Muller Dynamo

[mariuscivic]

Ooops! i did it again. 

I mounted other 2 coils today. Doing that i had to take apart the sistem and then put it back togheter. Now can't find the sweat spot for the coils to ring.They still produce around 40V each but yesterday, when i had only 2 coils, one of them produced 76V and the other one 65 vhen ringing. Also , the dso nano arived today with a small problem; the on-off button doesn't work(it stays always on)  . I talked to the guy and said that he will send me another one next week.
I'm going back to wound some other coils

[DeepCut]

@ Chal and wings, thanks for advice and links

@ Marius, hope you find the sweetspots again ! Those nanos look really nice.

[DeepCut]

I've been looking at the isolator, which is great for protecting the PC.

But what about something in between a home-made scope probe and a USB sound module, so that i could measure higher voltages without blowing the USB sound module ?

Or is it just a question of how the scope probe is made ?

[mariuscivic]

Hi DeepCut

Wanna see my old probe that i used for pc? Don't laugh too hard...   looks like from the stone age anyway
I also set the mic to level 1 of 100

Found a nice shot above the driving coil. I connected the nano's probe to an another coil and then i put it above the driving coil.

[DeepCut]

Man i'm jealous ! That nano looks sweeeet

I've made my probes out of multimeter probes and put them both in a box, the red is the new HV probe i just finished after three hours and the black is the low-voltage one.

Here is a shot of it in action, the red square wave is my LV probe and the green is the HV one.

My sine-wave looks a bit dirty, though. Marius, is that the old probe you used on the shots you posted before you got the nano ? If so please tell me the circuit because you had nice, clean shots, thanks