Patent ID: 8035331
Filing Date: 2011-10-11
Classification: H02M

Abstract:
1. An AC/DC converting circuit, comprising a full-bridge double voltage circuit, comprising an electronic switch having a control terminal; a trigger circuit having an input terminal and an output terminal; and a detecting circuit having an input terminal and an output terminal; wherein said first capacitor and said second capacitor are serially connected between said output terminals of said full-bridge rectifier; said input terminals of said full-bridge rectifier are connected to an AC input; one end of said electronic switch is connected between said first capacitor and said second capacitor; the other end of said electronic switch is connected to one of said output terminals of said full-bridge rectifier; said input terminal and said output terminal of said detecting circuit are connected to said output terminals of said full-bridge rectifier; said output terminal of said detecting circuit is connected to an input terminal of said trigger circuit; and said output terminal of said trigger circuit is connected to said control terminal of said electronic switch.