This circuit takes advantage of the noise generated at the reverse biased junction of a germanium diode. Other types of diodes can be used. The signal is weak.
This electronic ignition circuit uses a new component at the time, the Ignistor, a transistor with...
This timer is characterized by its simplicity and the fact that it does not need a relay, being...
We found this circuit in an English documentation from 1968. The circuit draws a number from 1 to...