Muller Dynamo

[joefr]

Here are some calculators for litz wires:

http://www.elektrisola.com/litz-wire/technical-data/formulas.html

http://www.hmwire.com/calculations.html

http://www.litz-wire.com/wirediminsions.html


and coils:
http://www.daycounter.com/Calculators/Coil-Physical-Properties-Calculator.phtml

[toranarod]

PIC? That should do nicely.

By bringing the Hall effect sensor into a discrete input on the PIC, you can use it as a simple reference and synthesize the actual drive pulses anywhere you want to put them. That should give you a big advantage when tuning.

if I can supply more info on this please email me. It works very well at fine tunning any pulse motor. I have a pdf description of it function. 

[romerouk]

Hi all,
i see that many questions are about the resistance of the coil.
I don't have the generator at home but as I remember I maeasured it few day ago it was arround 1.7-2 ohms.I have removed one of the pair coils and replaced with a larger one and that has improved the system.

[REDCAR1957]

I am about to get another rotor manufactured. as you know the cost is in the tooling so I pay for one is expensive.
so i can have more than one made. If any body is interested please say as I will just get them to do a few more. you will get them for the cost of what they cost me. and  postage.

this is for a rotor the dimensions are on the drawing

toranarod
how much are these rotors going to cost?
let me know when you find out
Kevin

[bolt]

Hi all,
i see that many questions are about the resistance of the coil.
I don't have the generator at home but as I remember I maeasured it few day ago it was arround 1.7-2 ohms.I have removed one of the pair coils and replaced with a larger one and that has improved the system.

I have removed one of the pair coils and replaced with a larger one and that has improved the system.

Very important statement as i have reiterated many times too many people getting hung up on precise replication of the coils when its the METHOD that is important not the replication.