Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1980-06-09
1982-05-18
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315DIG5, 315DIG7, 315101, 315206, 313112, H05B 3702, H05B 3904, H05B 4136
Patent
active
043307361
ABSTRACT:
A power source for operating gas discharge lamps and other loads at high frequency, typically utilizing a dc source or a rectified ac source to produce a high frequency output. An inverter with oscillator circuit and first transformer has the secondary or load winding connected to a second transformer which provides a feedback signal to the transistor of the oscillator circuit through another transistor which functions as a variable resistance in the base drive of the oscillator transistor for maintaining power to the load substantially constant. A third winding on the inverter transformer is used to provide a control signal to the base circuit of the variable resistance for protecting the circuit components during an open secondary or no load condition.
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patent: 4104715 (1978-08-01), Lawson, Jr.
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patent: 4183080 (1980-01-01), Liebman
Chatmon, Jr. Saxfield
Iota Engineering Inc.
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