12v 2a Smps Circuit Diagram. Sprint layout prepared by the smps circuit and printed circuit splan s scheme drawing prepared by a transformer wire winding info there. The next design is based on the ic uc2842 from texas instruments which can be also used for building a high grade solid state very reliable smps circuit rated at 12v and with a current output 2 amp to 4 amps.
Make 12v dc power supply. The circuit is built around a low power offline switcher tny266 ic1 photo transistor photo coupler el817 ic2 a flyback transformer x1 and some other easily available components. 2 shows the circuit of a simple 1a 12v smps.
12v ct 12v 2a transformer d1 d2.
Figure 1 the simple 12v 2a power supply circuit diagram. Figure 1 the simple 12v 2a power supply circuit diagram. 1 2k 0 5w resistors led1. The complete circuit diagram of this design can be sen in the following figure.
