E)
This soft start dimmer was found in a Motorola documentation from 1968. However, it can be implemented with modern equivalent components like the 2N2646 for the Unijunction.
In the figure we have a simple way to obtain (almost) sinusoidal signals from an integrated...
Originally suitable for photography applications, this circuit from a Popular Electronics from the 90s can...
This circuit uses an optocoupler with a phototriac or optotriac to drive an external triac. The...