Patent ID: 9742310
Date: 2017-08-22
CPC Classifications: H02M,Y02B

Claim:
1. An electrical conversion apparatus for use in satisfying the requirement of a load, the apparatus comprising a bridge rectifier having an input side and an output side, the load being connected to the output side of the bridge rectifier, a switched capacitor line arranged in parallel with the output side of the bridge rectifier and the load, the switched capacitor line comprising a capacitance and a switch arranged in series with one another so that the switch can control charging and discharging of the capacitance, and a control arrangement operable to control the operation of the switch, wherein the control arrangement is operable such that whenever the output voltage of the bridge rectifier is above a threshold level and is rising the switch is closed so that the capacitance charges and the load is satisfied from the output of the bridge rectifier, whenever the output of the bridge rectifier is above the threshold level and is falling the switch is opened so that the capacitance is isolated from the load, the load still being satisfied by the output of the bridge rectifier, and whenever the output of the bridge rectifier is below the threshold level, the switch is closed so that the load is served by discharge of the capacitance supplementing the output from the bridge rectifier.