Suggested for the control of photographic enlargers, this 1967 General Electric circuit uses still common components. The circuit directly controls a lamp for exposing negatives.
This bistable or flip-flop is triggered by a negative pulse applied to the collector of the...
In the figure we have a typical polarization circuit for MOSFETs with a high impedance...
This simple circuit can be used as audio output stage for intercoms, experimental radios and other low...