JPS6419964A - Switching power circuit - Google Patents
Switching power circuitInfo
- 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
Links
Landscapes
- 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.
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) |
-
1987
- 1987-07-10 JP JP17231487A patent/JPH0667185B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0667185B2 (en) | 1994-08-24 |
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