Dc to ac converter

Details Dc to ac converter Dc to ac converter

H - Electricity

02

M

H02M 7/53 (2006.01) H02M 7/5383 (2006.01)

Patent

CA 2331345

An electronic transformer consisting of a square wave power oscillator having a diode reverse capacitance serving as frequency tuning, wherein said power oscillator connected to a dc source typicly derived from the ac outlet and said generator is driving a transformer having substantial leakage inductance and the primary of said transformer is connected through a capacitor that forms a resonant circuit with said leakage inductance. A second capacitor is connected to the junction of said first capacitor and transformer primary and a resistor are in series with said second capacitor . The voltage developed on said first resistor is proportional to the current in the transformer primary and after rectified it is fed to a diode with apritiable reverse capacitance. This capacitance then will decrease in response to the current and will increase the frequency of said power oscillator and in turn will limit said current to a safe value.

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