Electric circuit with transient voltage doubling for improved op

Details Electric circuit with transient voltage doubling for improved op Electric circuit with transient voltage doubling for improved op

1982-09-10

1988-08-23

Moore, David K.

Electric lamp and discharge devices: systems

Discharge device and/or rectifier in the supply circuit

Discharge device and/or rectifier in shunt to the load device

315DIG7, 315290, 315224, 315307, 315199, 315106, H05B 4136

Patent

active

047663502

ABSTRACT:
The invention relates to an electric arrangement for operating a an electric discharge lamp (13) which is connected in series with a coil (14) and a switch (15) to a pulsatory direct voltage source. The combination of the lamp and the coil is shunted by a rectifier. The lamp is shunted by a capacitor (18) and the switch is periodically rendered conductive at an instant when the instantaneous voltage of the pulsatory direct voltage source is between 0.5 and 0.8 times the then required re-ignition voltage of the lamp. The voltage build up across the capacitor (18) after the switch has become conducting causes the lamp to reignite. The luminous efficacy of the lamp is comparatively high.

REFERENCES:
patent: 3422309 (1969-01-01), Spira et al.
patent: 3890537 (1975-06-01), Park et al.
patent: 3919592 (1975-11-01), Gray
patent: 4009099 (1978-07-01), Grudelback
patent: 4121136 (1978-10-01), Fournier et al.
patent: 4167689 (1979-09-01), Quirke
patent: 4168453 (1979-09-01), Gerhard et al.
patent: 4291254 (1981-09-01), Arlt et al.
patent: 4398126 (1983-08-01), Zuchtriegel

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