Jack C Cordes

US Patent:

43587160, Nov 9, 1982

Filed:

Apr 14, 1980

Appl. No.:

6/139846

Inventors:

Jack C. Cordes - Columbus OH
Dennis J. Denen - Columbus OH

Assignee:

White Castle System, Inc. - Columbus OH

International Classification:

G05F 100
H05B 3702
H05B 3904
H05B 4136

US Classification:

315306

Abstract:

The present solid state device generates variable interval, high frequency bursts of alternating current to dim or otherwise control a discharge lamp or the like, and features an adjustable duty-cycle burst control subcircuit that intermittently interrupts a pair of constant, phase-reversed, high frequency pulse sequences, thereby permitting variable interval bursts of the pulse sequences to reach a pair of semiconductor devices. The semiconductors alternately switch ON and OFF in response to the high frequency pulses applied thereto, thereby rapidly alternating the direction of current flow through a suitable inductor configuration which, in turn, is connected to the load.