Lm317 High Current Voltage Regulator Circuit

Lm317 high current voltage regulator the lm317t is a very useful adjustable voltage regulator which will take in an input from 3 40 volts dc and output from 1 2 37 volts dc.

Lm317 high current voltage regulator circuit.

In addition to lm317 lm310 a single operational amplifier is also used in the circuit. It can supply greater than 1 5 a at the output. The lm317 ic helps in current limiting thermal overload protection and safe operating area protection. 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.

For a transformer that can supply at least 30 amperes and voltage secondary coil should not be less than 18 volts. The circuit shown above is of a 5a constant current constant voltage regulator using lm317. The output voltage is set simply using a couple of resistors. This configuration also provides the usual regulated stabilized variable voltage output using lm317 however here the current output is immensely increased and thus becomes suitable with circuits involve huge currents at desired settable voltages.

Circuit diagram lm317 voltage regulator ic. 1 i have a lm317 combined with a mj2955 pnp pass transistor. Looking at the proposed high current lm317 regulator circuit design we can see how the basic lm317 variable power supply design which is normally rated to deliver just 1 amp current is cleverly upgraded to a high current version using a few 2n 3055 transistors. The above test circuit supplied 1 amp while 95 of current passed through q1.

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. Such a circuit is a very inevitable gadget on the work bench of an electronic enthusiast. 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. As rated at an excess of 1 5 amps.

In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. The control of the output voltage remained the same. High current adjustable regulator.

It can also provide float operation for high voltage application. Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. The high current lm317 power supply circuit shown down the page makes use of an supplemental winding or possibly a independent transformer to deliver power to the lm317 regulator in order that the outboard pass transistors are able to work nearer to saturation and strengthen efficiency.