JPS5495320A - Automatic voltage switching circuit - Google Patents
Automatic voltage switching circuitInfo
- Publication number
- JPS5495320A JPS5495320A JP299778A JP299778A JPS5495320A JP S5495320 A JPS5495320 A JP S5495320A JP 299778 A JP299778 A JP 299778A JP 299778 A JP299778 A JP 299778A JP S5495320 A JPS5495320 A JP S5495320A
- Authority
- JP
- Japan
- Prior art keywords
- input voltage
- state
- switching circuit
- wave rectification
- load
- 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
- Rectifiers (AREA)
Abstract
PURPOSE: To obtain nearly constant output for driving a load regardless of input voltage by providing a switching circuit for output control to change over an input power supply to either full-wave rectification or half-wave rectification corresponding to magnitude of input voltage.
CONSTITUTION: In a switching circuit of output control 1, composed of resistors R1, R3, a variable resistor R2 and transistors Q1, Q2, which is connected to terminals a and b of a transformer T, when input voltage is equal to 100 V, transistor Q1 is OFF state and Q2 is ON state to supply output of full-wave rectification to a load L, and when input voltage increases till 200 V, transistor Q1 is ON state and Q2 is OFF state to supply output of half-wave rectification to the loade L. By this means, an automatic voltage change over is made with a simple configuration because nearly constant mean power is automatically supplied to the load L when input voltage is either 100 V or 200 V.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP299778A JPS5495320A (en) | 1978-01-14 | 1978-01-14 | Automatic voltage switching circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP299778A JPS5495320A (en) | 1978-01-14 | 1978-01-14 | Automatic voltage switching circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5495320A true JPS5495320A (en) | 1979-07-27 |
Family
ID=11545010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP299778A Pending JPS5495320A (en) | 1978-01-14 | 1978-01-14 | Automatic voltage switching circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5495320A (en) |
-
1978
- 1978-01-14 JP JP299778A patent/JPS5495320A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54112157A (en) | Control circuit for field effect thyristor | |
JPS5495320A (en) | Automatic voltage switching circuit | |
JPS5537873A (en) | Controller for dc motor | |
JPS55150791A (en) | Motor driving circuit | |
JPS57113627A (en) | Gate circuit for gate turn-off thyristor | |
JPS54140154A (en) | Stabilized dc power source equipment | |
JPS5445770A (en) | Stabilized power supply | |
JPS5450858A (en) | Temperature controller | |
JPS5697115A (en) | Power supply device | |
JPS55105840A (en) | Interface circuit | |
JPS54135329A (en) | Power source switching circuit | |
JPS5636716A (en) | Constant voltage control system | |
JPS57184361A (en) | Subscriber circuit | |
JPS5619119A (en) | Direct current regulated power supply unit of multioutput | |
JPS54147449A (en) | Protective circuit | |
JPS559272A (en) | Great and constant current power supply system with high speed response | |
JPS569817A (en) | Pulse constant current power source unit | |
JPS57202106A (en) | Oscillation circuit | |
JPS6411279A (en) | Transfer device | |
JPS5518710A (en) | Positive and negative follow-up power circuit | |
JPS5513605A (en) | Voltage control circuit for pulse width modulation power soruce | |
JPS54129443A (en) | Automatic power supply switching circuit | |
JPS55135916A (en) | Constant-voltage circuit | |
JPS5588572A (en) | Dc-dc converter | |
JPS5647815A (en) | Stabilized electric power supply unit |