[Laser] Kicking up the power?

[C. Turner]

Hi Kurt,

I might suggest those diagrams found here:

http://modulatedlight.com/optical_comms/LED_linear_modulator.html

This circuit and various permutations have been used for a number of 
things - notably the 1-2 amp Luxeons, multi-LED arrays for a 
scanning-disk TV at 10's of kHz, and even extremely high-power (20+ amp) 
LEDs/arrays.

Clint
KA7OEI


> Message: 3
> Date: Mon, 27 Dec 2010 21:10:00 -0800
> From: "KD7JYK DM09"<kd7jyk at earthlink.net>
> Subject: [Laser] Kicking up the power?
> To: "Free Space LASER Communications"<laser at mailman.qth.net>
> Message-ID:<002a01cba64d$80e0f470$4da0f604 at mainframe>
> Content-Type: text/plain;	charset="iso-8859-1"
>
> I have several infra-red audio transmitters.  They are dual channel, two
> near-IR LEDs per channel.
>
> How can I use these to drive a larger array that may draw several amps?
>
> Each channel has a common ground, then a left and right trace from the
> modulator.  Anyone have any high current driver schematics or ideas?
>
> The transmitters already have modulators and low-power drivers to feed the
> four LEDs, I need a way to get the audio/carrier into a LOT of LEDs.
>
> Thanks.
>
> Kurt
>
>