This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz. FET is old, but modern equivalents can be used.
This circuit was found in a 1974 publication. It provides a tone indication of the temperature sensed by...
This circuit is intended for communications receivers. We can find it in a documentation from the...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...