Ballast circuit for gas glow discharge devices

Details Ballast circuit for gas glow discharge devices Ballast circuit for gas glow discharge devices

1977-02-24

1978-08-15

Smith, Alfred E.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315208, 315307, 323 4, H05B 41392, G05F 152

Patent

active

041075803

ABSTRACT:
The ballast circuit comprises a transistor having its collector and emitter and an emitter resistor in series with an alternating current operated current-controlled power supply and a gas discharge load device, such as a He-Ne gas laser. The transistor base is biased by a resistance voltage divider between the collector and the other end of the emitter resistor. A decoupling capacitor is connected between that end of the emitter resistor and the base.

REFERENCES:
patent: 3238415 (1966-03-01), Turner
patent: 3560842 (1971-02-01), Caprari
patent: 3801867 (1974-04-01), West et al.
patent: 3806762 (1974-04-01), Punis et al.

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