Constant Current Source Online Calculator

App description

Input parameters: desired current value, unit: mA; Q1 dissipated power, unit: mW; power supply voltage, unit: V

Output parameters:

R1= kOhm

R2= kOhm

R3= kOhm

Ro= kOhm

Px= mW

Reference circuit diagram

Usage example

Input parameters: desired current value: Iout=10mA; Q1 dissipated power: Ptot=300mW; power supply voltage E1=12V

Output parameters: R1=0.1200kOhm; R2=1.2000kOhm; R3=10.1kOhm; Ro=4710.6kOhm; Px=108mW

Note

Input power supply voltage should not be too large