Precision current source


Posted on Feb 19, 2013    8997

The 2N5457 and PN2222 bipolar serve as voltage isolation devices between the output and the current sensing resistor, Rl. The LM101 provides a large amount of loop gain to assure that the circuit acts as a current source


Precision current source
Click here to download the full size of the above Circuit.

For small values of current (<1 mA), the PN2222 and 10K resistor may be eliminated with the output appearing at the source of the 2N5457.




Leave Comment

characters left:

New Circuits

.


Top