JPS55135918A - Constant-voltage power supply circuit - Google Patents
Constant-voltage power supply circuitInfo
- Publication number
- JPS55135918A JPS55135918A JP4298579A JP4298579A JPS55135918A JP S55135918 A JPS55135918 A JP S55135918A JP 4298579 A JP4298579 A JP 4298579A JP 4298579 A JP4298579 A JP 4298579A JP S55135918 A JPS55135918 A JP S55135918A
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- waveform
- pulse width
- voltage
- insulating transformer
- 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 get rid of a ringing effect and to economize unnecessary power consumption for suppressing it, by using two switching elements and driving the primary side of the insulating transformer by low impedance at all times.
CONSTITUTION: The switching elements 1 and 2 conduct each other, and the voltage of its middle point becomes such a waveform as switching between the output voltage E of the unstabilized power supply 13 and the ground. This waveform becomes a waveform clamped at the position which has been lowered by the voltage drop portion in the forward direction by a diode 6 after passing through a cpacitor 3, an insulating transformer 4 and a capacitor 5. Since the average value of this waveform is varied depending upon the pulse width, an output voltage which has beeen smoothed by the pulse width can be changed. Accordingly, the output voltage is compared with the reference voltage, and in case the output voltage is higher, a pulse of narrow width is generated by the modulation circuit 10, is input into the drive circuit 12 through the insulating transformer 11, and conduction of the elements 1 and 2 is controlled by this output in order to reduce the pulse width. On the other hand, in case the output voltage has been dropped, the pulse width is increased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4298579A JPS55135918A (en) | 1979-04-11 | 1979-04-11 | Constant-voltage power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4298579A JPS55135918A (en) | 1979-04-11 | 1979-04-11 | Constant-voltage power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55135918A true JPS55135918A (en) | 1980-10-23 |
Family
ID=12651320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4298579A Pending JPS55135918A (en) | 1979-04-11 | 1979-04-11 | Constant-voltage power supply circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55135918A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4904016A (en) * | 1986-05-16 | 1990-02-27 | Nissan Motor Co., Ltd. | Front spoiler arrangement |
-
1979
- 1979-04-11 JP JP4298579A patent/JPS55135918A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4904016A (en) * | 1986-05-16 | 1990-02-27 | Nissan Motor Co., Ltd. | Front spoiler arrangement |
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