Split it [RE-wrenches]
jay peltz
jay at asis.com
Fri Jan 26 16:07:15 PST 2001
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
>
> - - - - - - -
> 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
- - - - - - -
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
More information about the RE-wrenches
mailing list