JPS5515575A - Power supply circuit - Google Patents
Power supply circuitInfo
- Publication number
- JPS5515575A JPS5515575A JP8882378A JP8882378A JPS5515575A JP S5515575 A JPS5515575 A JP S5515575A JP 8882378 A JP8882378 A JP 8882378A JP 8882378 A JP8882378 A JP 8882378A JP S5515575 A JPS5515575 A JP S5515575A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- direct
- power supply
- relay
- decision
- 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
Abstract
PURPOSE: To obtain constantly a constant voltage by automatically detecting the switching of an input commercial power supply by making a decision on a direct- current voltage value obtained by rectifying a commercial alternating-current power and by driving the tap change-over relay of the output transformer of a DC-AC inveter.
CONSTITUTION: A commercial alternating power voltage of 110 or 120V, applied across terminals 1 and 2, is rectified by rectifier 3 and then converted into a direct- current voltage by smoothing capacitor 4. By being applied with this direct-current voltage as a power source, DC-AC inverter 5 operates to develop a high-frequency voltage, which is applied across terminals 7 and 8 or 7 and 9 of high-frequency transformer 6. Relay driver circuit 10 is connected across capacitor 4 and the output of circuit 10 is connected to relay 11 which alternates taps 8 and 9 of transformer 6. Circuit 10, equipped with the direct-current voltage decision part, makes a decision on the input voltage of 110 or 120V to drive relay 11 with time delay and a hysteresis element. Consequently, a voltage is automatically decided at the switching time of the input power supply and an output voltage can be obtained which is stable against variation in power supply.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8882378A JPS5515575A (en) | 1978-07-19 | 1978-07-19 | Power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8882378A JPS5515575A (en) | 1978-07-19 | 1978-07-19 | Power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5515575A true JPS5515575A (en) | 1980-02-02 |
Family
ID=13953641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8882378A Pending JPS5515575A (en) | 1978-07-19 | 1978-07-19 | Power supply circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5515575A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110728A (en) * | 1981-12-22 | 1983-07-01 | Kosaka Kenkyusho:Kk | Lubricant injector for feeding of sludge |
JPS6115071A (en) * | 1984-06-29 | 1986-01-23 | 井関農機株式会社 | Regulator for speed of circulation in circulation type cereal grain drier |
WO2003005110A1 (en) * | 2001-07-03 | 2003-01-16 | Samsung Electronics Co., Ltd. | Apparatus for supplying power and liquid crystal display having the same |
-
1978
- 1978-07-19 JP JP8882378A patent/JPS5515575A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110728A (en) * | 1981-12-22 | 1983-07-01 | Kosaka Kenkyusho:Kk | Lubricant injector for feeding of sludge |
JPS6115071A (en) * | 1984-06-29 | 1986-01-23 | 井関農機株式会社 | Regulator for speed of circulation in circulation type cereal grain drier |
JPH0545876B2 (en) * | 1984-06-29 | 1993-07-12 | Iseki Agricult Mach | |
WO2003005110A1 (en) * | 2001-07-03 | 2003-01-16 | Samsung Electronics Co., Ltd. | Apparatus for supplying power and liquid crystal display having the same |
US7319600B2 (en) | 2001-07-03 | 2008-01-15 | Samsung Electronics Co., Ltd. | Apparatus for supplying power and liquid crystal display having the same |
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