Circuit arrangement and signalling light provided with the circu

Details Circuit arrangement and signalling light provided with the circu Circuit arrangement and signalling light provided with the circu

1999-06-29

2000-11-14

Vu, David

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch cut-out

315307, 315DIG7, H05B 3702

Patent

active

061474584

ABSTRACT:
A circuit arrangement for operating a semiconductor light source includes connection terminals for connecting a control unit, an input filter, a converter comprising a control circuit, output terminals for connecting the semiconductor light source, an apparatus CM for removing a leakage current occurring in the control unit in the non-conducting state, and a self-regulating circuit for deactivating the apparatus CM. The circuit arrangement is also provided with a detection circuit for detecting an incorrect functioning of the converter or the semiconductor light source. For this purpose, preferably a minimum voltage and a maximum voltage are detected at the output terminals.

REFERENCES:
patent: 5646484 (1997-07-01), Sharma et al.
patent: 5661645 (1997-08-01), Hochstein
patent: 5719450 (1998-02-01), Vora

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