hello everyone,
today i rewound my SG coil to get about 600-700 windings on there. And used an AM antenna ferrite core to see what would happen.
SG charges A LOT better, but current draw has gone up from 70mA to 200mA I did add a potmeter to the trigger resistance to get it down, but that's as low as i can go.

When i attach a neon bulb to charge output it nearly blows the bulb.
But i also noted a weird side effect, when the rotor isn't turning the coil makes a high lets say 3khz buzzing noise, when i then change the resistance on the potmeter the frequency of the noise changes.
This didn't happen with my first coil.

any idea's?