0 30v Power Supply Circuit Using Lm317

Lm317 power supply circuit diagram and calculations.

0 30v power supply circuit using lm317.

How to use lm317 for producing a variable output. With the advent of chips or ics like lm317 l200 lm338 lm723 configuring power supply circuits with variable voltage output with the above exceptional qualities has become very easy nowadays. This ic is normally available in to 220 package and. It s high volt and starts voltage at zero.

The lm317 series of adjustable 3 terminal positive voltage regulators is capable of supplying in excess of 1 5a over a 1 2v to 37v output range. Best adjustable dc power supply 3a. It s high volt and starts voltage at zero. The ic is capable of delivering up to 1a of output current.

How to make 3 3v 5v 12v and 24v regulated power supplies using the lm317 regulator. Some circuits based on lm317 voltage regulator. 0 30v dc dual variable supply using lm317 lm337 max adjusts the voltage of 0 60v. The lm317 is a 3 terminal positive voltage regulator with a 1 25 to 37 volts output voltage range.

1 2v 20v 3v 6v 9v 12v high current for all circuit easy to use. The lm317 regulator terminals are. By using two 2n3055 transistors we become more then 2 times the amount of amps then the power supply delivers making it real though to brake. Hence ac voltage regulator circuits can be designed.

Lm317 is a three terminal voltage regulator ic from national semiconductors. Dual adjustable power supply circuit using lm317 and lm337. Few useful circuits using the voltage regulator ic lm317 is shown here. Lets make a high current power supply with lm317 voltage regulator which can supply upto 5 amp lm317 is one of the oldest most used and wonderful linear voltage regulators.

I personally love this ic yes it s not a transistor a lot not because it server it purpose well but because it s cheap easy and never disappoints you while making a regulated dc power supply. Huge heat sink is required in this circuit as 2n3055 transistors produce large amount of heat at full load. This design can produce a current of 20 amps with little modification use proper rating transformer and a huge heat sink with fan. Without any further delay let s get started.

Input voltage can be up to 40v and output voltage can be adjusted from 1 2v to 37v. Battery charger circuits reverse polarity circuits variable power supply motor control circuits are designed using lm317 ic. This is an easy to make power supply which has stable clean and regulator 0 28v 6 8 amp output voltage. For experimenting electronic circuits and project we require variable power supply it requires center tap transformer.

Although you could use this design to deliver 20 amps with almost no modifications and with a proper transformer and a huge heat sink with a fan. Here we ll try to understand how to construct a simplest power supply circuit using the ic lm317. By using two lm317 ic s you can regulate both the positive and negative swings of a sinusoidal ac input.