This circuit was found in Motorola's Linear Interface ICs of 1993. The integrated circuit used is not common and the load current depends on the Triac.
We found this circuit in an old documentation from the 80's. The integrated circuit used is an...
Using two 741 operational amplifiers, this low-pass circuit has a cutoff frequency of 10 kHz. We...
Using a 4N33 optical coupler, we have in the figure an optical interface for TRTL circuits,...