Edward,

The LED is actually representative of a bunch of LEDs in series.
I can't get into too much detail, NDA issues, but I just turned the
power on
with no load connected and they "popped". I basically had the output
connected
to a DVM to verify it was switching, so no real load was on.

Steve

>>> gisske@OFFEX.COM 3/19/2004 10:05:03 AM >>>
Steve,

You need a current limiting resistor in series with the LED string.
The
value should be (Vs-Vled)/ILed where
Vs = source voltage (160V for you), Vled = roughly (2.1V) * (#of
leds).
ILed is the desired LED current. Try .02 for a start. Wattage of the
resistor should be ILed squared times the resistor value.

Regards,
Edward Gisske, P.E.
Gisske Engineering
608-523-1900
gisske@offex.com

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