REFLECTOR:Looking for suggestions about fire detection

Ronnie Brown reflector@tvbf.org
Sun, 18 May 2003 08:53:42 -0400


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Wayne.

How about a part number?  I did a search on Thermal at Digikey and got no response.

THANKS!
Ronnie

----- Original Message -----
From: Wayne Owens
To: reflector@tvbf.org
Sent: Saturday, May 17, 2003 6:12 PM
Subject: Re: REFLECTOR:Looking for suggestions about fire detection


I used Thermal fuses (from Digi-Key) in a string (series) around likely hot spots. One end is grounded and the
other end is tied to the anode of a flashing red LED (also Digi-Key)on my annunciator panel. The LED anode is
fed from a resistor tied to positive voltage (cathode is grounded) but the fuse string keeps the anode low
until one of them blows (overheats). That allows current to flow through the flashing LED to ground.
 You should insert a normally closed "press to test" switch in the string also.
Wayne
  ----- Original Message -----
  From: PVTPIL8@aol.com
  To: reflector@tvbf.org
  Sent: Saturday, May 17, 2003 4:18 PM
  Subject: REFLECTOR:Looking for suggestions about fire detection


  I've got the fire suppression worked out now were looking for the early detection. Anyone have some
suggestions.  Wayne or Scott??

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<DIV><FONT size=3D2>Wayne.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>How about a part number?&nbsp; I did a search on =
Thermal at=20
Digikey and got no response.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>THANKS!</FONT></DIV>
<DIV><FONT size=3D2>Ronnie</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV style=3D"FONT: 10pt arial">----- Original Message -----=20
<DIV style=3D"BACKGROUND: #e4e4e4; font-color: black"><B>From:</B> <A=20
title=3Dwamowens@bellsouth.net =
href=3D"mailto:wamowens@bellsouth.net">Wayne=20
Owens</A> </DIV>
<DIV><B>To:</B> <A title=3Dreflector@tvbf.org=20
href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
<DIV><B>Sent:</B> Saturday, May 17, 2003 6:12 PM</DIV>
<DIV><B>Subject:</B> Re: REFLECTOR:Looking for suggestions about fire=20
detection</DIV></DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>I used Thermal fuses (from Digi-Key) in =
a string=20
(series) around likely hot spots. One end is grounded and the other end =
is tied=20
to the anode of a flashing red LED (also Digi-Key)on my annunciator =
panel. The=20
LED anode is fed from a resistor tied to positive voltage (cathode is =
grounded)=20
but the fuse string keeps the anode low until one of them blows =
(overheats).=20
That allows current to flow through the flashing LED to =
ground.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;You should insert a normally =
closed "press to=20
test" switch in the string also.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Wayne</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3DPVTPIL8@aol.com =
href=3D"mailto:PVTPIL8@aol.com">PVTPIL8@aol.com</A>=20
  </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
  href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, May 17, 2003 =
4:18=20
PM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> REFLECTOR:Looking for=20
  suggestions about fire detection</DIV>
  <DIV><BR></DIV><FONT face=3Darial,helvetica><FONT lang=3D0 =
face=3DArial size=3D2=20
  FAMILY=3D"SANSSERIF">I've got the fire suppression worked out now were =
looking=20
  for the early detection. Anyone have some suggestions.&nbsp; Wayne or=20
  Scott??</FONT> </FONT></BLOCKQUOTE></BODY></HTML>

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