How to connect the optical potentiator (lamp)? Please comment
The simple thing is that the potentiometer adjusts the voltage.I hope my answer will help you.
The first page of my photo album has a bi-directional silicon control circuit. When you open, click the above {view the original picture} button to see clearly.
The conductance of the thyristor is controlled by a bi-directional trigger diode, which is similar to the PWM
