We found this circuit in a 1977 Timers Cookbook. The circuit uses common components to divide a 1 kHz signal by 2. The output has an amplitude of 2 Vpp.
In the figure we have a bistable multivibrator using an operational one. The circuit is from old...
This is another of the Star Trek red alert circuit that you can find on this site. We took this...
This circuit for testing zener diodes by lifting their curve on an oscilloscope was presented in...