[sdiy] Improving LED response when driven from half-wave rectifier

[Neil Johnson]

Hi,

Tim Ressel wrote:
> I use a modified Howland Current Pump to drive LEDs, especially bi-color.
>
> Here is the schematic:
> https://dl.dropbox.com/u/5536133/led_driver1.pdf

Well, I guess if you like complexity...

You can do it with an op-amp and single resistor if you're ok with the
LED fully floating.

Neil
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