Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Discharge control discharge device in the supply circuit
Patent
1983-10-26
1986-06-17
Chatmon, Saxfield
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Discharge control discharge device in the supply circuit
315DIG4, 315DIG5, 315240, 315156, 315158, 315223, 315241R, H05B 3700, H05B 3900, H05B 4114
Patent
active
045958637
ABSTRACT:
A luminous gas filled tube system has a direct current source, a pulse transformer secondary winding, the emitter-collector path of a transistor, and the gas filled tube connected in series. The voltage of the source is below the ionization potential of the gas in the tube but adequate to supply current when the gas is ionized. A pulse source is connected for selectively generating a high voltage pulse in the winding of magnitude such that, when added to the voltage from the source, the ionization potential of the gas is exceeded. A starter circuit is provided for selectively actuating the pulse source to initiate ionization of the gas in the tube. A variable resistor is provided for selecting the amount of current flowing in the series circuit at any level below a maximum rating of the transistor.
REFERENCES:
patent: 4051411 (1977-09-01), Knoble et al.
patent: 4051412 (1977-09-01), Knoble et al.
patent: 4189663 (1980-02-01), Schmutzer et al.
patent: 4194143 (1980-03-01), Farkas et al.
patent: 4197485 (1980-04-01), Nuver
patent: 4275335 (1981-06-01), Ishida
patent: 4358717 (1982-11-01), Elliott
patent: 4385262 (1983-05-01), Cambier
patent: 4469981 (1984-09-01), Ruff et al.
Chatmon Saxfield
Lightmasters, Ltd.
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