We found this circuit in a Radio Electronics from October 1963. The circuit uses an output transformer with a center tap. The trimpot is adjusted for higher gain and lower quiescent current.
This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it...
This circuit was obtained in a documentation from the 1970s. What it does is to delay trigger a...
In the figure we have an anti-ring or debouncer circuit with 555. The duration of the pulse is...