Voltage stabilizers circuit diagrams

Variable Power Supply Using Fixed Regulator

This is a similar power supply that I used to power my FM Transmitter. After suffering long problems with mains hum, this design using a pi filtered C-L-C approach. This circuit offers excellent ripple rejection.

Multiple Output DC Converter

A DC converter circuit taking one single DC input and converting to parallel multiple DC outputs.

1.5 to 37 Volt 30 Amp Power Supply

A modification to the 12V 30 Amp power supply. This version uses an LM317 to provide a variable 1.5 to 37 Volt regulated output with currents up to 30 Amps. Max has built his power supply into an old computer case and can be seen on YouTube under Project Icarus.

Variable Voltage Regulator

Variable Voltage Regulator

Small Variable power Supply

Features: 1.3-12.2 V, 1 A, over-current protection. This is a simple but reliable device based one of the oldest integrated voltage regulators of them all - the LM723.

Basic UPS

This circuit is a simple form of the commercial UPS, the circuit provides a constant regulated 5 Volt output and an unregulated 12 Volt supply. In the event of electrical supply line failure the battery takes over, with no spikes on the regulated supply.

12 Volt 20 Amp Power Supply

A 12 Volt high current 20 Amp power supply. The output voltage is variable from 12.2 Volt to 14.4V so can be set for any device requiring voltage and current in that range. This PSU uses an LM723 as the regulator, 4 parallel connected outboard pass transistors and has current limiting above 25 amps.

Regulated DC power supply

This is a Regulated DC power supply with short circuit protection and with current limiter.

Regulated 12 Volt Supply

A basic regulated 12 Volt power supply

L200 Power Supply

Power supply with variable voltage and fixed current regulation made using the ubiquitous L200C regulator.