JPS6489962A - Power circuit - Google Patents

Power circuit

Info

Publication number
JPS6489962A
JPS6489962A JP62242546A JP24254687A JPS6489962A JP S6489962 A JPS6489962 A JP S6489962A JP 62242546 A JP62242546 A JP 62242546A JP 24254687 A JP24254687 A JP 24254687A JP S6489962 A JPS6489962 A JP S6489962A
Authority
JP
Japan
Prior art keywords
section
pwm controlling
circuit section
auxiliary discharge
discharge 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
JP62242546A
Other languages
Japanese (ja)
Inventor
Takao Miyazaki
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 JP62242546A priority Critical patent/JPS6489962A/en
Publication of JPS6489962A publication Critical patent/JPS6489962A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Receiver Circuits (AREA)
  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To prevent undesired noise from being generated, by providing a PWM controlling section with an auxiliary discharge circuit section, and by setting conditions for this properly. CONSTITUTION:By a power circuit, input voltage from an input side IN is applied to a rectifier circuit section 13 via a transformer TR, and also to a PWM controlling section 11 for pulse width modulation. The output side OUT of the rectifier circuit section 13 is provided with a compared voltage detecting section 14, and the output section is connected to the PWM controlling section 11. Besides, between the transformer TR and the PWM controlling section 11, a switch circuit section 12 is set. On the PWM controlling section 11, a resistor R1 and a capacitor C1 for controlling the oscillatory frequency are additionally arranged, and an auxiliary discharge circuit section 15 is set. Besides, to the base of a transistor Q, a condition setting section 16 is connected. Then, by setting conditions for the auxiliary discharge circuit section 15 properly, the oscillatory frequency can be regulated.
JP62242546A 1987-09-29 1987-09-29 Power circuit Pending JPS6489962A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62242546A JPS6489962A (en) 1987-09-29 1987-09-29 Power circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62242546A JPS6489962A (en) 1987-09-29 1987-09-29 Power circuit

Publications (1)

Publication Number Publication Date
JPS6489962A true JPS6489962A (en) 1989-04-05

Family

ID=17090714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62242546A Pending JPS6489962A (en) 1987-09-29 1987-09-29 Power circuit

Country Status (1)

Country Link
JP (1) JPS6489962A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129573A (en) * 1983-01-14 1984-07-25 Hitachi Metals Ltd Dc/dc converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59129573A (en) * 1983-01-14 1984-07-25 Hitachi Metals Ltd Dc/dc converter

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