Ignition circuit for a discharge lamp

Details Ignition circuit for a discharge lamp Ignition circuit for a discharge lamp

1998-08-27

2000-05-30

Vu, David H.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315224, 315244, H05B 3702

Patent

active

060694548

ABSTRACT:
A circuit arrangement for supplying a discharge lamp with a direct current includes input terminals for connection to a supply voltage source. A circuit portion (I) is coupled to the input terminals for generating a DC voltage from the supply voltage and is provided with output terminals between which the DC voltage is present during operation. A first branch comprising a first capacitor interconnects the output terminals and a second branch comprising a series arrangement of a second capacitor and an impedance shunts the first branch. A load branch shunts the series arrangement and comprises terminals for connecting a discharge lamp. The second branch also includes a diode so that a discharge lamp operated by way of the circuit arrangement stabilizes satisfactorily after ignition by a current supplied by the second capacitor to the lamp via the impedance.

REFERENCES:
patent: 5343125 (1994-08-01), Bernitz et al.
patent: 5677602 (1997-10-01), Paul et al.

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