Precision current source


Posted on Feb 19, 2013

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

.

 


Popular Circuits

Low Noise And Drift Composite Amp Circuit
Enlarging Light Meter Circuit
Tone control low noise circuit Schematic Diagram
Servo motor control
hf 5 band mosfet amplifier
one tube regen radio circuit
Simple Siren Circuit
Light-Controlled Pond Pump
Allarm circuit
Current leakage protection circuit
Bedside lamp with CD production delay
5W Valve RF Transmitter circuit



Top