Re: Need an Electrical Expert!


"Captain Howdy" <user@xxxxxxxx> wrote in message
news:xgGOf.23170$d9.9911@xxxxxxxxxxxxxxxxxxxxx
Your alternator already has a 14.5 volt regulator, so adding a 5 volt
regulator plus as resistor has the advantage of what, other then using a
lower
value of resistor? What is your point I'm all ears ? lol

From your attitude I doubt you'll care what I say, but a solid state voltage
regulater is a very common device used to deliver a fixed voltage. It will
provide a solid 5 volts to the led array regardless of how much the
alternator voltage goes up and down as the rpm change and the load changes.
As long as the input is greater than 5 volts, of course. The orignal poster
complained of the brightness changing as the voltage from his alternator
changed. This will solve the problem efficiently and solidly. A simple
resistor will not.

PD




In article <lTDOf.3755$CT.2148@trnddc04>, "Phonedude"
<fonedude@xxxxxxxxxxx>
wrote:

"MOSFET" <ntanner@xxxxxxxxxxx> wrote in message
news:zOKdnde3rIspnJbZnZ2dnUVZ_tKdnZ2d@xxxxxxxxxxxxxxxx
There is no such thing as a 12volt LED or a 3volt LED or an X, Y or Z
volt LED.

I am DEFINITELY no LED expert. But the package the Radio Shack LED came
in said 3 volt LED on the front, so that's what I'm calling it.


Go back to Radio shack and ask for a voltage regulator. It's a small
device
that will maintain voltage. You'll probably need that resistor as well.
As
the guys at Radio Shack (find the nerd) about it -- this is basic and at
least one of them should know it. Catalog price is $1.59 and it will
provide a constant five volts at up to 1 Amp in current. There are other
sizes/voltages available, but I think this one will do you fine. Here's
the
URL for the Radio Shack Catalog:

http://www.radioshack.com/product/index.jsp?productId=2062599&cp=2032058.203223
0.2032279&allCount=27&fbn=Type%2FIC-Analog&f=PAD%2FProduct+Type%2FIC-Analog&fbc
=1&parentPage=family

PD




.

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