This circuit was found in an Electronic Design. The circuit can be programmed to operate in different frequency ranges with the indicated characteristics. The IC component is uncommon today.
This drain dip oscillator was found in an old English documentation. The JFET can be of any type...
This SCS counter circuit was found in a 1964 General Electric documentation. The circuit has a...
This is the circuit of a commercial radio from the 60s, sold in Japan. The circuit shows the...