Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1989-09-18
1991-01-08
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315209T, 361257, H05B 4136
Patent
active
049838865
ABSTRACT:
This high-energy ignition generator, especially for gas-turbines, of the type including an energy source (1) connected to a first circuit containing an energy storage capacitor (10), an inductor (11) and an ignition plug (12), in series, a free-wheel diode (15) being connected in parallel with the terminals of the inductor (11) and the ignition plug (12) and means of short-circuiting (16) the first circuit so as to generate sparks between the electrodes of the plug (12), is characterized in that the means of short-circuiting (16) include at least one semi-conductor switching device (17,18) controlled by means of comparison (32) of the voltage at the terminals of the storage capacitor (10) with a first reference voltage, and in that means of control (2,3,4,7; 39,40,41) of the charge of the capacitor (10) at a first rate during an initial period of time and at a second rate during a second period of time, the second rate being higher than the first, are interposed between the energy source (1) and the first circuit.
REFERENCES:
patent: 3583378 (1971-06-01), Pattee
patent: 3635202 (1972-01-01), Issler et al.
patent: 3714507 (1973-01-01), Schweitzer et al.
patent: 4133329 (1979-01-01), Caron
patent: 4153032 (1979-05-01), Chateau
patent: 4244337 (1981-01-01), Asai
patent: 4418375 (1983-11-01), Ober
patent: 4454560 (1984-06-01), Nakao et al.
Dinh Son
Labo Industrie
LaRoche Eugene R.
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