We found this circuit in a 1998 documentation. It tests common household appliances to see if they are shorted by lighting an incandescent lamp.
May 2017 - Mouser Electronics is already stocked with ECS SMD crystals for frequencies in the 16...
The FET used can be an equivalent like the BF245 or MPF102 and the operational one also admits an...
This OF-1 LO oscillator was found in a 1980s American documentation. The transistor can be any...