Re: Re ATM Electric Morors

[Andrew Grisdale <roadwarrior@techieguy.com>]

Hi Peter,

> I have stripped down two items. The first is a motor from a "stand alone"
> two speed 5.25 in disk drive. The motor is about 2 1/4 in (57mm) diameter x
> 1/2 thick. It has 5 leads (yellow, white, orange, red and brown) and is
> labelled"type MSJE200A53 12 Volt DC and made by Sankyo Japan.
> Is this a stepper motor? If so would it be suitable for converting the Dob I
> am making for computer control at a later date?

That sounds rather like a stepper motor, see if there is any indication on it as to the 
number of steps per revolution, or the step angle, because you will need to know this. If 
you can't see anything on it, you will have to hand turn it and carefully count the 
steps.


> The second item is another motor from a Commodore 64 "Datasette". The only
> markings on the body are: "Silk Motor KA4093Y02". I don't know if this is AC
> or DC. Is there a simple test I can do to establish this easily and what the
> correct voltage is etc. Also any ideas for using it?
This sounds like a regular DC motor, if it has more than 2 leads, it may have 2 speeds or 
a forward and reverse, it is likely to have a well regulated speed, but is probably 
pretty weak. It will probably take somewhere around 5-6 v DC. You might be able to use it 
in an electric fine focusser.

UK surplus source...
www.greenweld.com
send them an e-mail asking for thier catalogue and to subscribe to their bargain list.

regards, 

Andrew G.


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