Patent ID: 6278625
Filing Date: 2001-08-21
Classification: H01L,H02M,H05B

Abstract:
A circuit for producing an alternating current, comprising:a power source;an oscillator array having an input side and an output side;said power source being connected to said input side of said oscillator array;a first current buffer having an input side and an output side;said input side of said first current buffer being connected to said output side of said oscillator array;a level shifter having an input side and an output side;said input side of said level shifter being connected to said output side of said oscillator array in parallel with said first current buffer;a second current buffer having an input side and an output side;said input side of said second current buffer being connected in series with said output side of said level shifter;a FET half-bridge comprising a first FET and a second FET;a drain of said first FET being connected by an output conductor of said FET half-bridge to a source of said second FET;a gate of said first FET being connected to said output side of said first current buffer;a gate of said second FET being connected to said output side of said second current buffer;an inductor having an input side and an output side;said input side of said inductor being connected to said output conductor of said FET half-bridge; anda piezoelectric transformer having a first input terminal, a grounded second input terminal and an output terminal;said first input terminal being connected to said output side of said inductor.