Power supply with multiple ac input voltages

Details Power supply with multiple ac input voltages Power supply with multiple ac input voltages

H - Electricity

02

M

H02M 7/02 (2006.01)

Patent

CA 2325592

The present invention provides a simple circuit for a DC power supply. The power supply circuit of the present invention includes a transformer in combination with a switching power supply circuit. The transformer includes a primary winding to which a wide range of AC input voltages is applied and a secondary winding for supplying the resultant AC voltage range as an input voltage to the switching power supply circuit. The switching power supply circuit further includes an input terminal having the input voltage applied thereto by the secondary winding and further having an output terminal from which a DC power supply output is generated. The transformer can be selected from a group of transformers consisting of step-down, step-up and repeater transformers. The switching power supply circuit may be selected from any convention switching power supply circuit including step-up, step, down and inverter converters, and combinations thereof, or even linear configurations.

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