Recent content by khblue

I think the specifics of the magnet winding must be a key element to making this work. A relay winding has about 150 ohm resistance and so will draw about 80mAmps from a 12 volt battery. But A23 12volt batteries only provide about 15mAmps peak. The 3volt battery in the BadAss wouldn't produce...

@theflx Have you had it working on the bike ? Which bike ? Thanks

Hi @Festivejelly @IR772 Quick update. Just tested relay MT2-C93401 in the lab with a power supply. I can get a field of 12mT out of that relay with a 15volt supply, which is 4 times more than I had from my drill wound option, but doesn't reach the 40-50mT at the bike's hall sensor from the...

Hi @Festivejelly @IR772 So my circuit works, but not the coil magnet. I'm a physicist so have a calibrated Hall sensor. The magnet on the bike produces 40 to 50my at the bike sensor. The most I get out of my coil magnet with hundreds of windings, only 6mm tall to fit between spokes and sensor...