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post #5 of Old 08-13-2009
Maine Sail
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I have to ask

I have to ask? With an LED drawing very, very little current why would you also want a photo diode? The reason to turn on and off incandescent bulbs with a photo eye is to save relatively large amounts of amp hours.

For example my old anchor light was a 20 watt incandescent bulb and it drew 1.7 amps per hour, or 17 amp hours for a ten hour run. My current LED anchor light draws 1 amp hour for every ten hours of use or 1700% less consumption! An extra couple of hours does make a difference when using an incandescent but not so much with LED.

I now have a Dr. LED Polarstar 40 bulb in an AquaSignal Series 40 all/round anchor light fixture. This is technically a USCG approved combination. It draws roughly .1 amps per hour. That is still only 2.4 amp hours in a 24 hour period.

I still don't see a need for a photo electric eye to turn it on and off unless you have other reasons than I would for using an LED anchor light.

This is the combo:

Close up of Polarstar 40 bulb:

Anchor Light #1:

Photo of different bulbs:


P.S. The bulb is $41.99 (Defender) and the fixture can be found for between $50.00 & $65.00 depending upon the vendor. I paid under $100.00 for this set up and it's BRIGHT!!!!!..

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-Maine Sail / CS-36T


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Last edited by Maine Sail; 08-13-2009 at 08:27 AM.
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