General Electric suggests this circuit in an 80's documentation. The circuit makes use of PUTs that are not common components today. Note the timing components that may change.
This circuit was obtained in a 1970 EEE and applies to almost any operational amplifier. The...
The circuit shown in the figure generates a square signal (50% active cycle) when the pressure switch...
We found this transistorized AM receiver of the regenerative type of excellent quality in a...