 Direct current power source circuit Pending JPS5571172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14329678A JPS5571172A (en) 1978-11-22 1978-11-22 Direct current power source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14329678A JPS5571172A (en) 1978-11-22 1978-11-22 Direct current power source circuit

Publications (1)

Publication Number Publication Date
JPS5571172A true JPS5571172A (en) 1980-05-29

Family

ID=15335431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14329678A Pending JPS5571172A (en) 1978-11-22 1978-11-22 Direct current power source circuit

Country Status (1)

Country Link
JP (1) JPS5571172A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008125236A (en) * 2006-11-10 2008-05-29 Sanyo Electric Co Ltd Power supply device for vehicles equipped with overcharge/overdischarge detection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008125236A (en) * 2006-11-10 2008-05-29 Sanyo Electric Co Ltd Power supply device for vehicles equipped with overcharge/overdischarge detection circuit

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