JPS5685121A - Spark discharge power supply device - Google Patents

Spark discharge power supply device

Info

Publication number
JPS5685121A
JPS5685121A JP16228879A JP16228879A JPS5685121A JP S5685121 A JPS5685121 A JP S5685121A JP 16228879 A JP16228879 A JP 16228879A JP 16228879 A JP16228879 A JP 16228879A JP S5685121 A JPS5685121 A JP S5685121A
Authority
JP
Japan
Prior art keywords
set value
charging
terminal
charge voltage
boosting transformer
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
JP16228879A
Other languages
Japanese (ja)
Inventor
Kiyoshi Sone
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP16228879A priority Critical patent/JPS5685121A/en
Publication of JPS5685121A publication Critical patent/JPS5685121A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To reduce the load of a boosting transformer to realize a small size of the device, by connecting a capacitor via a rectifier between the output terminal and the intermediate terminal of the secondary winding of the boosting transformer and then giving an on/off control to the charging circuit in accordance with the charging voltage.
CONSTITUTION: The capacitors 131 and 132 are connected between the intermediate terminal and the terminal of the secondary winding of the boosting transformer 10 with the primary winding connected to the AC power source and via the diodes 111 and 112 plus the switching transistors 121 and 122. The output of the transformer 10 is delivered to the xenon discharge tube 15 via the reactor 14. The charge voltage of the capacitors 131 and 132 each is detected from the connection point of the serial circuit consisting of the resistances 211 and 212 and then compared with the set value 23 via the comparator 22. And in case the charge voltage is lower than the set value, the light emission is stopped for the diodes 191 and 192. Then the transistors 121 and 122 conduct to charge the capacitor. While the charging is stopped when the charge voltage is higher than the set value.
COPYRIGHT: (C)1981,JPO&Japio
JP16228879A 1979-12-14 1979-12-14 Spark discharge power supply device Pending JPS5685121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16228879A JPS5685121A (en) 1979-12-14 1979-12-14 Spark discharge power supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16228879A JPS5685121A (en) 1979-12-14 1979-12-14 Spark discharge power supply device

Publications (1)

Publication Number Publication Date
JPS5685121A true JPS5685121A (en) 1981-07-11

Family

ID=15751630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16228879A Pending JPS5685121A (en) 1979-12-14 1979-12-14 Spark discharge power supply device

Country Status (1)

Country Link
JP (1) JPS5685121A (en)

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