Lm317 Adjustable Current Limiter Circuit

It can supply greater than 1 5 a at the output.

Lm317 adjustable current limiter circuit.

A constant current circuit can also be used as a current limiter. To be precise the upper lm317 forms the current regulator stage while the lower acts like a voltage controller stage. 3d biometrics hyperspectral imaging. Lm317 3 terminal adjustable regulator 1 1 features 1 output voltage range adjustable from 1 25 v to 37 v output current greater than 1 5 a internal short circuit current limiting thermal overload protection output safe area compensation 2 applications atca solutions dlp.

It can also provide float operation for high voltage application. Precision current limiter schematic for lm317 lm338 lm350. This circuit addresses that problem. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads.

Lm317 can also be used to design various other circuits like 0 v to 30 v regulator circuit adjustable regulator circuit with improved ripple rejection precision current limiter circuit tracking pre regulator circuit 1 25 v to 20 v regulator circuit with minimum program current adjustable multiple on card regulators with single control. The lm317 ic helps in current limiting thermal overload protection and safe operating area protection. This is also a pb free device. The following circuits show some of the basic uses of the lm317 lm338 lm350 series of voltage regulators when configured as a current regulator or constant current source ccs.

Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. 1 amp current regulator schematic for lm317 lm338 lm350. As you determined in your op there s a problem using a variable resistor in a current source mode because all the current goes through the variable resistor. The input supply source is connected across the vin and ground of the upper current regulator circuit the output from this stage goes to the input of the lower lm317 variable voltage regulator stage.

Also see lm317 high power constant current source circuit. A constant current source ccs in electronics is a device circuit that produces a constant value of current regardless of source voltage or load resistance.