Electric lamp and discharge devices: systems – Electric switch in the supply circuit
Patent
1980-03-25
1982-06-29
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Electric switch in the supply circuit
315102, 315104, 315DIG2, 315DIG5, H05B 3702, H05B 3906, H05B 4104, H05B 4118
Patent
active
043374182
ABSTRACT:
A starting circuit for gas discharge lamps, such as fluorescent lamps, includes a relay coil controllable switch. A rectifier-multiplier has its input connectable to the alternating-current mains via the controllable switch. A polarity-reversing switch is coupled to an output from the rectifier-multiplier for supplying direct-current to electrodes of at least one gas discharge lamp. Devices responsive to energization of the mains effect reversal of the polarity-reversing switch upon each energization of the mains. A time-delay relay responsive to each energization of the mains effects the closing of the relay coil controllable switch subsequent to each polarity-reversing action of the polarity-reversing switch.
REFERENCES:
patent: 3801794 (1974-04-01), Mauch et al.
patent: 3858087 (1974-12-01), Tomsky et al.
patent: 3890540 (1975-06-01), Ott
patent: 4100462 (1978-07-01), McLellan
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