desch at alum.wpi.edu
Tue Feb 10 16:09:27 EST 2004
The LED is not neccesarily more efficient considering you are sinking all
that power into heat through the resistor.
A 194 bulb is pretty efficient at 14V 27mA 2CP.
LED could be more or less efficient depending on your choice of
color and material. Range from .045-10CP @20mA in this table:
On Tue, 10 Feb 2004, Brendan K. Walsh wrote:
> You could rewire so they run in parallel rather than series, but that would
> change the current draw on your source. Consideration should be given to the
> capacity of the source gauge then,wouldn't want to start any fires.On the
> other hand, LED's should draw less current than bulbs. .02
> "If God had intended us to walk he wouldn't have invented roller skates."
> Gene Wilder, Willy Wonka and The Chocolate Factory.
> ----- Original Message -----
> From: "Huw Powell" <audi at humanspeakers.com>
> To: "Kurt Deschler" <desch at alum.wpi.edu>
> Cc: <quattro at audifans.com>
> Sent: Tuesday, February 10, 2004 2:50 PM
> Subject: Re: Electrical schoolwork...
> > > If there is more than one bulb to replace, you would be better off
> > > the multiple LEDS in series and using a single resistor for the
> > > voltage drop.
> > The only trouble with that, besides having to rewire everything, is that
> > if one LED dies, you lose all the LEDs on that "chain."
> > --
> > Huw Powell
> > http://www.humanspeakers.com/audi
> > http://www.humanthoughts.org/
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