We found this circuit in an old General Electric documentation. In fact, PUTs are not common components today. The circuit is valid as a reference.
The circuit shown is from the Texas Instruments optoelectronics manual. It is intended for audio...
This circuit was found in a 70s American documentation. The operational amplifier supports a modern...
This circuit for the power grid was found in the June 1969 Radio Electronics magazine. The SCR and...