This circuit was found in a 1980s documentation for amateur radio. The circuit is for 9 MHz signals and values in parentheses for FI of 455 kHz. The circuit can be adapted to other frequencies.
This circuit was found in a 1958’s publication. It uses germanium transistor, availble that time....
This clipper or limiter circuit limits the amplitude of AM or FM audio signals. The diodes are...
This amplifier became famous in the 1970s, it was sold in kit by Ibrape, Philips subsidiary for...