High-frequency heating generator comprising a multiple-grid elec

Details High-frequency heating generator comprising a multiple-grid elec High-frequency heating generator comprising a multiple-grid elec

1987-02-25

1988-08-02

Laroche, Eugene R.

Oscillators

L-c type oscillators

219 1077, H03B 510, H05B 602

Patent

active

047616180

ABSTRACT:
A high-frequency heating generator comprising a multi-grid electron tube 15 for use in industrial systems in the range of several kilowatts to a number of megawatts. In order to obtain an economic high-frequency generator, the electron tube 15 comprises at least two grids 152, 153; of which a first grid 153 is connected to a positive feedback circuit (15') of the oscillator circuit. A source of bias voltage may be supplied to the second grid 152. A low voltage control circuit (16) is connected to either the first (153) or second (152) grid, and the anode 151 is connected to a non-controlled d.c. power source (13, 14).

REFERENCES:
patent: 3571644 (1971-03-01), Jakoubovitch
patent: 3733454 (1973-05-01), Schwartz
patent: 4161022 (1979-07-01), Kanazawa et al.

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