Homemade 0 30v Variable Power Supply Circuit Diagram

0 28v 6 8a power supply circuit diagram using lm317 and 2n3055 this design can produce a current of 20 amps with little modification use proper rating transformer and a huge heat sink with fan.

Homemade 0 30v variable power supply circuit diagram. The output voltage 0 30v and a maximum current of 5a. To modify the lm317 variable regulator 0 30v 1a. 0 to 50v 0 to 10amp variable dual power supply circuit homemade circuit projects the post explains a simple yet very useful 0 to 50v dual power supply circuit which will enable a full 0 to maximum dual voltage control of the input. We may have many ways such as.

High power dc regulator 4 20 volts 20 amps by lm338. I shall be highly obliged if you could provide. Use lm723 as a voltage regulator designed primarily for series regulator applications. Here we ll try to understand how to construct a simplest power supply circuit using the ic lm317.

The circuit also incorporates an electronic output current limiter that effectively controls the output current from a few milliamperes 2 ma to the maximum output of three amperes that the circuit can deliver. By adding the power transistor mj2955 in a circuit. Here r1 refers to 240 ohm r2 could be a 22k pot and rc may be calculated using the following formula for achieving the required current control feature. Normally the ic 7805 is considered as a fixed 5 v voltage regulator device.

This ic is normally available in to 220 package and. How to use lm317 for producing a variable output. This is 0 30v 5a variable benchtop power supply circuit with voltage and current adjustable system. For a transformer that can supply at least 30 amperes and voltage secondary coil should not be less than 18 volts.

1 25v to 30v 5a variable power supply using lm338. How to get 9 v variable voltage from ic 7805. By itself it will supply output currents up to 150 ma. However with a basic workaround the ic could be turned into a 5 v to 9 v variable regulator circuit as shown above.

I am in search of a versatile digital variable power supply diagram with the specifications of 0 30v 0 5amp. As following adjustable voltage and current regulator ic power supply. Or you may build the variable dc regulator 0 30v 5a circuit as well. Huge heat sink is required in this circuit as 2n3055 transistors produce large amount of heat at full load.

The image above shows how to get 5v and 3 3v constant from a given power supply circuit. From all principles above we have circuits applications as shown in figure 4 if you want to add the ic lm338 enabling them to be higher current.