This circuit for analog TV was found in a 90s EDN. The integrated circuits used are from that time and may present some difficulty in obtaining.
We found this circuit in a 1976 documentation. The circuit uses a double gate MOSFET. The circuit...
We found this circuit in a Popular Electronics of the 90s. Its purpose is to detect when it locks...
Carbon microphones are no longer used in most projects. However, finding one in the scrap metal, it...