JPS55108018A - Power supply unit - Google Patents
Power supply unitInfo
- Publication number
- JPS55108018A JPS55108018A JP1473479A JP1473479A JPS55108018A JP S55108018 A JPS55108018 A JP S55108018A JP 1473479 A JP1473479 A JP 1473479A JP 1473479 A JP1473479 A JP 1473479A JP S55108018 A JPS55108018 A JP S55108018A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- voltage
- output voltage
- fed
- 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
- Television Receiver Circuits (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE: To achieve the selection means of power supply to the load circuit suitable for the remote control with a simple constitution, by effectively using the regulated power supply circuit having the switching element for control use.
CONSTITUTION: The power input unregulated is switched and smoothed with the switching transistor Tr6 controlling the regulated power supply circuit 1, and the output voltage is fed to the reception circuit. The output voltage is divided with the resistors 15, 16 and fed to the base of Tr17 for error detection, it is compared with the reference voltage set with the Zener diode 14 in advance, the conduction period of Tr6 is controlled with the result of comparison to regulate the output voltage. The output voltage is detected with Tr28, 29 of the power supply selection circuit 2 and the remote control reception circuit 27, and control voltage is fed to the protection circuit 20 when the voltage is less than a given voltage, Tr6 is interrupted with the protection circuit 20 to simplify the selection of the power supply to the reception circuit.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1473479A JPS55108018A (en) | 1979-02-09 | 1979-02-09 | Power supply unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1473479A JPS55108018A (en) | 1979-02-09 | 1979-02-09 | Power supply unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55108018A true JPS55108018A (en) | 1980-08-19 |
JPS6357804B2 JPS6357804B2 (en) | 1988-11-14 |
Family
ID=11869346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1473479A Granted JPS55108018A (en) | 1979-02-09 | 1979-02-09 | Power supply unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55108018A (en) |
-
1979
- 1979-02-09 JP JP1473479A patent/JPS55108018A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6357804B2 (en) | 1988-11-14 |
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