JPS5781625A - Power source control circuit - Google Patents

Power source control circuit

Info

Publication number
JPS5781625A
JPS5781625A JP15707680A JP15707680A JPS5781625A JP S5781625 A JPS5781625 A JP S5781625A JP 15707680 A JP15707680 A JP 15707680A JP 15707680 A JP15707680 A JP 15707680A JP S5781625 A JPS5781625 A JP S5781625A
Authority
JP
Japan
Prior art keywords
power source
voltage
photocoupler
solid relay
control circuit
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
JP15707680A
Other languages
Japanese (ja)
Inventor
Mutsumi Iida
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 JP15707680A priority Critical patent/JPS5781625A/en
Publication of JPS5781625A publication Critical patent/JPS5781625A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/257—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Abstract

PURPOSE:To make a DC power source unnecessary to simplify the circuit constitution, by subjecting an AC voltage, which is obtained by shifting the phase of the AC power source voltage at 90 deg., to full-wave rectification and by using this rectified voltage as the control input of a solid relay. CONSTITUTION:A load 12 is connected to an AC power source 1 through a solid relay 5 consisting of a photocoupler 6, a zero cross circuit 7 and a TRIAC8. The control input of the solid relay 5 is obtained through a diode bridge 4 from both ends of a resistance 9 connected in series to a capacitor 10. When a switch 3 is turned on, an AC voltage which has a phase advancing more than that of the AC power source 1 by 90 deg. is generated at both ends of the resistance 9 and is subjected to full-wave rectification and is applied to the photo-coupler 6. The photocoupler emits the light with a maximum brightness when the momentary value of the AC power source 1 becomes 0, and at this time, the photocoupler 6 triggers the TRIAC8.
JP15707680A 1980-11-10 1980-11-10 Power source control circuit Pending JPS5781625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15707680A JPS5781625A (en) 1980-11-10 1980-11-10 Power source control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15707680A JPS5781625A (en) 1980-11-10 1980-11-10 Power source control circuit

Publications (1)

Publication Number Publication Date
JPS5781625A true JPS5781625A (en) 1982-05-21

Family

ID=15641710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15707680A Pending JPS5781625A (en) 1980-11-10 1980-11-10 Power source control circuit

Country Status (1)

Country Link
JP (1) JPS5781625A (en)

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