This circuit was obtained from a 1967 GE SCR manual. It is intended for controlling relays responding to a decrease or increase in temperature.
This ttransistor test was found in a 1987 documentation. It is a simple oscillator that allows to...
This circuit was found in documentation from the 90s. Its purpose is to dial a programmed number...
We found this amplifier with high input impedance and low capacitance, using FET, in a...