Single transistor oscillator ballast circuit

Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Periodic switch in the primary circuit of the supply...

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315206, 315208, 331113A, H05B 3702

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active

046137963

ABSTRACT:
A single power transistor oscillator circuit includes a single transistor oscillator coupled by an inductive means including an inductive coil and transformer to a DC potential development means with a wave-shaping means coupled to a secondary winding of the transformer to provide a substantially symmetrical AC potential centered about a zero level DC voltage and applied to a load circuit.

REFERENCES:
patent: 4005335 (1977-01-01), Perper
patent: 4254362 (1981-03-01), Tulleners
patent: 4261025 (1981-04-01), Chafer et al.
patent: 4547705 (1985-10-01), Hirayama

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