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Check out this interesting wideband AC millivoltmeter circuit from 1990. The simple design features 12 ranges, decent accuracy, 200 µV accuracy, and a frequency range from 20 Hz to more than 2 MHz.

During the last 5 years I have posted a couple of projects on Elektor Labs, which have 2 things in common: They use a member of the PIC12F microcontroller family There is no PCB, because a left over ...

Here is a VLF receiver tuned to 300 kHz designed to detect the crackle of approaching lightning. A bright lamp flashes in sychrony with the lightning bolts indicating the proximity and intensity of ...

When working around mains voltages, it can be useful to know whether a given circuit is live or not. While this can be done by direct connection with a multimeter, non-contact methods are available ...

In 2021, Elektor celebrated its 60th anniversary. During the year, we took the opportunity to dive deep into our archives and to talk to many of the electronics enthusiasts who have been loyal to ...

Circuits are beautiful in their own way, and a circuit sculpture takes that abstract beauty and makes it into a purposeful art form. Can you use the wires of the circuits themselves as the structure ...