This Power Supply puts out 22[Volts] by max. 4[A]. Be sure you use the right transformator 30[Volt] at least 130[Watt]!!! Also make sure that all capacitors can handle the delivered voltage, see schematic 63[V] will do. Allthough one TIP2955 can deliver almost 10[A] (when oversized cooled) it’s better not to go beyond 5-6[A]. To prevent [...]

Circuit power supply 5V 5A by 7805+Mj2955 This is circuit 7805+Mj2955 power supply 5V 5A for digital circuit.Q MJ2955 for to increase form IC 7805. Q A16 for overload protect.

Build-in charger for instruments powered single Li-ion or Li-pol accumulator. If external charge voltage not conected to charger, back current from accu to charger is very small (not measured ordinary multimeters)

This is circuit Regulator 5V 3A by IC LA5105. (easy circuit) To use transformer 4A. IC to Hold Heatsink. For Digital circuit.

Circuit High power supply regulater 0-30V 20A by LM338 This is High current and Adjustable Volt 0 to 30V 20A. It easy circuit and nice circuit, Because use IC LM338 and IC 741. Volt Output adj by VR1-1K. IC LM338 to hold heat-sink. Transformer is 20A up.

R1a = 2,2 K R1b =470 Ohm R2 = 10 K R3, R7 = 3.3 k R4 = 390 Ohm R5 = 47 K R6 = 3.3 K 1Watt R8 = 180 Ohm R9, R10 = 0.47 Ohm 3Watt R11 = 0.075 Ohm 2Watt R12 = 470 Ohm P1 = 500K liner potentiometer P2 = [...]