Operating in the range of 3 to 100 MHz, this circuit was found in documentation from the 70s. Observe the coil. The field effect transistor is a component of the era.
This circuit has been found in an old documentation, but can be used as input shield for current...
This circuit generates signals from 0.01 Hz to 10 kHz, but uses unusual components today. The...
This circuit was found in the June 1969 issue of Radio Electronics magazine. The circuit uses a...