B21126E)
This circuit was taken from an old Popular Electronics. The circuit can have its frequency changed from an external signal. The center frequency is given by C1.
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...