This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
This circuit generates sequence of pulses in order and times determined by the capacitors in pins...
The presented rectangular oscillator makes use of one of the four NAND ports of a 4093 integrated...
This circuit was found in a 1966 American publication. The critical component is the tunnel diode. ...