This current boosting circuit uses an op-amp and 3 transistors. The current depends on Q1. The circuit is from the 1995 Encyclopedia of Electronic Circuits Volume 5.
Texas Instruments LMV3xxA operational amplifiers are low voltage types (2.5 to 5.5 V). In the...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
This circuit is from 1993 documentation. The table shows the component values for voltage...