This circuit was found in an old documentation, being able to generate signals of frequencies in the range of 50 to 100 MHz. The components are of the time.
This preamplifier is recommended by Sanyo and is based on its LA3160 integrated circuit. The...
This circuit, obtained in a 1981 English magazine, is nothing more than a sound switch. Placed near...
We found this circuit in an old publication from Argentina. The relay must be of the sensitive type,...