System, circuit and method for tuning a resonant circuit

Details System, circuit and method for tuning a resonant circuit System, circuit and method for tuning a resonant circuit

2007-03-13

2007-03-13

Vu, Bao Q. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S284000, C323S285000

Reexamination Certificate

active

11123712

ABSTRACT:
A circuit may be tuned to resonate at a driving frequency. The circuit includes a source that provides an output at a drive frequency and a resonant circuit having an input coupled to the source, an output, and first and second selectable resonant frequencies. The first resonant frequency is below the drive frequency and the second resonant frequency is above the drive frequency. A control coupled to the resonant circuit output selects the first and second resonant frequencies to cause the resonant circuit to provide an output at an apparent resonant frequency equal to the drive frequency.

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patent: WO 98/11942 (1998-03-01), None

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