This 80's circuit can be implemented with modern equivalent FETs with lower on resistance. The attenuation is 80 dB at 100MHz.
This circuit was found in a 1995 documentation. Its purpose is to indicate voltage levels that are...
This circuit can test quartz crystals from 3.5 to 90 MHz. Its supply can be made with voltages from 8...
We have here a very interesting project found in a 1982 publication. By the operation of the...