초록 ▼

A power converter is disclosed. In one embodiment, the power converter includes an input for receiving a supply power; a switching device for controlling of power delivered to an output load; a controller for controlling the operation of the switching device; a first and second sensing circuit for p

A power converter is disclosed. In one embodiment, the power converter includes an input for receiving a supply power; a switching device for controlling of power delivered to an output load; a controller for controlling the operation of the switching device; a first and second sensing circuit for providing first and second signals indicative of voltage and current inputs, respectively, to the converter; and a detector to detect a difference in polarity between the first and second signals; wherein the switching device is operable to switch between a first and second state, the first state being `on' and the second state being `off', and wherein the controller causing the switching device to be in the first state responsive to a detected difference in polarity between the signals to thereby dissipate a residual energy in the power converter.

대표청구항 ▼

1. An AC-AC power converter including:input means for receiving supply power; switch means electronically connected to the input means, The switch means for providing control of power delivered to an output load; control means electronically connected to the switch means, the control means for contr

1. An AC-AC power converter including:input means for receiving supply power; switch means electronically connected to the input means, The switch means for providing control of power delivered to an output load; control means electronically connected to the switch means, the control means for controlling the operation of the switch means; and a first sensing circuit for providing a first signal indicative of voltage input to the converter; a second sensing circuit for providing a second signal indicative of input current To the converter; detecting means, responsive to the sensing circuits, to detect a difference in polarity between the first and second signals; wherein the switch means is operable to switch between a first and a second state, the first state being `on' and the second state being `off', and wherein the control means causes the switch means, which is for providing control of power delivered to an output load, to be in the first state responsive to the detecting means detecting a difference in polarity, thereby dissipating a residual energy in the power converter.