This circuit is from a 1968 Electronic Design. The components are from the era and the operating frequency is 60 MHz. No data on the coils is provided.
Found in an Electronic Design from the 90s, this sophisticated continuity tester uses operational...
This logarithmic gain operating configuration was found in the June 1994 Electronics Now magazine. The...
This fast inverter amplifier with high input impedance uses operational amplifiers from the 80's,...