Electric lamp and discharge devices: systems – Periodic switch in the supply circuit – Silicon controlled rectifier ignition
Patent
1975-08-04
1977-05-10
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Periodic switch in the supply circuit
Silicon controlled rectifier ignition
315177, 315239, 315DIG5, 315DIG7, H05B 4129
Patent
active
040230678
ABSTRACT:
An inverter circuit suitable for use as a fluorescent lamp inverter ballast is disclosed. The inverter has the capability of starting the fluorescent lamp through regenerative feed-back techniques made possible by the amplification characteristic of the inverter switching transistor. Good efficiency at high frequency is provided by minimizing the transistor switching losses through use of resonant storage techniques and an unique feed-back system. Further, the normal energy lost in the feed-back circuit is eliminated by combining the resonant load means and the feed-back means into a single structure.
REFERENCES:
patent: 2896124 (1959-07-01), Brown
patent: 3629648 (1971-12-01), Brown et al.
patent: 3869640 (1975-03-01), Kolomyjec
patent: 3882354 (1975-05-01), May
Hetherington James E.
Zelina William B.
LaRoche Eugene R.
Lighting Systems Inc.
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