Switching arrangement

Details Switching arrangement Switching arrangement

1987-12-04

1989-11-14

Yusko, Donald J.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315119, 315127, 315205, 315209T, 315DIG7, 315176, H05B 4104

Patent

active

048810126

ABSTRACT:
A switching arrangement for ignitio of a high-pressure discharge lamp, The switching arrangement is provided with means for suppressing the production of ignition pulses in case the lamp has ignited or in cast it fails. The switching arrangement comprises a pushpull circuit which is supplied on the one hand by the supply voltage and on the other hand by the voltage across the lamp. An output terminal of the push-pull circuit is connected to the means for suppressing the production of ignition pulses. Thus, it is achieved in a simple manner that the lamp voltage influences the blocking and activation of the production of ignition pulses.

REFERENCES:
patent: 3280371 (1966-10-01), Toda et al.
patent: 3723849 (1973-03-01), Ludloff
patent: 3900786 (1975-08-01), Jorda
patent: 4103209 (1978-07-01), Elms
patent: 4763044 (1988-08-01), Nuckolls et al.

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