JPS567116A - Serial control type constant voltage power unit - Google Patents

Serial control type constant voltage power unit

Info

Publication number
JPS567116A
JPS567116A JP8108079A JP8108079A JPS567116A JP S567116 A JPS567116 A JP S567116A JP 8108079 A JP8108079 A JP 8108079A JP 8108079 A JP8108079 A JP 8108079A JP S567116 A JPS567116 A JP S567116A
Authority
JP
Japan
Prior art keywords
constant voltage
power unit
voltage power
control type
serial control
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
JP8108079A
Other languages
Japanese (ja)
Inventor
Toshiaki Suzuki
Hideo Kaneoka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP8108079A priority Critical patent/JPS567116A/en
Publication of JPS567116A publication Critical patent/JPS567116A/en
Pending legal-status Critical Current

Links

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

Abstract

PURPOSE: To increase the efficiency by adding another constant voltage power unit to the serial control type constant voltage power unit the power efficiency is not so good.
CONSTITUTION: The collector current of amplifying transistor 2 included in constant voltage power unit 11 is connected to constant voltage power unit 12 for low power use. At unit 11, the collector of transistor 2 is led outside to obtain two types of output voltage at output terminals 10 and 15 each. In such way, the collector current of transistor 2 which is not used yet, i.e. the astable collector voltage is stabilized through the constant voltage circuit to be utilized for part of the power source for the communication apparatus. As a result, the overall efficiency can be increased for the power unit.
COPYRIGHT: (C)1981,JPO&Japio
JP8108079A 1979-06-27 1979-06-27 Serial control type constant voltage power unit Pending JPS567116A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8108079A JPS567116A (en) 1979-06-27 1979-06-27 Serial control type constant voltage power unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8108079A JPS567116A (en) 1979-06-27 1979-06-27 Serial control type constant voltage power unit

Publications (1)

Publication Number Publication Date
JPS567116A true JPS567116A (en) 1981-01-24

Family

ID=13736403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8108079A Pending JPS567116A (en) 1979-06-27 1979-06-27 Serial control type constant voltage power unit

Country Status (1)

Country Link
JP (1) JPS567116A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587476A (en) * 1983-09-29 1986-05-06 The Boeing Company High voltage temperature compensated foldback circuit
JPH0520111U (en) * 1991-08-21 1993-03-12 ミツミ電機株式会社 Power circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587476A (en) * 1983-09-29 1986-05-06 The Boeing Company High voltage temperature compensated foldback circuit
JPH0520111U (en) * 1991-08-21 1993-03-12 ミツミ電機株式会社 Power circuit

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