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

Current Booster
Agc System For Audio Signals Circuit
Voice Identifier Circuit
gps driven clock compasss peedo
SI Programmer
ATA5743 ATA5743 UHF ASK/FSK Receiver
BU8732AKV Codec Ic For Digital Mobile Phone
AC Locomotive Auxiliary Equipment
Guitar Patch Cord
5-motor walker circuit
Double five-band equalizer circuit