Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1979-06-18
1981-06-16
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
307252B, 307252T, 315207, 315240, 315272, 315243, 315227R, H05B 3702, H05B 3904, H05B 4136
Patent
active
042740339
ABSTRACT:
High frequency circuit for operating gaseous discharge lamps includes oppositely poled controlled semiconductor switches connected to a resonant circuit comprising a capacitor and inductor connected to the lamp load and serving both as a high-frequency ballast for the lamp and to effect alternating turn-off of the semiconductor switches. Diodes are connected to the switches in a manner to provide energy pulses on the lamp load without return to the supply source. A control circuit is provided for alternately triggering the semiconductor switches into operation.
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Chatmon, Jr. Saxfield
General Electric Company
Greenberg Sidney
Kempton Lawrence R.
Schlamp Philip L.
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