Patent ID: 6815842
Filing Date: 2004-11-09
Classification: H05B

Abstract:
A control circuit for sequentially driving a plurality of electrical loads from a single power supply comprising:a converter circuit for receiving a DMX compatible digital control signal and extracting a plurality of address bits therefrom; a decoder circuit for receiving the digital address bits and in response generating a plurality of enable signals, each corresponding to a particular electrical load, a subset of the load enable signals being in an active state and each other enable signal being in an inactive state at any one time; and a relay circuit for receiving the plurality of enable signals, and in response passing an electrical drive signal to each electrical load corresponding to the subset of enable signals that is in the active state, wherein the relay circuit comprises a plurality of discharge circuits for rapidly discharging each electrical load to snap-off a load when the enable signal corresponding to that load changes from the active state to the inactive state.