Electric arrangement including at least one gas and/or vapor dis

Details Electric arrangement including at least one gas and/or vapor dis Electric arrangement including at least one gas and/or vapor dis

1979-02-05

1981-02-24

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, 315102, 315245, H05B 4116

Patent

active

042530431

ABSTRACT:
The invention relates to an electric arrangement comprising two series-arranged discharge tubes which are provided with preheatable electrodes and which are stabilized by means of a relatively small ballast. The tubes are shunted by a semi-conductor switching element which operates in the operating condition of the tubes.
According to the invention a control circuit of the semi-conductor switching element includes a non-linear circuit element which ensures that the discharge tubes do not ignite before the electrodes are in the warm state.

REFERENCES:
patent: 3924155 (1975-12-01), Vogeli
patent: 3978368 (1976-08-01), Tomura et al.

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