Variable Regulated Power Supply Circuit Diagram Using Lm317

In this tutorial we will show you how to get the variable regulated voltage from the lm317 ic.

Variable regulated power supply circuit diagram using lm317.

However make sure that all the 2n3055 are mounted over a large common heatsink using a generous amount of heatsink compound paste but without mica isolators. Lm317 variable voltage regulator circuit lm117 lm217 lm317 variable voltage regulator characteristics. This ic is normally available in to 220 package and. The project shown here is a schematic of lm317 5a variable or adjustable power supply circuit.

Lm317t is a very famous voltage regulator ic mostly used in many types of power supply circuits and battery charger circuits it is available in to 220 transistor package in the market. The lm317 regulator terminals are. How to use lm317 for producing a variable output. The capacitance c3 bypassing the adjust pin to ground will improve the ripple rejection capability while the diodes are used to protect the regulator from excess flowing through it if a battery or any other voltage source is connected across the output terminals of the regulator.

Here we ll try to understand how to construct a simplest power supply circuit using the ic lm317. With a small circuitry attached with lm317 we can get variable voltage up to 37v with 1 5a max current. The lm317 is a 3 terminal positive voltage regulator with a 1 25 to 37 volts output voltage range. In input out output adj adjust.

Thus this simple tweak using a few 2n3055 transistor transforms a ordinary lm317 variable regulated power supply into an awesome high current lm317 regulated variable power supply unit.