Of course, the current is extremely small, but a voltage of 300 V can be obtained from 9 V of a battery. The circuit is from an Electronics Now of May 1994. C1 adjusts the operating point.
Found in old American documentation, this receiver transmits signals via the power grid. We can...
This is a project that can easily be adapted for other purposes such as counting people, objects,...
We found this circuit in an English publication from 1969. It shows how we can implement a bridge...