First electrical power output from a Pyramid

[skywatcher]

The thickness of wire in the coils ha s not actually been specified[unless someone knows better.] and so may not be critical.

I remember a number of 2.5.   
I don't remember if it was 2.5 mm² or 2.5 mm diameter of the wire (but most likely: 2.5 mm²).

[atlantex]

Hi,

in German, we are using mm? for cable diameters.

btw. how are the cabels connected to the graphid sticks ?


Best regards,

atlantex

[duff]

 

[neptune]

I have not yet connected my cables to the graphite. The problem is that graphite breaks easily. This is my plan. Do not connect coil wire directly to graphite. Use a short piece of flexible cable which is made of many thin wires.remove insulation for 20mm at the end. Spread out the thin wires around the end of the graphite stick , and bind them with many turns of cotton or nylon thread. Now join the flexible cable to the coil wire with solder. that is my plan.

[skywatcher]

If you use these welding electrodes which have graphite inside (and copper outside) you can leave the copper at the end of the electrode (and remove the rest of the copper). You can then solder any cable to this copper.

But i didn`t find any source for this electrodes yet. Even stores who sell welding supplies don't have them.   

Here is such an electrode, but it's far too thick for our purpose: Click me