Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit – Circuit interrupter in the inductance circuit
Patent
1990-12-06
1991-10-01
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Surge generator or inductance in the supply circuit
Circuit interrupter in the inductance circuit
315DIG7, 315360, 315307, 315308, H05B 3700, H05B 3900, H05B 4136, G05F 100
Patent
active
050536834
ABSTRACT:
A starting and operating device for controlling a starter that ignites a sodium lamp, AC power voltage being provided to the starter and sodium lamp by means of a power supply transformer having its secondary winding connected to the starter and sodium lamp, and its primary winding connected to an AC power source. The device comprises an AC/DC converter connected to the primary winding for converting AC voltage into a low DC voltage; a high power disabling device for disabling the starter; an optor-isolator connected to the high power disabling device for controlling the high power disabling device by means of a low DC signal, and for electrically isolating the high power disabling device; a timer connected to the opto-isolator for generating the low DC signal after passage of a predetermined amount of time to disable the starter; and a first delay circuit connected to the AC/DC converter for detecting energizing of the AC/DC converter, and for generating a delayed resetting signal for the timer after detection of the energizing whereby the AC/DC converter can be stabilized before resetting the timer.
REFERENCES:
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patent: 4896077 (1990-01-01), Dodd et al.
patent: 4962336 (1990-10-01), Dodd et al.
patent: 4996464 (1991-02-01), Dodd et al.
LaRoche Eugene R.
Lendar Design Inc.
Shingleton Michael B.
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