[AT] LED lights

[pga2 at BasicISP.net]

I'll have to scan it and email it, Dick. It's in my Texas Instruments
Design Guide from 1976, about the size of a 3" by 5" index card. I can
resize it after I get it scanned and save it either as text or a PDF.
It shows the nominal current capacity and the fusing current as well,
which might be useful in certain applications.

Phil

--- ddss at telebeep.com wrote:

From: "DDSS" <ddss at telebeep.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Subject: Re: [AT] LED lights
Date: Mon, 10 Nov 2014 17:48:38 -0600

Phil, if you would not mind it, I would love to see that chart.  Or, if you 
can point me to a site that has it, that would be appreciated also.

Dick

-----Original Message----- 
From: pga2 at BasicISP.net
Sent: Monday, November 10, 2014 3:49 PM
To: Antique tractor email discussion group
Subject: Re: [AT] LED lights

I just replaced the 5 40 Watt lamps in the ceiling fan in my living room 
with
5 7 Watt led bulbs. That drops the consumption from 200 watts to 35 watts.
That alone will pay for the conversion in a pretty short time. The only down
side is that it takes about a minute for the led lamps to reach full 
brightness
and they were made in China. But then so were the lamps they replaced. :o(
Since you are looking at using them in a barn running on a 12V supply, there
will be some losses in the AC-DC conversion, but line losses shoule be 
minimal
if you use the appropriate gauge wire for the required current. I have a 
chart
I can scan and send you if needed.

Phil

--- ddss at telebeep.com wrote:

From: "DDSS" <ddss at telebeep.com>
To: "atis" <at at lists.antique-tractor.com>
Subject: [AT] LED lights
Date: Sat, 8 Nov 2014 12:41:22 -0600

The cost of 110-volt LED's is still pretty high and there doesn't seem to be
much available on high-output, at least that I could find.

I know they use 12-volt lights on boats and vehicles but am wondering why I
could not do the same in our barn.

There are quite a few 110v power supplies that output 12-volts DC.   saw one
that might work on Amazon...
http://www.amazon.com/Audiotek-Output-Mobile-Supply-AT-PS36/dp/B00DERSXWI/ref=sr_1_94?ie=UTF8&qid=1415469220&sr=8-94&keywords=12volt+power+supply
LED's draw about 3 watts each, so they really don't take a lot to power
them.

Has anyone done this?  I am not sure how much line loss there is with DC

Thank you.

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