Voltage resonance inverter circuit for dimable cold cathode tube

Details Voltage resonance inverter circuit for dimable cold cathode tube Voltage resonance inverter circuit for dimable cold cathode tube

1995-11-22

1997-09-09

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 97, 363131, H02M 7539

Patent

active

056662793

ABSTRACT:
An object of the present invention is to provide a voltage resonance inverter circuit capable of performing constantly a zero-voltage switching action in response to a change in the input voltage. For achievement of the above object of the present invention, the capacitance of a voltage resonance capacitor is decreased in response to an increase of the input voltage thus increasing the characteristic impedance of a resonance circuit. This will increase the amplitude of a resonance voltage causing a zero-voltage switching action.

REFERENCES:
patent: 5216585 (1993-06-01), Yasumura
patent: 5278748 (1994-01-01), Kitajima
patent: 5448465 (1995-09-01), Yoshida et al.
patent: 5450307 (1995-09-01), Yasumura
patent: 5490052 (1996-02-01), Yoshida et al.
patent: 5530638 (1996-06-01), Wu

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