This 10 A solid state relay was found in a 1980s documentation. It can work as a shield and implemented with modern equivalent transistors.
In the figure we have a circuit that allows us to obtain a variable voltage of approximately 0.5 to 25 V...
We found this circuit in recent English documentation. The frequency is adjusted by the core of...
This interesting circuit, found in an old American publication, measures alternating signals in a...