This triac circuit was taken from an article in the July 1970 Radio Electronics magazine. Note the snubber formed by R5 and C3 for controlling inductive loads.
In fact, this circuit found in a Japanese publication from the 1960s will work with any...
This circuit was found in 1980s American documentation. The transducer is a piezoelectric capsule and the...
This circuit is based on a Texas Instruments LinMOS integrated circuit consisting of an...