JPS5523538A - Constant-voltage generator circuit - Google Patents

Constant-voltage generator circuit

Info

Publication number
JPS5523538A
JPS5523538A JP9527678A JP9527678A JPS5523538A JP S5523538 A JPS5523538 A JP S5523538A JP 9527678 A JP9527678 A JP 9527678A JP 9527678 A JP9527678 A JP 9527678A JP S5523538 A JPS5523538 A JP S5523538A
Authority
JP
Japan
Prior art keywords
constant
generator circuit
voltage generator
comparator
output
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
JP9527678A
Other languages
Japanese (ja)
Inventor
Junichi Tabata
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments 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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP9527678A priority Critical patent/JPS5523538A/en
Publication of JPS5523538A publication Critical patent/JPS5523538A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To make it possible to select arbitrarily a constant-voltage level by using a CMOS as the load current supplying element of a constant-voltage generator circuit.
CONSTITUTION: Resistance 1 has one end and the other end connected to plus side VDD of the secondary battery and output terminal A respectively. Enhancement N channel MOSFET 2 has the gate and the drain connected to A and the source grounded. The output of reference voltage generator circuit 8 constituted in this manner is connected to one input terminal of voltage comparison circuit (comparator) 9. The output of comparator 9 is connected to the gate of load current supplying MOSFET 10. This FET 10 has the source and the drain connected to the plus VDD side of the secondary battery and E respectively. One end and the other end of capacitor 13 formed in the IC are connected to E and F respectively. Capacitor 13 formed in the IC has one end connected to F and the other end grounded. Then, F is connected to the other input terminal of comparator 9, and load 11 is connected between E and the earth.
COPYRIGHT: (C)1980,JPO&Japio
JP9527678A 1978-08-04 1978-08-04 Constant-voltage generator circuit Pending JPS5523538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9527678A JPS5523538A (en) 1978-08-04 1978-08-04 Constant-voltage generator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9527678A JPS5523538A (en) 1978-08-04 1978-08-04 Constant-voltage generator circuit

Publications (1)

Publication Number Publication Date
JPS5523538A true JPS5523538A (en) 1980-02-20

Family

ID=14133241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9527678A Pending JPS5523538A (en) 1978-08-04 1978-08-04 Constant-voltage generator circuit

Country Status (1)

Country Link
JP (1) JPS5523538A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110217A (en) * 1984-11-05 1986-05-28 Nec Ic Microcomput Syst Ltd Constant-voltage circuit
JPH03124220U (en) * 1990-03-29 1991-12-17

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4863257A (en) * 1971-12-02 1973-09-03
JPS52123101A (en) * 1976-04-08 1977-10-17 Fujitsu Ltd Power source circuit for mosic

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4863257A (en) * 1971-12-02 1973-09-03
JPS52123101A (en) * 1976-04-08 1977-10-17 Fujitsu Ltd Power source circuit for mosic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61110217A (en) * 1984-11-05 1986-05-28 Nec Ic Microcomput Syst Ltd Constant-voltage circuit
JPH03124220U (en) * 1990-03-29 1991-12-17

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