Re: LEDs in flashlights?

From: Watson A.Name \ (NOSPAM_at_dslextreme.com)
Date: 07/21/04 

Date: Wed, 21 Jul 2004 08:01:07 -0700

DaveC wrote:

> Such as this one:
>
> http://www.brightguy.com/detail.html?cart=1090077700192795&sku=OPA3W

> how are the LEDs configured? Are they paralleled? Each with a series
> resistor? Regulator?

> In this application, the source is 2.4-3.0 volts, depending on type of cell.
> Any idea?

I have two Opalec Newbeams installed in my mini maglites, and I use them
all the time.

The Newbeam is not focused, so turning the head of the maglite does
nothing but turn it on/off. There is a circuit encapsulated in epoxy,
so you can't see what's in the circuit. My guess is that there's a chip
in there and the three LEDs are in series. Buy one and find out.
Another model is the Techass MagmaLED which is a single LED, and it is
focusable. www.techass.com