Electric arrangement for starting and supplying a low-pressure d

Details Electric arrangement for starting and supplying a low-pressure d Electric arrangement for starting and supplying a low-pressure d

1982-06-25

1984-05-22

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With cathode or cathode heater supply circuit

Pulsating or a.c. supply to the cathode or heater circuit

315101, 315290, 315DIG5, H05B 4118

Patent

active

044503830

ABSTRACT:
The invention relates to starting and supplying a low-pressure discharge lamp which comprises two electrodes between which a main discharge path is formed, a shunt path being electrically in parallel with at least a portion of said main discharge path.
In accordance with the invention the lamp is started by means of a glow-discharge starter which is shunted by a VDR the threshold voltage of which is lower than a value determined by the geometry of the shunt path, and is higher than the minimum voltage for starting a discharge in the main discharge path. The discharge then only starts in the main discharge path.

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