Op Amps: Current Boosting 

Sometimes we can obtain sufficient voltage from an op amp but do not have sufficient current. Examples include driving low impedance loads or loads with high capacitance. While it is possible to use ICs which boast higher output current and power, another approach is to add a current boosting stage within the op amp's feedback loop, as shown in this video.
References: Operational Amplifiers: Theory and Application; Chapter 4, section 4.
My free texts and lab manuals are available for download at my college web site www.mvcc.edu/j... and at my personal site www.dissidents.com
Inexpensive print and kindle copies are available at Amazon www.amazon.com...
If you like my texts and videos, and would like to help defray the costs of making and maintaining them, consider making a modest donation at www.buymeacoff...