Techniques for controlling remote lamp loads

Details Techniques for controlling remote lamp loads Techniques for controlling remote lamp loads

H - Electricity

05

B

H05B 39/04 (2006.01) H05B 39/08 (2006.01)

Patent

CA 2169519

For energizing remote lamp loads subjected to indeterminate transmission losses, a current regulating power supply is described which delivers a regulated current to the load using for example, a full wave rectifier supplying an unfiltered pulsating voltage to a switching regulator controlled by a feedback loop incorporating a current sensing resistor and pulse width modulator. The supply has a substantially unity power factor, a self-quenching characteristic in the presence of circuit interruptions, and can deliver regulated current to a variety of lamp types.

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