Lm317 Adjustable Voltage And Current Regulator Circuit

The control of the output voltage remained the same.

Lm317 adjustable voltage and current regulator circuit.

In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. Such a circuit is a very inevitable gadget on the work bench of an electronic enthusiast. 10 1 25x 1 r2 240 r2 1680ω. For example if the target output voltage is 10v then the r2 value is calculated as following.

It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. It is good quality excellent performance and durable with pcb. This current regulator calculator will work for all adjustable integrated circuit regulators with a reference voltage v ref of 1 25. The circuit shown above is of a 5a constant current constant voltage regulator using lm317.

I just placed the voltage regulator before the current regulator circuit. By 0 5 amps the device is getting hot. For more information about these voltage regulators see the lm317 lm338 lm350 voltage regulator calculator information and circuits page. This lm317 calculator can be also be used for some other ics like lm338 or lm350.

The voltage control properties of the lm317 was normal. If you are looking for a high current adjustable voltage regulator circuit. As rated at an excess of 1 5 amps. Lm317 voltage regulator ic.

1 i have a lm317 combined with a mj2955 pnp pass transistor. Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. Lm317 lm338 lm350 current regulator calculator schematic. Simple variable lm317 voltage regulator circuit using few easily available components has been designed and tested in this article as follows.

Resistor 240ohm capacitor 1uf and 0 1uf potentiometer 10k battery 9v circuit diagram lm317 voltage regulator ic. This may be a better choice for you. It has an internal current limiting temperature detects shutdown and safe area compensation. So this is how we calculate the r2 and output voltage for lm317 voltage regulator circuit.

The only issue is i used a 18 0 18 transformer 500ma rated i intentionally used less current one r3 changed to 2 ohm and r1 to 220 ohm and managed to get only 0 100 ma of current regulation. The lm317 ic helps in current limiting thermal overload protection and safe operating area. Lm317 has only three terminals and gives variable regulated output. It has an adjustable 3 terminal positive voltage regulator designed to supply more than 1 5 a of load current with an output voltage adjustable over a 1 2v to 37v range.

It can supply greater than 1 5 a at the output. We know lm317 is a popular adjustable positive voltage regulator with capability of delivering 1 5a output current to the load over an output voltage range of 1 25 v to 37 v.