SWITCHING POWER SUPPLY

A switching power supply, in which a series circuit consisting of a primary winding of a transformer (4) and a controllable switch (3) is connected with a DC power source (l0) and a secondary winding of the transformer is connected with a first voltage source (50) outputting the voltage developed ac...

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Bibliographic Details
Main Authors YAMATO, IKUO, TOKUNAGA, NORIKAZU, AMANO, HISAO, NOGUCHI, SHOICHI, ODAKA, TERUAKI
Format Patent
LanguageEnglish
Published 17.11.1988
Edition4
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:A switching power supply, in which a series circuit consisting of a primary winding of a transformer (4) and a controllable switch (3) is connected with a DC power source (l0) and a secondary winding of the transformer is connected with a first voltage source (50) outputting the voltage developed across the secondary winding during the on-period of the controllable switch and a second voltage source (60) storing the exciting energy of the transformer during the off-period of the controllable switch by using the exciting inductance of the transformer as a current source, a series circuit consisting of the first and the second voltage sources being connected with a load (70). Owing to this construction, even if voltage-current characteristic of a load having constant voltage chracteristic, such as a magnetron, vary due to variations in the temperature, etc., the output voltage is automatically compensated and a stable electric power can be supplied to the load.
Bibliography:Application Number: EP19870104305