Lm317 Adjustable Voltage And Current Regulator Circuit

The lm317 ic helps in current limiting thermal overload protection and safe operating area.

Lm317 adjustable voltage and current regulator circuit.

It can supply greater than 1 5 a at the output. The control of the output voltage remained the same. This lm317 calculator can be also be used for some other ics like lm338 or lm350. 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.

The voltage control properties of the lm317 was normal. It can give the output current 20a or 400watts and can adjust the voltage of 4 to 20v or apply to 0 to 30v easily. Such a circuit is a very inevitable gadget on the work bench of an electronic enthusiast. For more information about these voltage regulators see the lm317 lm338 lm350 voltage regulator calculator information and circuits page.

The above test circuit supplied 1 amp while 95 of current passed through q1. 1 i have a lm317 combined with a mj2955 pnp pass transistor. If you are looking for a high current adjustable voltage regulator circuit. 10 1 25x 1 r2 240 r2 1680ω.

By 0 5 amps the device is getting hot. 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. I just placed the voltage regulator before the current regulator circuit. The circuit shown above is of a 5a constant current constant voltage regulator using lm317.

It has an internal current limiting temperature detects shutdown and safe area compensation. This current regulator calculator will work for all adjustable integrated circuit regulators with a reference voltage v ref of 1 25. This may be a better choice for you. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads.

Lm317 has only three terminals and gives variable regulated output. Lm317 lm338 lm350 current regulator calculator schematic. It is good quality excellent performance and durable with pcb. 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.

Resistor 240ohm capacitor 1uf and 0 1uf potentiometer 10k battery 9v circuit diagram lm317 voltage regulator ic. It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. So this is how we calculate the r2 and output voltage for lm317 voltage regulator circuit. Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v.

In addition to lm317 lm310 a single operational amplifier is also used in the circuit. Lm317 voltage regulator ic.