LED Floodlamps

[MR GUS]

 Also do big enrgy sucking 26 watt versions for you ivan!


this one's 306 leds

Sells ALOT on fleabay!

 go look via the link, have about 8 pages of items...

[wookey]

pphilpot - those bulbs will pay for themselves in 395 hours (@18p/kWh). So if you only use the lights a few hours/yr then you can justify not changing them. If they ever get left on all day, it doesn't take long to break even (16 days of 24 hrs).

I have two of those 150W floodlights for fixing the car (not yet fitted on new house). Looks like I should go CFL or LED instead.

[Adam]

Could i make my own led flood lamp using some of these http://cgi.ebay.co.uk/1x-High-power-1W-White-LED-Lamp-Light-60-70Lm-free-ship_W0QQitemZ350126631389QQcmdZViewItem?hash=item350126631389&_trksid=p3286.c0.m14&_trkparms=72%3A1301%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318 i have a few old 500w halogen floodlamps lying around.

Would it be possible to wire 4 of these in series and run them off a 12-13v transformer, as they have a +&- they must be DC?

[MR GUS]

our local ironmongers is doing a national ceal catalogue as part of his seasonal stock & is offering a 32W CFL PIR FLOODLIGHT FOR £20
Anyone who has a general ironmongers who carry's  the square deal flyer / catalogue may wish to have a shufty.

[wookey]

adam - LEDs need a current-controlled supply. You cannot control them reliably with voltage - the current/voltage curve is too steep and changes with temp (thermal runaway is possible). At the very least you need a resistor. Characteristic voltage is usally about 3.6V. So a string of 4 in a 350mA supply that provides at least 12v should work. (350mA is the nominal current for 1W LEDs). 1.50 each seems a fair price.

[MR GUS]

come on wookey we need LED floodlight leadership, when you going to "tinker" with one, gotta do better than whats currently on the market surely!

..I for one would like to see what could be achieved via your resources!

[Gnidrolog]

Twin solar LED security lights are on sale in Roy's of Wroxam (Norfolk) and their stores around East Anglia for 14.99 GBP inc VAT. They look the same as this fleabay offering: http://cgi.ebay.co.uk/TWIN-HEAD-SOLAR-PIR-SECURITY-LIGHT-TRITRONIC-LED-NEW_W0QQitemZ250366172515QQcmdZViewItemQQptZUK_Garden_Lighting?hash=item250366172515&_trksid=p3286.c0.m14&_trkparms=72%3A1686%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318

They seem reasonably bright in my very dark driveway (no street lighting). Only problem I had was that 1 of the 1200 MAh C size Ni-Cads was dead.

Gnidrolog

[MR GUS]

Just received my samples today (3 different types) 2 with pir, one just a shed light!

..impressed so far, gotta charge them properly & play around with em although I'm starting to think a few boxes of em for various, "in case"  scenarios.