This circuit can be adjusted between 0.2 and 2 V to trigger with chosen voltages comparing them with the input voltages. We found it in a 1967 documentation.
This triac synchronized circuit was found in the July 1995 issue of Electronics Now magazine. The...
In this circuit of a 1975 publication, a silicon transistor is used as a sensor. We can employ a...
This circuit is from the Linear Circuits Application of Texas Instruments, using an operational amplifier...