REFLECTOR:Panel warning/indicatorlights
Alex Balic
reflector@tvbf.org
Tue, 20 Apr 2004 14:42:44 -0500
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Al,
You always need to use a resister with an LED, it is not resistive itself
(it is after all just a special diode) different LED's have different
voltage requirements, but all are below 12v, you will need to see what your
particular one is and then use the correct resister to complete the circuit.
You can run them in parallel or in series.
Alex
-----Original Message-----
From: reflector-admin@tvbf.org [mailto:reflector-admin@tvbf.org]On Behalf
Of Al Gietzen
Sent: Tuesday, April 20, 2004 11:13 AM
To: reflector@tvbf.org
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.
Thanks,
Al
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<DIV><SPAN class=799164019-20042004><FONT face=Arial color=#0000ff
size=2>Al,</FONT></SPAN></DIV>
<DIV><SPAN class=799164019-20042004><FONT face=Arial color=#0000ff size=2>You
always need to use a resister with an LED, it is not resistive itself (it is
after all just a special diode) different LED's have different voltage
requirements, but all are below 12v, you will need to see what your particular
one is and then use the correct resister to complete the circuit. You can run
them in parallel or in series.</FONT></SPAN></DIV>
<DIV><SPAN class=799164019-20042004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=799164019-20042004><FONT face=Arial color=#0000ff
size=2>Alex</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> reflector-admin@tvbf.org
[mailto:reflector-admin@tvbf.org]<B>On Behalf Of </B>Al
Gietzen<BR><B>Sent:</B> Tuesday, April 20, 2004 11:13 AM<BR><B>To:</B>
reflector@tvbf.org<BR><B>Subject:</B> REFLECTOR:Panel
warning/indicatorlights<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana">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.</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana">BTW; they are set up so none of
them are on when in normal flight status. </SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana">Thanks,</SPAN></FONT></P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana"></SPAN></FONT> </P>
<P class=MsoPlainText><FONT face=Verdana size=2><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: Verdana">Al</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>
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