Method and apparatus for controlling the power supplied to a...

Details Method and apparatus for controlling the power supplied to a... Method and apparatus for controlling the power supplied to a...

2005-03-22

2005-03-22

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S125000

Reexamination Certificate

active

06870748

ABSTRACT:
An apparatus for controlling the power supplied from an AC power supply to an ohmic load, includes a switch for connecting the load to the AC power supply, a controller for providing a control signal to the switch, and a rectifier bridge having an input and an output. The input is adapted for connection to the AC power supply and the output is connected to a series connection of a first inductor, the load and the switch. The controller provides a control signal with a frequency which is at least 500 times higher than the frequency of the AC power supply. The switch is switched on and off by the control signal. The controller comprises a control element for varying the duty cycle of the control signal.

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