Re: Weller WTCPT tip not hot enough
- From: Jeff Liebermann <jeffl@xxxxxxxxxx>
- Date: Sun, 24 Aug 2008 11:05:19 -0700
On Sun, 24 Aug 2008 07:06:21 -0700, "William Sommerwerck"
<grizzledgeezer@xxxxxxxxxxx> wrote:
Does this unit have a temperature-calibration pot?
No. The Weller WTCPT has no controls or adjustments. The primary
temperature determining component is the curie point of the magnet in
the tip. At low temperatures, the magnet holds a piston, which pulls
a pair of relay type contacts closed, which then runs the heating
element. When the tip temperature reaches the curie point, the
magnetism disappears, opening the contacts. There's nothing in the
contact assembly that would affect the temperature, except perhaps if
the piston were stuck. That's unlikely because of the huge clearances
involved. If it's cycling, then only the tip can affect the
temperature threshold.
Weller manuals:
<http://bama.sbc.edu/weller.htm>
WTCPT manual:
<ftp://bama.sbc.edu/downloads/weller/wtcpt/> (215KB)
See section on "Principle of Operation".
--
Jeff Liebermann jeffl@xxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.
- References:
- Re: Weller WTCPT tip not hot enough
- From: Samuel M. Goldwasser
- Re: Weller WTCPT tip not hot enough
- From: William Sommerwerck
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