LM338 Circuit 1,5v…32v – 3A s you know, every electronic circuit needs power. That is why power supplies and voltage stabilizers are one of the most popular topics, enjoying uninterrupted interest. The presented power supply is an application of the popular LM338 regulator IC, which housed practically all elements of the high voltage regulator LM338.
LM338 Power Supply circuit schematic
The LM338 Power Supply input voltage is rectified with Graetz (B1 bridge diode) and filtered through capacitors C1 4700uf and C3 100nf. The LM338 has a protective structure in its structure that prevents overheating and damages the output transistor caused by a short circuit.
The presence of the voltage at the output of the power supply informs the LED1. The output voltage is determined by the potentiometer R4. The voltage changes according to the formula: Uw = 1.25 [V] * (1 + R4 / R2). The maximum voltage applied to the LM338 input should not exceed 40V.
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