My first attempt at wireless transmission with a spark gap coil. Just to give you a little background I built the ZVS coil in an attempt to get some more amps out to the receiver however creating arcs was way too much fun. That's a tiny bit too much power for my little shed. I see no reason why I can't turn it down so perhaps I'll try that next but for now I've gone old skool and got the flyback driver I replicated a while ago.
Learning how to tune the ZVS has allowed me to go back to the earlier flyback driver running on two 12v batteries and tune up the coil out of my old bipolar slayer without any trouble really. I really did learn a lot from the Telsa Explorer and his style of tuning with the MMC cap back.
Point(s) I'm trying to make are that I seem to be able to tune my receiver using the spark gap. I first setup the receiver with a bulb sticking in the topload and no ground. I found the sweet spot so the bulb would light at about 5ft. I then connected up the rectifier with the motor, connected a ground to the secondary and slowly moved the receiver tower towards the SGTC. The tuning sweet spot is with no breakout as normal. As soon as I open up the gap I loose power which seems to me I'm tuning out the receiver.
I noted the Hz on my meter at around 19khz last night, this morning with the conductive ink I notice it around 5khz, however it's just a cheap multimeter with a Hz setting on it. The way to go seems to be with a scope but for now these ball park figures might show us "something", some pattern. It appears the conductive ink might be helping, it certainly allowed me to fine tune the receiver much more easily.
I want to try the ZVS driver next as I think on lower power I can driver for longer without worrying if the transistor is cooking ( or get a bigger heatsink).
I hope you find that interesting anyways,
cheers all.
