JPS5761979A - Regulated power source circuit - Google Patents

Regulated power source circuit

Info

Publication number
JPS5761979A
JPS5761979A JP13587080A JP13587080A JPS5761979A JP S5761979 A JPS5761979 A JP S5761979A JP 13587080 A JP13587080 A JP 13587080A JP 13587080 A JP13587080 A JP 13587080A JP S5761979 A JPS5761979 A JP S5761979A
Authority
JP
Japan
Prior art keywords
circuit
voltage
capacitors
turned
power source
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.)
Granted
Application number
JP13587080A
Other languages
Japanese (ja)
Other versions
JPH031907B2 (en
Inventor
Osamu Yamashiro
Toyohiko Hongo
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 JP13587080A priority Critical patent/JPS5761979A/en
Publication of JPS5761979A publication Critical patent/JPS5761979A/en
Publication of JPH031907B2 publication Critical patent/JPH031907B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
    • G04G19/02—Conversion or regulation of current or voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Control Of Electrical Variables (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To obtain a regulated power source circuit with the low power consumption, by securing the constant voltage for the circuit after lowering the battery voltage via a pair of capacitors which are controlled for their states of series connection via a switching MISFET. CONSTITUTION:When switching MISFETQ1 and Q3 of a voltage reduction circuit 1 are turned on, capacitors C1 and C2 are connected in series to a battery power source Vss of lithium cell, etc. to be charged and controlled by different timing pulses. Then switching MISFETQ2 and Q4 which are not turned on simultaneously with the FETQ1 and thus free from the increase of the power loss are turned on. The capacitors C1 and C2 are connected in series with no intrevention of the source Vss to be discharged. The capacitance of these capacitors is set equal to each other, and thus the output voltage of the circuit 1 is reduced down almost to a half of the voltage of the source Vss and then turned into a constant level by a voltage regulating circuit 2 containing a reference voltage circuit 21, a differential amplifying circuit 20, etc. In such way, a regulated power source circuit with the low power consumption is obtained to be suited best to an electronic watch, etc.
JP13587080A 1980-10-01 1980-10-01 Regulated power source circuit Granted JPS5761979A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13587080A JPS5761979A (en) 1980-10-01 1980-10-01 Regulated power source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13587080A JPS5761979A (en) 1980-10-01 1980-10-01 Regulated power source circuit

Publications (2)

Publication Number Publication Date
JPS5761979A true JPS5761979A (en) 1982-04-14
JPH031907B2 JPH031907B2 (en) 1991-01-11

Family

ID=15161688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13587080A Granted JPS5761979A (en) 1980-10-01 1980-10-01 Regulated power source circuit

Country Status (1)

Country Link
JP (1) JPS5761979A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557890A (en) * 1978-06-05 1980-04-30 Sanyo Electric Co Voltage step down circuit
JPS5559870A (en) * 1978-10-30 1980-05-06 Takahashi Eng Kk Fluid pressure cylinder for generaitng vibration

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5557890A (en) * 1978-06-05 1980-04-30 Sanyo Electric Co Voltage step down circuit
JPS5559870A (en) * 1978-10-30 1980-05-06 Takahashi Eng Kk Fluid pressure cylinder for generaitng vibration

Also Published As

Publication number Publication date
JPH031907B2 (en) 1991-01-11

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