JPS6419964A - Switching power circuit - Google Patents

Switching power circuit

Info

Publication number
JPS6419964A
JPS6419964A JP17231487A JP17231487A JPS6419964A JP S6419964 A JPS6419964 A JP S6419964A JP 17231487 A JP17231487 A JP 17231487A JP 17231487 A JP17231487 A JP 17231487A JP S6419964 A JPS6419964 A JP S6419964A
Authority
JP
Japan
Prior art keywords
circuit
switching power
inversion
stepup
type 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.)
Granted
Application number
JP17231487A
Other languages
Japanese (ja)
Other versions
JPH0667185B2 (en
Inventor
Yasuo Kawaguchi
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP17231487A priority Critical patent/JPH0667185B2/en
Publication of JPS6419964A publication Critical patent/JPS6419964A/en
Publication of JPH0667185B2 publication Critical patent/JPH0667185B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Dc-Dc Converters (AREA)

Abstract

PURPOSE:To decrease the number of parts, and to miniaturize a switching power circuit by respectively connecting inversion-positive outputs from one pulse generator to an inversion type circuit and a stepup type circuit and mounting a stepdown circuit to an input to the stepup type circuit. CONSTITUTION:An inversion type circuit 1 for a switching power circuit is composed of a P-N-P transistor (Tr) 5, resistors 6-7, a choke transformer 9, a rectifier diode 10 and a filter capacitor 11, and a stepup type circuit 2 is also constituted of a Tr 18, etc. The Trs 5, 18 for each circuit are connected so that the Tr 5 is supplied with an inversion output Q and the Tr 18 with a positive output Q from one pulse generator 22 as pulses applied to bases for the Trs 5, 18 at that time. A stepdown circuit 3 consisting of a diode 13 and a capacitor 14 is inserted between the plus side and the minus side of an input power 4. Accordingly, pulse generators can be decreased to one in number, thus miniaturizing the switching power circuit, then stably generating multiple outputs.
JP17231487A 1987-07-10 1987-07-10 Switching power supply circuit Expired - Lifetime JPH0667185B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17231487A JPH0667185B2 (en) 1987-07-10 1987-07-10 Switching power supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17231487A JPH0667185B2 (en) 1987-07-10 1987-07-10 Switching power supply circuit

Publications (2)

Publication Number Publication Date
JPS6419964A true JPS6419964A (en) 1989-01-24
JPH0667185B2 JPH0667185B2 (en) 1994-08-24

Family

ID=15939617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17231487A Expired - Lifetime JPH0667185B2 (en) 1987-07-10 1987-07-10 Switching power supply circuit

Country Status (1)

Country Link
JP (1) JPH0667185B2 (en)

Also Published As

Publication number Publication date
JPH0667185B2 (en) 1994-08-24

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