Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit – Circuit interrupter in the inductance circuit
Patent
1982-02-18
1984-07-24
Dixon, Harold
Electric lamp and discharge devices: systems
Surge generator or inductance in the supply circuit
Circuit interrupter in the inductance circuit
315176, 315276, 315289, 315DIG7, H05B 3700
Patent
active
044619820
ABSTRACT:
To insure reliable starting, a superposition igniter circuit utilizes an iliary capacitor (10) which has a resistor (6) connected in parallel thereto. This parallel arrangement is serially connected with a pulse capacitor (7) and a choke (2) to form therewith a series oscillatory circuit which is connected directly with the primary winding (8, 13) of the pulse transformer (4, 11) in order to raise the lamp voltage during ignition. The parallel connection of the auxiliary capacitor (10) and the resistor (6) forms a load impedance for the pulse capacitor (7); the series circuit of the auxiliary capacitor (10) and the pulse capacitor (7) form a high-frequency short-circuit capacitor system. A voltage-sensitive semiconductor switch (9), such as a four-layer diode or a triac, disconnects the auxiliary capacitor (10) after lamp ignition, thus interrupting the series auxiliary circuit, permitting only normal supply voltage to be applied to the lamp (1).
REFERENCES:
patent: 3681653 (1972-08-01), Snyder
patent: 4275337 (1981-06-01), Knoble et al.
patent: 4342948 (1982-08-01), Samuels
Dixon Harold
Patent-Treuhand Gesellschaft fur elektrische Gluhlampen mbH
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