JPS57186983A - Overcharging preventing circuit - Google Patents

Overcharging preventing circuit

Info

Publication number
JPS57186983A
JPS57186983A JP56071698A JP7169881A JPS57186983A JP S57186983 A JPS57186983 A JP S57186983A JP 56071698 A JP56071698 A JP 56071698A JP 7169881 A JP7169881 A JP 7169881A JP S57186983 A JPS57186983 A JP S57186983A
Authority
JP
Japan
Prior art keywords
capacitor
triac
overcharging
charging voltage
voltage
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
JP56071698A
Other languages
Japanese (ja)
Inventor
Shuichi Takayama
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.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical 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 Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP56071698A priority Critical patent/JPS57186983A/en
Publication of JPS57186983A publication Critical patent/JPS57186983A/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H02M7/10—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Rectifiers (AREA)

Abstract

PURPOSE:To prevent overcharging of a main capacitor for a flash discharge tube, by a method wherein the capacitor is released from a voltage multiplying rectifier in response to charging voltage of the capacitor beyond a prescribed value. CONSTITUTION:AC power source 11 is turned on and phase control of a triac 12 is carried out, and output of the triac 12 passes through a voltage multiplying rectifier 14 and charges a capacitor 21 for a flash discharge lamp. If a triac control circuit 25 gets out of order on account of any reason and the triac 12 is set to the full conductive state, the charging voltage of the capacitor 21 becomes large. If the charging voltage attains a prescribed value, a Zener diode 20 is made conductive and a relay 19 is operated to inhibit charging of capacitors 18a, 18b hence the capacitor 21, thereby overcharging is prevented.
JP56071698A 1981-05-13 1981-05-13 Overcharging preventing circuit Pending JPS57186983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56071698A JPS57186983A (en) 1981-05-13 1981-05-13 Overcharging preventing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56071698A JPS57186983A (en) 1981-05-13 1981-05-13 Overcharging preventing circuit

Publications (1)

Publication Number Publication Date
JPS57186983A true JPS57186983A (en) 1982-11-17

Family

ID=13468016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56071698A Pending JPS57186983A (en) 1981-05-13 1981-05-13 Overcharging preventing circuit

Country Status (1)

Country Link
JP (1) JPS57186983A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63187541U (en) * 1987-05-26 1988-12-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63187541U (en) * 1987-05-26 1988-12-01

Similar Documents

Publication Publication Date Title
US4270058A (en) Power supply and control circuit for series connected controller
US4422016A (en) Constant energy transfer rate strobe source
SE7906084L (en) Voltage regulated magnetic ignition device
JPS57186983A (en) Overcharging preventing circuit
US3629673A (en) Direct current convertor for dc supply with extinguishing circuit
GB1183542A (en) Improvements in or relating to circuit arrangements for starting and operating electric discharge lamps from alternating current supplies
EP0011410B1 (en) Electronic starter circuits for discharge lamps
US3922584A (en) Arc lamp ignition and operating circuit
JPS54126546A (en) Fixing apparatus
JPS576916A (en) Power supply device
KR790001901Y1 (en) Switch circuit for power saving
JPS648355A (en) Capacitive discharge ignition system of voltage regulating magnetogenerator power
JPS54119626A (en) Rush current limiting circuit for power source
JPS5768684A (en) Controller for speed of direct current shunt motor
JPS5544632A (en) Alternating current power control unit
JPS5553182A (en) Starting circuit for switching-mode power-supply circuit
JPS5496272A (en) Discharge lamp lighting circuit
JPS56166798A (en) Automatic voltage regulator
JPS5457648A (en) Power control circuit
JPS5460775A (en) Discharge lamp lighting device
JPS56104000A (en) Automatic voltage regulator for self-exciting generator
JPS5685121A (en) Spark discharge power supply device
JPS5710821A (en) Constant voltage power supply circuit
JPS56153970A (en) Electronic switching circuit
JPS5471318A (en) Motor brake power supply