The integrated circuit used is uncommon today. We found this configuration in Motorola's 1990 Linear Databook. The triac can be any of the TIC series.
We found this circuit in a 1992 documentation. It consists of a digital signal splitter used in...
This 1986 documentation circuit provides 3, 4, 5, 6 V voltages under 350 mA for powering walkmans...
This circuit isolates a stage with Triac from a TTL or CMOS trigger circuit, for example. The...