Thyristor-firing apparatus using an acoustic surface wave device

Details Thyristor-firing apparatus using an acoustic surface wave device Thyristor-firing apparatus using an acoustic surface wave device

1974-06-03

1976-02-24

Goldberg, Gerald

Electricity: power supply or regulation systems

Remote sensing

307252B, 307252J, 310 81, 310 98, H02P 1314

Patent

active

039406857

ABSTRACT:
A thyristor-firing apparatus using an acoustic surface wave device wherein an electric signal for firing a thyristor is converted into an acoustic surface wave and again converted into an electric signal which in turn is supplied between the gate and cathode electrodes of the thyristor. The electric signal applied to the acoustic surface wave device is obtained through amplitude modulation of a carrier signal by a control pulse, and an output from the surface wave device is rectified or demodulated to fire the thyristor.

REFERENCES:
patent: 2902659 (1959-09-01), Ketchledge
patent: 3360749 (1967-12-01), Sittig
patent: 3479572 (1969-11-01), Pokorny
patent: 3480797 (1969-11-01), Bedford et al.
patent: 3843932 (1974-10-01), Fischman
patent: 3848140 (1974-11-01), Guermeur et al.
"Application of Acoustic Surface Wave to Power Electronics" by Takahashi, et al., Pesc 74 Record, pp. 187-196.

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