JPS5558775A - Power supply device - Google Patents

Power supply device

Info

Publication number
JPS5558775A
JPS5558775A JP13193578A JP13193578A JPS5558775A JP S5558775 A JPS5558775 A JP S5558775A JP 13193578 A JP13193578 A JP 13193578A JP 13193578 A JP13193578 A JP 13193578A JP S5558775 A JPS5558775 A JP S5558775A
Authority
JP
Japan
Prior art keywords
power
loads
operational amplifier
voltage
positive
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
JP13193578A
Other languages
Japanese (ja)
Inventor
Yasukazu Ushiyama
Setsuo Yamamoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP13193578A priority Critical patent/JPS5558775A/en
Publication of JPS5558775A publication Critical patent/JPS5558775A/en
Pending legal-status Critical Current

Links

Landscapes

  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

PURPOSE: To efficiently produce economic power, by dividing the voltage of single DC power to generate apparently two positive and negative voltages.
CONSTITUTION: The voltage of single DC power E is divided by resistors R1, R2. The point between the resistors is connected to the positive terminal of an operational amplifier IC. The common emitter of transistors TR1, TR2 of different type is connected to loads RL1, RL2 and the negative terminal of the operational amplifier. When the loads RL1, RL2 are equal to each other, no current flows between connection points M, N. When the load RL1 is larger than the other RL2, the operational amplifier generates a positive voltage. At that time, the transistor TR1 is turned on, the other TR2 is turned off and equal voltages are applied to the loads. Apparently two DC power outputs can thus be efficiently and economically obtained from single DC power through a small number of parts.
COPYRIGHT: (C)1980,JPO&Japio
JP13193578A 1978-10-25 1978-10-25 Power supply device Pending JPS5558775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13193578A JPS5558775A (en) 1978-10-25 1978-10-25 Power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13193578A JPS5558775A (en) 1978-10-25 1978-10-25 Power supply device

Publications (1)

Publication Number Publication Date
JPS5558775A true JPS5558775A (en) 1980-05-01

Family

ID=15069643

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13193578A Pending JPS5558775A (en) 1978-10-25 1978-10-25 Power supply device

Country Status (1)

Country Link
JP (1) JPS5558775A (en)

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