LIGHT SOURCE DRIVING CIRCUIT

摘要

The control circuit is for achieving fast stabilisation in a lamp circuit after switch-on. An operational amplifier circuit is used as a multiplier to derive a product of the voltage and current for stabilisation purposes, so that the circuit is a constant power stabilisation unit. Constant power stabilisation is used to power the lamp. The lamp is the incandescent type. An operationalamp is used as the power control stage for the lamp and a transistor stage is constant voltage controlled.