This audio circuit was published in a Rado Electronics issue from October 1963. The transistors are from the time and the output is low impedance. Power is supplied with a voltage of 12 V.
In this circuit, the output voltage is slowly established, thus avoiding the impact when...
This Japanese commercial transistor radio circuit was found in a 1967 documentation. The...
The circuit in the figure is a current regulator with adjustment in the range of 0 to 3 amps. The...