Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1993-02-17
1994-09-06
Bertsch, Richard A.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315224, H05B 3702
Patent
active
053451481
ABSTRACT:
A DC-AC converter for igniting and supplying a gas discharge lamp comprises a converter control circuit including a starter circuit containing first, second and third switching elements; a load circuit including at least one gas discharge lamp; and an igniting circuit including a fourth switching element, wherein the converter control circuit controls a current through the lamp via a current sensor resistor during a pre-heating stage; the igniting circuit disenables the third switching element and thereby isolates the converter control circuit during an igniting stage; and the converter control circuit controls the current through the lamp via the current sensor resistor during normal operation.
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Chia Che L.
Zeng Xiaming
Bertsch Richard A.
Singapore Institute of Standards and Industrial Research
Thorpe Timothy S.
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