Lm317 High Current Voltage Regulator Circuit

The output voltage is set simply using a couple of resistors.

Lm317 high current voltage regulator circuit.

The circuit shown above is of a 5a constant current constant voltage regulator using lm317. 1 i have a lm317 combined with a mj2955 pnp pass transistor. The control of the output voltage remained the same. It can supply greater than 1 5 a at the output.

High power dc regulator 4 20 volts 20 amps by lm338. Such a circuit is a very inevitable gadget on the work bench of an electronic enthusiast. High current adjustable regulator. Circuit diagram lm317 voltage regulator ic.

In addition to lm317 lm310 a single operational amplifier is also used in the circuit. For a transformer that can supply at least 30 amperes and voltage secondary coil should not be less than 18 volts. It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. 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.

In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. 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. 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. Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v.

The lm317 ic helps in current limiting thermal overload protection and safe operating area protection. It can also provide float operation for high voltage application. As rated at an excess of 1 5 amps. 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.

The voltage control properties of the lm317 was normal. By 0 5 amps the device is getting hot. The above test circuit supplied 1 amp while 95 of current passed through q1.