NewBie
*Retired*
This is an old boost supply I cobbled together quite some time back, snagged at random out of my box of them, when I was testing efficiency, it happens to be a MAX1709, which can handle up to 3.9V @ 4 Amps without problems.
Anyhow, I modified it with and attached a magetic field sensor, wired up a high power LED, and it works great.
In the future, I'll adjust the circuit for a wider dimming range, here it is doing 0.1 Amp to 1.5 Amp.
Here is my first go around:
http://www.molalla.net/~leeper/hipswmag.avi
The same principle applies to buck supplies also.
Anyhow, I modified it with and attached a magetic field sensor, wired up a high power LED, and it works great.
In the future, I'll adjust the circuit for a wider dimming range, here it is doing 0.1 Amp to 1.5 Amp.
Here is my first go around:
http://www.molalla.net/~leeper/hipswmag.avi
The same principle applies to buck supplies also.