The gain of this amplifier is given by the components indicated in the formulas next to the diagram. The power supply must be symmetrical and equivalent operational amplifiers can be used.
This booster for listening to signals in the range from medium waves to 30 MHz was found in a 1998...
In the figure we show our first circuit that consists of a simple touch switch capable of driving a...
Using a 7400 we have a short-wave transmitter from 4 to 9 MHz, shown in the figure. The coil...