Electricity: power supply or regulation systems – Remote sensing
Patent
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.
Goldberg Gerald
Tokyo Shibaura Electrical Co., Ltd.
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