mini mill battery charger wiring help

Author Message
alan g

Newbie

Joined: 28/09/2005
Location: United Kingdom
Posts: 3
Posted: 07:21pm 27 Sep 2005      

Hi, does anyone know how to wire up the mini mill battery charger.  I can see the vero board and all the connections but haven't really got a clue as to what goes where.  How do I determine the correct wire coming from the stepper motor and to what pin does it connect to on each rectifier? Maybe if the vero board was flipped I might be able to tell.
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5199
Posted: 02:23am 28 Sep 2005      

Hi Alan

Just about every stepper I've seen has different colour wire combinations, its just about impossible to say how to connect it up. But what I did was measure the resistance between the windings to work out which wires connect to the coils, and then I spun the windmill by hand and measured the output voltages. It took a while, but I found the combination that made the most power.

http://www.thebackshed.com/Windmill/assemblyMini3.asp

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ
Chris

Senior Member

Joined: 12/09/2005
Location: Australia
Posts: 146
Posted: 12:54am 12 Oct 2005      

It wont matter which wires you run into the stepper motor if its a 4 wire motor, as your running them into a rectifier. The rectifier will take a negative voltage and send it to the negative output, doesnt matter which wire it comes from. Thats assuming you wire up your rectifier correctly. 
Storm

Regular Member

Joined: 12/09/2005
Location: Australia
Posts: 43
Posted: 08:04am 12 Oct 2005      

Cheeck this site out, may give you the info you need.

http://www.c-realevents.demon.co.uk/steppers/stepmotor.htm
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5199
Posted: 09:15pm 12 Oct 2005      

Hey Storm.

Thats a good link. I'll add it to the Links page.

Thanks.

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ
alan g

Newbie

Joined: 28/09/2005
Location: United Kingdom
Posts: 3
Posted: 05:42pm 13 Oct 2005      

Thanks storm that site's great, I think I shall be alright with it now. I understand why steppers are more suitable for this kind of application also.

Thanks to everyone else who posted.