Opto control for triac (CB20552E)

Found a documentation for PC from 1992, this circuit is indicated for the English power grid of 240 V.

Electronic Dice (CB9876E)
This is another one of the many versions of electronic data that we have on this website. Once...
Shield TTL and CMOS Low Level C (CB11409E)
The circuit shown can drive loads from 500 mA to 2 A, depending on the transistor with the TTL or...
Wide Dynamic Range Light Detector (CB12527E)
The circuit shown in figure uses a photodiode as a sensor element and its main feature is to have...