JPS5475525A - Electric source device - Google Patents

Electric source device

Info

Publication number
JPS5475525A
JPS5475525A JP14274677A JP14274677A JPS5475525A JP S5475525 A JPS5475525 A JP S5475525A JP 14274677 A JP14274677 A JP 14274677A JP 14274677 A JP14274677 A JP 14274677A JP S5475525 A JPS5475525 A JP S5475525A
Authority
JP
Japan
Prior art keywords
control
electric source
array
output
pla8
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
JP14274677A
Other languages
Japanese (ja)
Inventor
Toshiyuki Nakao
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 JP14274677A priority Critical patent/JPS5475525A/en
Publication of JPS5475525A publication Critical patent/JPS5475525A/en
Pending legal-status Critical Current

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  • Dc-Dc Converters (AREA)

Abstract

PURPOSE: To enable to do constant voltage control of multichannel in a unit control circuit, by doing control of an electric source in switching constant voltage system with A/D converter and a programable logic array.
CONSTITUTION: Control part of switching control type electric source is composed of a comparator 17 and programable logic array PLA8, signal in which DC output voltage is made to be digital by A/D converter and a specified voltage value are comparated by the comparator 17, differential signal 19 of 2 bits is output, this is input to PLA8 which is composed of a decorder 9, AND array 10, OR array 11 and flip-flop 12 and is operated by synchronous clock 14. Forming such that differential signal 19 is effective only when pulse 20 for sampling is true, the control part can be simplified, and at the same time, various voltage output can be controlled by only PLA.
COPYRIGHT: (C)1979,JPO&Japio
JP14274677A 1977-11-30 1977-11-30 Electric source device Pending JPS5475525A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14274677A JPS5475525A (en) 1977-11-30 1977-11-30 Electric source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14274677A JPS5475525A (en) 1977-11-30 1977-11-30 Electric source device

Publications (1)

Publication Number Publication Date
JPS5475525A true JPS5475525A (en) 1979-06-16

Family

ID=15322604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14274677A Pending JPS5475525A (en) 1977-11-30 1977-11-30 Electric source device

Country Status (1)

Country Link
JP (1) JPS5475525A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176744A (en) * 1981-04-22 1982-10-30 Nec Corp Semiconductor device
JPS63220764A (en) * 1987-03-09 1988-09-14 Mitsubishi Electric Corp Controller for chopper
US6118232A (en) * 1997-06-02 2000-09-12 Nec Corporation Circuit for compensating deflection in a display unit without picture distortion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57176744A (en) * 1981-04-22 1982-10-30 Nec Corp Semiconductor device
JPS6329827B2 (en) * 1981-04-22 1988-06-15 Nippon Electric Co
JPS63220764A (en) * 1987-03-09 1988-09-14 Mitsubishi Electric Corp Controller for chopper
US6118232A (en) * 1997-06-02 2000-09-12 Nec Corporation Circuit for compensating deflection in a display unit without picture distortion

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