JPS55127621A - Series constant-voltage circuit - Google Patents
Series constant-voltage circuitInfo
- Publication number
- JPS55127621A JPS55127621A JP3747679A JP3747679A JPS55127621A JP S55127621 A JPS55127621 A JP S55127621A JP 3747679 A JP3747679 A JP 3747679A JP 3747679 A JP3747679 A JP 3747679A JP S55127621 A JPS55127621 A JP S55127621A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- series
- transistor
- control
- rising
- 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
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
PURPOSE: To increase the rising and falling speeds of an output voltage by turning off a series transistor while the 1st control transistor is OFF and then by putting the series transistor into normal operation with the 1st control transistor ON.
CONSTITUTION: In a series constant-voltage circuit which outputs a voltage rising and falling rapidly, a direct voltage rectified by rectifier 2 and smoothed by smoothing capacitor 3 is applied across load 9 through series transistor Tr4 being controlled to the 1st value by reference voltage element 5. Here, control Tr13 comes into operation when the rectified and smoothed direct voltage exceeds the 2nd value determined by reference voltage element 11. Then, control Tr16 is provided which turns Tr4 OFF with Tr13 OFF and ON with Tr13 ON. Consequently, the rising and falling speeds of the output voltage can be increased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3747679A JPS55127621A (en) | 1979-03-26 | 1979-03-26 | Series constant-voltage circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3747679A JPS55127621A (en) | 1979-03-26 | 1979-03-26 | Series constant-voltage circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55127621A true JPS55127621A (en) | 1980-10-02 |
Family
ID=12498565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3747679A Pending JPS55127621A (en) | 1979-03-26 | 1979-03-26 | Series constant-voltage circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55127621A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5812026A (en) * | 1981-07-15 | 1983-01-24 | Fujitsu Denso Ltd | Power supply circuit |
US4816821A (en) * | 1986-10-02 | 1989-03-28 | U.S. Philips Corp. | Clocked direct voltage converter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4823629U (en) * | 1971-07-23 | 1973-03-17 |
-
1979
- 1979-03-26 JP JP3747679A patent/JPS55127621A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4823629U (en) * | 1971-07-23 | 1973-03-17 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5812026A (en) * | 1981-07-15 | 1983-01-24 | Fujitsu Denso Ltd | Power supply circuit |
JPH0254577B2 (en) * | 1981-07-15 | 1990-11-22 | Fujitsu Denso | |
US4816821A (en) * | 1986-10-02 | 1989-03-28 | U.S. Philips Corp. | Clocked direct voltage converter |
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