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RC Models, DIY Hobby Electronics, Arduino Projects, RC Airplanes
DIY Adjustable Voltage Regulator for Beginners
Posted on: 30 November 2019
This tutorial explains how to make a simple adjustable voltage regulator using LM317. You will learn how it works, how to develop the circuit, whether cooling is required, and how to cool the regulator properly.
Topic: Basic adjustable voltage regulator tutorial.
Recommended Tools
-
MUSTOOL MT8206 2-in-1 Intelligent Digital Oscilloscope Multimeter
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DANIU PX-988 90W Digital Thermostat Adjustable Soldering Iron
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Necessary Materials
- LM317 Voltage Regulator IC – Buy
- 0.1µF Capacitor – Buy
- 10µF / 33µF Capacitors – Buy
- 5K Potentiometer – Buy
- 1N4007 Diode – Buy
- 5mm LED – Buy
- PCB Board – Buy
- 5×5 cm 12V Cooling Fan – Buy
- 3300µF 25V Capacitor (or 4700µF) – Buy
- 1.5KΩ 1W Resistor – Buy
- 240Ω 1/4W Resistor – Buy
- 24V Transformer – Buy
- Soldering Iron Stand – Buy
Basic Adjustable Regulator Circuit
This is the simplest LM317 adjustable voltage regulator circuit configuration.
More Stable and Protected Version
This version adds extra components for better voltage stability and protection.
Power Supply
Use a suitable transformer, rectifier, and large filter capacitors before feeding the LM317 regulator. Proper filtering improves output stability.
Tags
adjustable voltage regulator, DIY power supply, LM317 regulator circuit, voltage regulator, electronics
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