I’ve been doinking around with the concept of a 55hz tank circuit to function as a voltage detector. It’s a fun idea to think about, but I decided to try to hang a little reality on it.
Reality is kind of a buzz kill sometimes.
Still, I present my failure, the electric toothpick.
It’s an LED, a 220uf capacitor, and a poorly executed coil. My understanding of inductance in the circuit is fuzzy, but improving. I was aiming for 38 mH, and I might have gotten close, but the ad hoc nature of the build makes that a little questionable. Regardless, I waved it all around the power cord for a 1500w heater running full bore and didn’t get a glimmer out of it at all.
The one thing I did learn, is that the H in 38mH stands for Henry, the unit of measurement for inductance. Which leads me to the conclusion that if you’re going to determine a fundamental measurement of electrical science your name really oughta be much cooler, like Ohm, or Volta.