This FM receiver tuning step circuit was found in a 1960 documentation. No information about the coils is given, but the FI used at the time was 10.8 MHz.
Although it is made for old oscilloscopes up to a few megahertz, this circuit converts your device...
This electrochemical circuit monitors the conductivity of the oil indicating when to change it. The...
This circuit came out in a publication called Electronics Handbook of 1993. The circuit triggers an...