We found this circuit in the Linear Applications Handbook of the National Semiconductor of 1994. The circuit can be adapted to use other operational amplifiers and the power supply must be symmetrical.
This is the circuit of a small commercial amplifier from the 1970s from Philips Argentina. The...
June 2017 - New Honeywell MT MICROSWITCH Series can be ordered from Mouser Electronics for...
This simple circuit indicates the conductivity of materials through two LEDs and two LEDs are...