The purpose of this circuit is to check the linearity of SSB amplifiers. The circuit was found in an old documentation for hams. The diode is a general purpose detector type.
We can also use the 4011 on this CMOS circuit that makes use of a crystal headset. The power...
This small transmitter can send its signals to a receiver placed at distances up to 100 m. The...
This interesting circuit that can use modern equivalent transistors like the BF245 and BC548 was...