JPH04165410A - Direct-current power unit - Google Patents

Direct-current power unit

Info

Publication number
JPH04165410A
JPH04165410A JP29233090A JP29233090A JPH04165410A JP H04165410 A JPH04165410 A JP H04165410A JP 29233090 A JP29233090 A JP 29233090A JP 29233090 A JP29233090 A JP 29233090A JP H04165410 A JPH04165410 A JP H04165410A
Authority
JP
Japan
Prior art keywords
voltage
generating circuit
input
resistances
variation
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
JP29233090A
Other languages
Japanese (ja)
Inventor
Toyohiro Iwao
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP29233090A priority Critical patent/JPH04165410A/en
Publication of JPH04165410A publication Critical patent/JPH04165410A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To stably output a voltage by varying the output voltage of a reference voltage generating circuit by detecting and amplifying variation in the input voltage through resistance division, etc.
CONSTITUTION: The reference voltage generating circuit 6 is equipped with a detecting circuit part which divides a DC voltage inputted from a voltage input terminal 1 through resistances 9 and 10 to detect the input voltage variation, a voltage generating circuit part which generates a constant voltage while resistances 11 and 12 and a constant voltage diode 13 are connected in series, and an amplifying circuit part consisting of a transistor (TR) 14 for amplification and a resistance 15. In such a case, when the input DC voltage rises, the base voltage of the TR 14 rises to increase the current flowing through the resistance 11, whose voltage drops increases to reduce the voltage variation at the connection point between the resistances 11 and 12; and then the voltage supplied to the constant voltage diode 13 becomes stable and the output voltage (reference voltage Vb) of the voltage generating circuit 6 becomes stable. Consequently, the voltage generating circuit 2 can generates the stable DC voltage.
COPYRIGHT: (C)1992,JPO&Japio
JP29233090A 1990-10-29 1990-10-29 Direct-current power unit Pending JPH04165410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29233090A JPH04165410A (en) 1990-10-29 1990-10-29 Direct-current power unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29233090A JPH04165410A (en) 1990-10-29 1990-10-29 Direct-current power unit

Publications (1)

Publication Number Publication Date
JPH04165410A true JPH04165410A (en) 1992-06-11

Family

ID=17780394

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29233090A Pending JPH04165410A (en) 1990-10-29 1990-10-29 Direct-current power unit

Country Status (1)

Country Link
JP (1) JPH04165410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018101449A (en) * 2018-03-29 2018-06-28 ローム株式会社 Constant voltage generation circuit
US10379564B2 (en) 2015-02-02 2019-08-13 Rohm Co., Ltd. Constant voltage generating circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10379564B2 (en) 2015-02-02 2019-08-13 Rohm Co., Ltd. Constant voltage generating circuit
JP2018101449A (en) * 2018-03-29 2018-06-28 ローム株式会社 Constant voltage generation circuit

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