The circuit shown in the figure below is from the 1993 Linear Technology Applications. The operational ones used are uncommon and the use of equivalents can be analyzed.
This circuit produces fast light pulses in na incandescent lamp. Pulse rate is adjusted by P1. The...
This circuits shows how to use in operational amplifier as a basic voltmeter. Power supply must be...
This 1968´s amplifier uses a JFET at the input to increase the impedance. Voltage gain is high,...