JPS6447224A - Capacitor charger - Google Patents

Capacitor charger

Info

Publication number
JPS6447224A
JPS6447224A JP62203799A JP20379987A JPS6447224A JP S6447224 A JPS6447224 A JP S6447224A JP 62203799 A JP62203799 A JP 62203799A JP 20379987 A JP20379987 A JP 20379987A JP S6447224 A JPS6447224 A JP S6447224A
Authority
JP
Japan
Prior art keywords
transformer
capacitor
transistor
signal
charging
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
JP62203799A
Other languages
Japanese (ja)
Inventor
Yasushi Suzuki
Yoichi Murakami
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62203799A priority Critical patent/JPS6447224A/en
Publication of JPS6447224A publication Critical patent/JPS6447224A/en
Pending legal-status Critical Current

Links

Landscapes

  • Direct Current Feeding And Distribution (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To make constant the interval during which charging current flows through the secondary of a transformer, by varying the primary input voltage of transformer in a charging circuit in proportion to the terminal voltage of a charging capacitor. CONSTITUTION:A signal is produced from a synchronizing circuit 7 in synchronization with an external synchronization signal in order to switch a switching transistor 3 through a drive circuit 2. The transistor 3 is connected in series with the primary of a transformer 4 so as to charge a capacitor 6 connected through a diode 5 to the secondary. Terminal voltage of the capacitor 6 is inputted to an operational amplifier 10 to control a transistor 9 connected between the transformer 4 and a power source so as to vary the primary input voltage. Consequently, noise is produced only during blanking internal of a horizontal synchronizing signal in a television set.
JP62203799A 1987-08-17 1987-08-17 Capacitor charger Pending JPS6447224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203799A JPS6447224A (en) 1987-08-17 1987-08-17 Capacitor charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203799A JPS6447224A (en) 1987-08-17 1987-08-17 Capacitor charger

Publications (1)

Publication Number Publication Date
JPS6447224A true JPS6447224A (en) 1989-02-21

Family

ID=16479932

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203799A Pending JPS6447224A (en) 1987-08-17 1987-08-17 Capacitor charger

Country Status (1)

Country Link
JP (1) JPS6447224A (en)

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