Control system for even lighting of surface elements in a glass

Details Control system for even lighting of surface elements in a glass Control system for even lighting of surface elements in a glass

1995-12-12

1997-07-29

Krishnan, Aditya

Electricity: power supply or regulation systems

Output level responsive

Zero switching

H05B 608

Patent

active

056525036

ABSTRACT:
A triac-based electronic control system (20) for an electrical appliance which alternately applies and disrupts power in full cycles or full half cycles. Each zero crossing in a wave cycle is detected and this information is input into a microprocessor (U1) along with a user selected power level. The microprocessor outputs a triac control signal (36) to alternately turn ON and turn OFF power to a heater element (22) to produce a duty cycle used to achieve the desired heating level.

REFERENCES:
patent: 5010223 (1991-04-01), Kim

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