This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used as a basis for modern designs with equivalent transistors.
This simple injector circuit can actually be powered by voltages from 3 to 9 V. The frequency is...
We found this amplifier with high input impedance and low capacitance, using FET, in a...
This two-tone buzzer can be powered by a solar panel. The circuit is from a 1991 documentation. The...