Two-lead igniter for HID lamps

Details Two-lead igniter for HID lamps Two-lead igniter for HID lamps

1989-02-15

1990-09-25

Mis, David

Electric lamp and discharge devices: systems

Surge generator or inductance in the supply circuit

Circuit interrupter in the inductance circuit

315DIG7, H05B 4118

Patent

active

049595938

ABSTRACT:
A universal two-lead igniter for high intensity discharge lamps includes a first parallel RC network connected in series circuit with a second network between the two terminals of the igniter. The second network may include a second parallel RC network coupled to the first RC network via a voltage-responsive bidirectional switching device, such as a Sidac. Alternatively, the second network may include a second capacitor and an inductor connected in series with the Sidac device, The igniter is adapted to be connected in parallel with the lamp and generates, by means of a resonant type of operation of the first and second networks, a high frequency, high voltage pulsatory open circuit voltage that provides more reliable ignition of a HID lamp.

REFERENCES:
patent: 3758818 (1973-09-01), Kaneda
patent: 3866088 (1975-02-01), Kaneda et al.
patent: 4461982 (1984-07-01), Fahnrich
patent: 4876486 (1989-10-01), Joanino

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