Lm317 Adjustable Voltage And Current Regulator Circuit

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Lm317 adjustable voltage and current 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. This lm317 calculator can be also be used for some other ics like lm338 or lm350. This current regulator calculator will work for all adjustable integrated circuit regulators with a reference voltage v ref of 1 25. As rated at an excess of 1 5 amps.

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. So this is how we calculate the r2 and output voltage for lm317 voltage regulator circuit. Such a circuit is a very inevitable gadget on the work bench of an electronic enthusiast. For example if the target output voltage is 10v then the r2 value is calculated as following.

Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. By 0 5 amps the device is getting hot. The control of the output voltage remained the same. It is good quality excellent performance and durable with pcb.

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. If you are looking for a high current adjustable voltage regulator circuit. The voltage control properties of the lm317 was normal. In addition to lm317 lm310 a single operational amplifier is also used in the circuit.

I just placed the voltage regulator before the current regulator circuit. The lm317 ic helps in current limiting thermal overload protection and safe operating area. Resistor 240ohm capacitor 1uf and 0 1uf potentiometer 10k battery 9v circuit diagram lm317 voltage regulator ic. The above test circuit supplied 1 amp while 95 of current passed through q1.

In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. 1 i have a lm317 combined with a mj2955 pnp pass transistor. Simple variable lm317 voltage regulator circuit using few easily available components has been designed and tested in this article as follows. Lm317 lm338 lm350 current regulator calculator schematic.

10 1 25x 1 r2 240 r2 1680ω. It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. Lm317 voltage regulator ic. 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.