Low-pressure discharge lamp driving circuit

Details Low-pressure discharge lamp driving circuit Low-pressure discharge lamp driving circuit

1989-04-12

1991-10-15

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Plural cathodes or heaters in the load device

315105, 315DIG5, H05B 4118

Patent

active

050577450

ABSTRACT:
A driving circuit for a low-pressure discharge lamp, particularly a compact fluorescent lamp, features a heating transformer with two separate secondary windings, which are respectively permanently connected to the lamp electrodes, and furnish them with pre-heating current. Parallel to the primary winding of the transformer, there is connected a series circuit of an operating switch, a ballast inductor, and the discharge path formed between the lamp electrodes. The electrodes are connected to each other via a starter connected in parallel to the discharge path.

REFERENCES:
patent: 2722628 (1955-11-01), Cates et al.
patent: 4230971 (1980-10-01), Gerhard et al.
patent: 4572989 (1986-02-01), Zuchtriegel

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