R
Ross Herbert
- Jan 1, 1970
- 0
On Sun, 18 Feb 2007 15:55:19 +1100, "Phil Allison"
Phil, I will respond only to your comment regarding what Iposted in my
first response. Everything else snipped.
The fact is that R-Core transformers ARE inherently safe for use in
medical equipment due to the isolation properties of the R-Core
bobbin. This does not mean that split-bobbin types on E-I transformers
cannot be safe for such use. Other factors related to the R-Core
design and winding arrangement do make these transformers a better
choice for such equipment when compared to E-I.
R-Core bobbins are far more complex than a split-bobbin for an E-I
transformer, thus contributing to greater cost for this type. The
interleaved windings using an isolating barrier contibutes to better
coupling and lower noise than an E-I but at greater overall cost of
manufacture.
I have posted links on ABSE to pics of a typical R-Core bobbin. If you
want more I can post them as well.
Phil, I will respond only to your comment regarding what Iposted in my
first response. Everything else snipped.
** Naturally - in order to correct the error YOU posted then later tried
to fallaciously prove was right.
This one:
" I have seen mains transformers of this type in only a few items of
equipment. Usually more expensive than other more common types but P -
S isolation is absolute and makes them very safe for medical
equipment."
Grow up - Ross.
The fact is that R-Core transformers ARE inherently safe for use in
medical equipment due to the isolation properties of the R-Core
bobbin. This does not mean that split-bobbin types on E-I transformers
cannot be safe for such use. Other factors related to the R-Core
design and winding arrangement do make these transformers a better
choice for such equipment when compared to E-I.
R-Core bobbins are far more complex than a split-bobbin for an E-I
transformer, thus contributing to greater cost for this type. The
interleaved windings using an isolating barrier contibutes to better
coupling and lower noise than an E-I but at greater overall cost of
manufacture.
I have posted links on ABSE to pics of a typical R-Core bobbin. If you
want more I can post them as well.