Circuit arrangement suitable for igniting a high-pressure discha

Details Circuit arrangement suitable for igniting a high-pressure discha Circuit arrangement suitable for igniting a high-pressure discha

1990-11-27

1992-01-28

Mis, David

Electric lamp and discharge devices: systems

Surge generator or inductance in the supply circuit

Circuit interrupter in the inductance circuit

315DIG7, H05B 4104

Patent

active

050846558

ABSTRACT:
A circuit arrangement for igniting a high-pressure discharge lamp (6), in which ignition voltages are generated by means of discharges from two capacitors (10, 14) through a primary winding (12) of a transformer. During this, the lamp (6) is connected to a secondary winding (4) of this transformer. One capacitor (14) is charged to a higher voltage than the other capacitor (10), the two capacitors being discharged alternately through breakdown elements (11, 15) associated with the capacitors (10, 14, respectively). An ignition pulse with a low peak value for igniting the lamp (6) in the cold state is then followed by an ignition pulse with a high peak value for igniting the lamp (6) if it should be in the hot state.

REFERENCES:
patent: 4209730 (1980-06-01), Pasik
patent: 4441056 (1984-03-01), Siglock
patent: 4461982 (1984-07-01), Faharich
patent: 4890041 (1989-12-01), Nuckolls et al.

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