The circuits below were found in amarican publication of the year 1958. The transistors are germinium types and the circuit also works with LEDs in series with 47 to 470 ohm resistor. Modern silicon transistors can be used in these circuits.
The circuits below were found in amarican publication of the year 1958. The transistors are germinium types and the circuit also works with LEDs in series with 47 to 470 ohm resistor. Modern silicon transistors can be used in these circuits.
