REFLECTOR:Panel warning/indicatorlights
Joe
reflector@tvbf.org
Tue, 20 Apr 2004 22:34:18 -0400
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Al,
Most LEDs operate in the 3 to 5 Volt range. If applied to a 12 Vdc =
circuit, a dropping resistor will be needed. As noticed on trucks and =
traffic lights lately, packaged LED are becoming popular as well as =
economical. Sunbrite (available from Mouser.com) is one manufacture =
that has packaged LEDs with dropping resistors in a miniature bulb form. =
This can then be used directly in a panel indicator intended for bulbs =
with the reliability of LEDs.
I have been toying with annunciators/push button switches (for use in my =
home made AP, engine monitor, and for my GPS). The most economical I =
have found is Omron A16 series switches (Digikey$13.61 for the =
PB/Indicator and $8.16 for the indicator only.) These are listed for =
24Vdc, but the LED indicator lamp can be replaced with a 12V LED package =
for about $3.00. These units take about 3/4" X 1" or 3/4" X 3/4" of =
panel space, I am planning on using Brother lettering tape to make the =
legend plates, which fit under the cover plate. This should give a =
professional looking annunciator.
Joe
----- Original Message -----=20
From: Al Gietzen=20
To: reflector@tvbf.org=20
Sent: Tuesday, April 20, 2004 1:12 PM
Subject: REFLECTOR:Panel warning/indicatorlights
I have a total of about 11 green, yellow, and red indicator lights on =
my panel design for various alerts and circuit indicators. I'd =
appreciate some input on what to use. Seems LEDs would be the way to go =
- less likely to burn out then lamps. Being electronically challenged =
in certain areas, I'd have a hard time choosing from all the LEDs in the =
Digikey catalog. Is there a type that takes 12v, or do I need resisters =
in series, or a transformer.
BTW; they are set up so none of them are on when in normal flight =
status. =20
Thanks,
Al
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<DIV><FONT face=3DArial size=3D2>Al,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Most LEDs operate in the 3 to 5 Volt =
range. =20
If applied to a 12 Vdc circuit, a dropping resistor will be =
needed. As=20
noticed on trucks and traffic lights lately, packaged LED are becoming =
popular=20
as well as economical. Sunbrite (available from Mouser.com) is one =
manufacture that has packaged LEDs with dropping resistors in a =
miniature bulb=20
form. This can then be used directly in a panel indicator intended =
for=20
bulbs with the reliability of LEDs.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I have been toying with =
annunciators/push button=20
switches (for use in my home made AP, engine monitor, and for my =
GPS). The=20
most economical I have found is Omron A16 series switches (Digikey$13.61 =
for the=20
PB/Indicator and $8.16 for the indicator only.) These are listed =
for=20
24Vdc, but the LED indicator lamp can be replaced with a 12V LED package =
for=20
about $3.00. These units take about 3/4" X 1" or 3/4" X =
3/4" of panel=20
space, I am planning on using Brother lettering tape to make the legend =
plates,=20
which fit under the cover plate. This should give a professional =
looking=20
annunciator.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Joe</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=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=3DALVentures@cox.net href=3D"mailto:ALVentures@cox.net">Al =
Gietzen</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> Tuesday, April 20, 2004 =
1:12=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> REFLECTOR:Panel=20
warning/indicatorlights</DIV>
<DIV><BR></DIV>
<DIV class=3DSection1>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Verdana">I have a total of =
about 11=20
green, yellow, and red indicator lights on my panel design for various =
alerts=20
and circuit indicators. I=92d appreciate some input on what to =
use. =20
Seems LEDs would be the way to go =96 less likely to burn out then =
lamps. =20
Being electronically challenged in certain areas, I=92d have a hard =
time=20
choosing from all the LEDs in the Digikey catalog. Is there a =
type that=20
takes 12v, or do I need resisters in series, or a=20
transformer.</SPAN></FONT></P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: =
Verdana"></SPAN></FONT> </P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: Verdana">BTW; they are set up =
so none of=20
them are on when in normal flight status. </SPAN></FONT></P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: =
Verdana"></SPAN></FONT> </P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: =
Verdana">Thanks,</SPAN></FONT></P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: =
Verdana"></SPAN></FONT> </P>
<P class=3DMsoPlainText><FONT face=3DVerdana size=3D2><SPAN=20
style=3D"FONT-SIZE: 11pt; FONT-FAMILY: =
Verdana">Al</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>
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