Suggested by General Electric, this circuit with triac is able to reverse the rotation of a motor through a DC control signal. The circuit applies to AC servos.
This filter, from an audio publication from 1977, passes the frequency range corresponding to the...
In the figure we have three voltage doubler configurations that can be used in high and low...
This circuit was found in Motorola documentation from 1966. The lamps are according to power and...