In the figure we have 3 oscillators with logic gates that can be triggered by external logic signals. The circuits were found in the Radio Electronics magazine of April 1987.
This circuit, which uses an unusual integrated, is from the Motorola Linear Databook of 1990....
This circuit is used to test an inductor (coil) allowing the observation of its opration in an R-L...
This analog to digital converter was obtained from an American documentation from the 90s. Used...