Systems comprising a relaxation oscillator particularly for elec

Details Systems comprising a relaxation oscillator particularly for elec Systems comprising a relaxation oscillator particularly for elec

1974-12-19

1976-03-02

Miller, J. D.

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Plural load device systems

317 96, 315209CD, H05B 3702

Patent

active

039420787

ABSTRACT:
The invention relates to systems comprising a triggering element such as a thyristor triggered from a relaxation oscillator and relates more particularly to an electrical igniter.
In this system means are provided for ensuring the automatic decrease of the intensity of the triggering pulses supplied by the oscillator so that triggering automatically stops after a predetermined time. These means comprise a timing mechanism formed by a resistance inserted in series in the discharge circuit of the oscillator with a capacitor and diode in parallel on the said resistance, the diode being oriented so as to charge the capacitor under the action of pulses supplied by the oscillator.
The invention can be applied to an igniter for gas burners.

REFERENCES:
patent: 3474291 (1969-10-01), Kallage

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