Variable Ac Power Supply Schematic

This simple variable power supply circuit has a low production cost and delivers an output voltage between 1 5.

Variable ac power supply schematic.

This is a convenient and inexpensive solution for powering electronics projects. A transformer is used to step down the ac supply to 24v at 2a. Using a single diode. Usually a potentiometer is used for voltage adjustments.

Or incorporating a single chip for the active functions. These may be built using discrete components like transistors resistors etc. A variable power supply is one which facilitates the user to vary and adjust the desired output voltage and output current. But it still has the same characteristics as a fixed regulated power supply.

A power supply can be given from the battery or from a hardware circuitry which converts the ac supply into the dc supply or step down ac to step up ac and vice versa. A dimmer is a phase angle power reducing circuit which essentially chops the sine wave to deliver less effective power to the load. Simply said it is a power supply that can adjust the output voltage or current. A variable voltage autotransformer also known as variac is a transformer which is able to transform or produce ac mains voltages at different desired levels at its output.

The working of the circuit is as follows. What is a variable power supply. The most basic and crude form of power supply design is the one which uses a single diode and a capacitor. Transistor variable power supply 1a 0 30v.

If you measure the voltage with a common meter it will likely read a lower voltage because the meter is performing rms calculations for you but this isn t the. It will keep a stable voltage when it has any load. A variable power supply unit is a must for every electrical and electronic work bench and it s available in a variety of shapes and sizes in the market and also in the form of schematics to us. One of these modules can easily be connected to the output of a dc bench supply or even a salvaged.

This power supply circuit is highly stabilized that its output voltage will drop only 0 005 even though the. A quick and easy way to get variable voltage from a fixed voltage dc power supply is to use a commercially available adjustable voltage converter module. Unfortunately this is not a variable ac supply. 0 1v to 50v variable power supply received by email 01 21 2009.

Thus unlike an ordinary transformer its output voltage is not fixed rather can be varied manually to obtain more than a single voltage. It is a robust reliable and easy to use variable dc power supply. If you need ac power supply is cheaper this project is a good way. Adjustable power supply circuit.