JPS5633716A - Switching regulator - Google Patents
Switching regulatorInfo
- Publication number
- JPS5633716A JPS5633716A JP10767679A JP10767679A JPS5633716A JP S5633716 A JPS5633716 A JP S5633716A JP 10767679 A JP10767679 A JP 10767679A JP 10767679 A JP10767679 A JP 10767679A JP S5633716 A JPS5633716 A JP S5633716A
- Authority
- JP
- Japan
- Prior art keywords
- current
- transformer
- winding
- transistor
- decided
- 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
Links
Landscapes
- Dc-Dc Converters (AREA)
Abstract
PURPOSE: To improve the switching characteristics of the switching transistor, by providing a serial circuit of the control transistor and the current transformer between the main transistor and the reactor.
CONSTITUTION: A serial circuit of the control TR10 and the winding M2 of the current transformer 11 is inserted between the base of the main transistor TR5 and the output side of the smoothing reactor 6, and the compound current of the TRS5 and 10 is flowed to the winding M1 connected to the winding M2. The winding ratio M1/M2 is decided by the current amplification factor of the TR5. The absolute value of the number of turns of the M2 is decided so as to withstand sufficiently the upper and lower time areas A and B shown by the oblique lines and so that the saturation may be avoided for the iron core of the current transformer 11. In this constitution, a certain ratio is secured between the pass current IQ and the base current Ib of the TR5. Then the current Ib is extinguished with the turn-off of the TR10, and the current equivalent to the Ib circulates in the form of the diode current Ib1. And the application voltage of the transformer 11 is inverted at this time point tb. Then the transformer 11 works also as a transformer, and the voltage is generated at the winding 3 provided separately to be supplied to the TR10. Thus the breaking characteristics of the TR5 can be enhanced preatly.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10767679A JPS5633716A (en) | 1979-08-25 | 1979-08-25 | Switching regulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10767679A JPS5633716A (en) | 1979-08-25 | 1979-08-25 | Switching regulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5633716A true JPS5633716A (en) | 1981-04-04 |
Family
ID=14465155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10767679A Pending JPS5633716A (en) | 1979-08-25 | 1979-08-25 | Switching regulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633716A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58141294U (en) * | 1982-03-19 | 1983-09-22 | ヤマハ株式会社 | damper mechanism for piano |
-
1979
- 1979-08-25 JP JP10767679A patent/JPS5633716A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58141294U (en) * | 1982-03-19 | 1983-09-22 | ヤマハ株式会社 | damper mechanism for piano |
JPS6323752Y2 (en) * | 1982-03-19 | 1988-06-29 |
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