Found in Signalite documentation from the 1960s, this circuit generates ladder pulses. The circuit generates 3 steps and below 40 V of power, it works as a frequency divider.
In the figure we have a signal detector using a tunnel diode. The circuit is from a Radio...
We found this 2-transistor circuit in Radio Electronics magazine from July 1961. The circuit is...
This circuit or practical idea comes from a time when cheap solar cells were not available (1992). What is...