220v turn 110V circuit diagram

Filter 18.432M

The following is a circuit diagram of the 220V to 110V circuit diagram

220v turn 110V circuit diagram

The filter capacitor of this circuit uses four 200V/470uF capacitor strings, which are connected in parallel to form a 100V/470uF capacitor, as shown in Figure 1. When K is closed, it is 110V voltage input. When K is off, it is 220V voltage input, and the output DC voltage is (220*2)V. The principle is shown in Figure 2. When K is disconnected, the circuit is a general full-wave rectifier circuit. When K is closed, set A+B one, then the current passes through A→D3→C1→B, so that c1 is charged with (110*2) V voltage; when A—B+, the current passes B→C2→D1→A C2 is charged with (110*2) V voltage. At this time, the output voltage is the sum of the voltages on C1 and C2 (220*2) V. In fact, this circuit is a voltage doubler rectifier circuit. Replace K with a two-way thyristor, plus a 110V/220V detection circuit to trigger the thyristor to turn on at 110V input, and turn off at 220V input, which can easily realize automatic conversion of 110V and 220V. .