JPS564815A - Electric power supply circuit - Google Patents

Electric power supply circuit

Info

Publication number
JPS564815A
JPS564815A JP7813479A JP7813479A JPS564815A JP S564815 A JPS564815 A JP S564815A JP 7813479 A JP7813479 A JP 7813479A JP 7813479 A JP7813479 A JP 7813479A JP S564815 A JPS564815 A JP S564815A
Authority
JP
Japan
Prior art keywords
voltage
power supply
supply circuit
constant
reference voltage
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
JP7813479A
Other languages
Japanese (ja)
Inventor
Minoru Machida
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP7813479A priority Critical patent/JPS564815A/en
Publication of JPS564815A publication Critical patent/JPS564815A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To obtain a plurality of constant voltage outputs different in the voltage value by means of a series of power supply circuit, by providing a plurality of reference voltage generating circuits to one constant voltage control transistor and suitably changing the reference voltage from the selection.
CONSTITUTION: A plurality of Zener diodes ZDAWZDC are connected between the base of the voltage control transistor (TR)1 of the variable constant voltage control circuit 2 and ground, and TR2WTR4 are provided so that the respective Zener diodes ZDAWZDB can be grounded with the control signal. Further, TR2WTR4 are suitably ON or OFF with the voltage selection signals TAWTC from control the circuit CU, allowing to change the reference voltage and the constant voltae output.
COPYRIGHT: (C)1981,JPO&Japio
JP7813479A 1979-06-22 1979-06-22 Electric power supply circuit Pending JPS564815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7813479A JPS564815A (en) 1979-06-22 1979-06-22 Electric power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7813479A JPS564815A (en) 1979-06-22 1979-06-22 Electric power supply circuit

Publications (1)

Publication Number Publication Date
JPS564815A true JPS564815A (en) 1981-01-19

Family

ID=13653399

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7813479A Pending JPS564815A (en) 1979-06-22 1979-06-22 Electric power supply circuit

Country Status (1)

Country Link
JP (1) JPS564815A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140528A (en) * 1983-01-31 1984-08-11 Canon Inc Feeding system
US4747012A (en) * 1986-01-10 1988-05-24 Murata Manufacturing Co., Ltd. Apparatus for supplying high and medium output voltages with a single transformer, having switchably variable feedback means for controlling the input current to the transformer
JP2006293492A (en) * 2005-04-06 2006-10-26 Denso Corp Power unit
JP2014206803A (en) * 2013-04-11 2014-10-30 ソニー株式会社 Power supply circuit, power supply system, and electric storage device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59140528A (en) * 1983-01-31 1984-08-11 Canon Inc Feeding system
US4747012A (en) * 1986-01-10 1988-05-24 Murata Manufacturing Co., Ltd. Apparatus for supplying high and medium output voltages with a single transformer, having switchably variable feedback means for controlling the input current to the transformer
JP2006293492A (en) * 2005-04-06 2006-10-26 Denso Corp Power unit
JP4710386B2 (en) * 2005-04-06 2011-06-29 株式会社デンソー Power supply
JP2014206803A (en) * 2013-04-11 2014-10-30 ソニー株式会社 Power supply circuit, power supply system, and electric storage device

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