>
>
> Under $US25 in modest quantities fully built FOB Taiwan :-)
>
> !!!!!!!!!!!
>
>> The brake drum alternator is also "optimized" to output
>> substantial
>> current at 500 RPM or less. You need a lot of magnetic
>> force to do this.
>> There hasn't been anything new done to motors in 100
>> years, yes I'm
>> trolling, but honestly the only new thing is nicer
>> materials and
>> different methods of commutation.
>
> Largely nothing too too new.
> Some good stuff can be done with ironless designs due to
> reasonably well priced high flux magnets. But the alternator
> in my picture is largely a common sense combination of old
> technology to produce a highly effective product. Take a
> look at the laminations - standard off the shelf components
> produced in vast volume. You  have probably walked under
> many similar ones over the years as the motors they are used
> in went aboutv their slow and silent business.
>
>
>         Russell

To Russell
Maybe this is asking too much.........
1) What kind of permanent magnet alternator do you get from Taiwan  
for $25 ? output ? and at what kind of quantities ?  1000 pc 10K pc ??
2) The 1KW alternator your friend is developing ?   Will it be made  
available ? What is the voltage output curve and power vs RPM ?

Best
cc
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