This circuit is used in frequency meters to isolate the input output. The circuit is from old documentation. Equivalent operational amplifiers can be used.
This circuit causes the relay to be energized when the input voltage exceeds the voltage value of...
The maximum frequency of this circuit is 500 kHz. We found it in a documentation for radio...
The mains cables work as antennas. We can take advantage of them with this circuit that consists of a...