Circuit for starting an hid lamp

Details Circuit for starting an hid lamp Circuit for starting an hid lamp

1998-03-20

1999-12-28

Wong, Don

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch in the primary circuit of the supply...

315209R, 315224, 315276, 315DIG5, H05B 3702

Patent

active

060085916

ABSTRACT:
Proposed for the purpose of starting a high-pressure discharge lamp is a cuit which in the conventional way comprises a starting transformer (12) whose secondary side is connected to the lamp to be started and whose primary side is connected to a circuit triggering the starting pulse, the circuit triggering the starting pulse generating starting pulses with a pulse duration of less than 0.5 .mu.s and a repetition frequency of at least 2 kHz. An IGBT (Insulated Gate Bipolar Transistor) (14) is preferably used as switching element.

REFERENCES:
patent: 4472661 (1984-09-01), Culver
patent: 5404287 (1995-04-01), Poumey
patent: 5463287 (1995-10-01), Kurihara et al.
patent: 5491388 (1996-02-01), Nobuyuki et al.
patent: 5747944 (1998-05-01), Harada
patent: 5831394 (1998-11-01), Huber et al.

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