This circuit was found in an article in Radio Electronics magazine from May 1975. The circuit has several features and is powered by a 12 V source or battery.
We found this circuit in an old American publication. The transistors can be BC558 and diode 1N34....
This simple circuit operates with only 1.5 volts of a battery and detects low resistance making a...
The cascade connection of two flip-flops allows division by 4, as shown in the figure. Note that...