Electrical schoolwork...

[Stephen Kormilo]

At 01:18 PM 10/02/04 -0500, quattro-request at audifans.com wrote:

>Date: Tue, 10 Feb 2004 11:06:42 -0500 (EST)
>From: Kurt Deschler <desch at alum.wpi.edu>
>Subject: Re: Electrical schoolwork...
>To: Louis-Alain RICHARD <laraa at sympatico.ca>
>Cc: quattro at audifans.com
>Message-ID: <Pine.LNX.4.58.0402101055230.27585 at cs.wpi.edu>
>Content-Type: TEXT/PLAIN; charset=US-ASCII
>
>If there is more than one bulb to replace, you would be better off placing
>the multiple LEDS in series and using a single resistor for the remaining
>voltage drop.  That would both the power dissipated by the resistor, save
>you space, and draw less current. My theory is that the next generation of
>plug and play LED-based light bulbs will use a configuration like this.
>
>As an example, 4 20mA 2.5 V LEDS in series:
>(13-2.5*4) = 3V
>3/.02 = 150 ohms
>3*.02 = .02 W
>
>         -Kurt

A good idea, the only 'caveat' being troubleshooting if one of the LEDs 
burns out or the circuit goes 'open' somewhere, like the strings of 
low-voltage Christmas tree lights ;-)


Stephen Kormilo
Winnipeg, MB
CANADA

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email: skormilo at rrc.mb.ca
OR
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