MOSFET oscillator for supplying a high-power RF inductive load

Details MOSFET oscillator for supplying a high-power RF inductive load MOSFET oscillator for supplying a high-power RF inductive load

1991-11-25

1993-03-02

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

219 1077, 331117FE, 331167, 331182, H03B 102, H03B 512

Patent

active

051913020

ABSTRACT:
A self-excited solid-state oscillator for supplying a high-power RF inductive load. The oscillator includes at least one MOSFET transistor connected in a self-excited oscillator configuration, an output tuned circuit including an inductive load and a tank circuit connected to the load, the tank circuit having a resonant frequency determined at least in part by the inductance of the load, an RF feedback transformer coupling the tank circuit to the gate of the MOSFET for providing a switching signal to the MOSFET for causing the MOSFET to alternate between the on state and the off state at a frequency equal to the resonant frequency of the tank circuit, and a bias circuit for superimposing a forward bias voltage on the switching signal.

REFERENCES:
patent: 3448407 (1969-06-01), Lankreijer
patent: 4001725 (1977-01-01), Rossnick
patent: 4321563 (1982-03-01), Lesartre
patent: 4471196 (1984-09-01), Frank et al.

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