Split it [RE-wrenches]

[jay peltz]

Hi S,

Thanks for the hard answer.  See my response to tom Elliot.  I would love to see
modular units, ( I don't think easily done with Tformers but easy with fets).

Thanks again and have a nice weekend,

jay

"R. Sparks Scott" wrote:

>         Jay;
>
>         From an engineer's standpoint, nothing replaces iron and copper. The
> transformers in an inverter are the flywheel that stabilizes the entire
> operation. Where sine-wive power is concerned, the hysterisis in an
> iron-core transformer is a perfect match for the attack and decay of
> waveforms, helping to smooth the sine wave, and moderating instantaneous
> current changes induced by the load. Iron core transformers are resilient
> to overloads, slow to heat (and cool), and shake off short circuits.
>         The unfortunate side effect of this is eddy currents, copper loss and
> variable efficiency dependent upon load. Damn those trade offs.
>         Correct me if I'm wrong, but do any of the Statpower high-frequency
> inverters offer battery charging? Sure, a bi-directional hi-freq circuit is
> possible, but more complicated, delicate and would amount to two
> independent devices in one cabinet. Add to this that a hi-freq inverter is
> two inverters in one anready: ( DC to hi-freq AC / step-up to 120 / rectify
> to DC / invert to 120 AC 60 Hz). The charger would have to: (120 AC /
> rectify to DC / invert to hi-freq AC / step down to battery voltage /
> rectify to DC).  Lots of mucking about for my taste. Too many active
> components in the high voltage path. The only component the two circuits
> might share would be the hi-freq transformer?
>         When it's time to pound nails, give me a 20 ounce, waffle-faced,
> fiberglas-handled framing claw hammer. Inverters? I'll take the copper and
> iron every time.
>
>         -S
>
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To send a message:
 RE-wrenches at topica.com

The archive of previous messages: 
 http://www.topica.com/lists/RE-wrenches/

To unsubscribe send a message to: 
 RE-wrenches-unsubscribe at topica.com

To check out the other RE-Wrench participants:
 www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine: 
 www.homepower.com

For info contact list moderator by email:
 michael.welch at homepower.com

____________________________________________________________
T O P I C A  -- Learn More. Surf Less. 
Newsletters, Tips and Discussions on Topics You Choose.
http://www.topica.com/partner/tag01