This version of triac control is from a 1968 documentation. The circuit uses components from the era that can be replaced with modern equivalents.
One 4018 is used to divide the frequency of a digital signal by ten as shown here. The maximum...
This circuit produces low frequency sinusoidal signals. The circuit is a phase shift oscillator...
This circuit was found in an old manual and can be applied to any operational amplifier. The power...