ACPOWER PUPPLY POWER CIRCUIT

摘要

An AC power supply power circuit comprises a power input unit connected to a DC/AC converter. The AC/DC converter is connected to a DC/DC circuit, and the DC/DC circuit is further connected to an adjustable DC voltage regulation circuit. The adjustable DC voltage regulation circuit is connected to an amplifier to amplify and convert the DC voltages into the AC voltages, thereby outputting different AC voltages and electric currents under the condition of not switching off the power supply and attaining not to stop outputting when adjusting the voltage via cross position, so that a power level is switched promptly and a distortion thereof is very low.

主权项

1. An AC power supply power circuit comprising:
a power input unit externally connected to an AC power, thereby supplying an AC voltage from an outside; an AC/DC converter connected to said power input unit for converting said AC voltage input from said power input unit into a DC voltage via a filter and rectification; an DC/DC circuit connected to said AC/DC converter for providing a full-wave rectified DC voltage which is formed by transforming a voltage level of said DC voltage output from said AC/DC converter; an adjustable DC voltage regulation circuit connected to said DC/DC circuit for regulating and stabilizing said voltage level of said DC voltage output from said DC/DC circuit; and an amplifier connected to said adjustable DC voltage regulation circuit for amplifying and converting said DC voltage output from said adjustable DC voltage regulation circuit into an AC voltage.