Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Plural discharge devices and/or rectifiers in the supply...
Patent
1978-05-08
1980-02-05
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Plural discharge devices and/or rectifiers in the supply...
315208, 315239, 315278, 363155, H05B 4116
Patent
active
041874498
ABSTRACT:
Circuit for providing low ripple DC power supply from a single-phase AC source without the use of a filter capacitor. The circuit comprises a high leakage reactance transformer with a primary winding and two secondary windings arranged with the secondary windings on opposite sides of the primary winding, a leading current circuit connected to one secondary winding and a lagging current circuit connected to the other secondary winding, and a three-phase full wave rectifier bridge connected to the leading and lagging current circuits to provide a low ripple DC power output. The DC power supply circuit is used with a pulse generating circuit to provide pulsed operation of a gaseous discharge lamp such as a high pressure sodium vapor lamp, and produces desirable relationship of lamp watts to lamp volts for improved lamp life and uniformity of illumination.
REFERENCES:
patent: 2467863 (1949-04-01), Short
patent: 3061759 (1962-10-01), Spector
patent: 3787751 (1974-07-01), Farrow
patent: 4084217 (1978-04-01), Brandli et al.
General Electric Company
Greenberg Sidney
LaRoche Eugene R.
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