Ignition system for gas discharge lamps

Details Ignition system for gas discharge lamps Ignition system for gas discharge lamps

1981-11-09

1984-11-20

Laroche, Eugene R.

Electric lamp and discharge devices: systems

Surge generator or inductance in the supply circuit

Circuit interrupter in the inductance circuit

315280, 315279, 315289, 315DIG5, 313351, H05B 4118, H01J 130

Patent

active

044841094

ABSTRACT:
A system operating in combination with a gas discharge lamp, such as a fluorescent lamp having electrodes therein, to effect ignition in a cold state without an ignition delay. Applied across the electrodes through a current-limiting coil is a voltage derived from a standard alternating-current supply. The supply voltage is also applied through an ignition switch to a starter coil inductively coupled to the current limiting coil to define therewith a step-up transformer, such that when this switch is closed, a high ignition voltage is imposed on the electrodes to produce an arc-discharge which heats up the electrodes. The resultant electron emission from the electrodes makes it possible to re-open the ignition switch after a brief interval, the lamp thereafter continuing to operate on the relatively low supply voltage.

REFERENCES:
patent: 2916671 (1959-12-01), Retzer
patent: 3219880 (1965-11-01), Pett
patent: 3280371 (1966-10-01), Toda et al.
patent: 3453478 (1969-07-01), Shoulders et al.
patent: 3629650 (1971-12-01), Brighton et al.
patent: 3740686 (1973-06-01), Jarrige et al.
patent: 4247803 (1981-01-01), Walz

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