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MR GUS
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« on: July 26, 2011, 10:14:06 PM » |
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Wow, I haven't checked 10 & 20 watt single chip led's for around 8 weeks now on ebay, & what a noticeable price drop there's been, what was around £30-34.99 for a single chip led aluminium case lamp is now around £20.99 delivered
I guess this means the push for wider acceptance of led replacing various outdoor lighting (with the exception of 300w security type) has broken new ground & manufactureers will be pushing them out as mainstream any moment now!?
..the PIR varient of the same are around £30-34.00 but pir's aren't necessarily cheap.
if you want this sort of thing for general lighting of a claimed 900 lumens (cold white) then your time has come.
This has got to be good.
Good news that could go a long way to satisfying folks desire to have eyeball searing instant light compared to slow cfl security lights.
Biff you might want to consider a few 12v ones for "super-shed"
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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JohnS
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« Reply #1 on: July 26, 2011, 10:46:19 PM » |
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If getting PIR outdoor LED lights, I recommend getting ones with built in PIRs.
Stand alone PIRs are usually designed for a higher switching current and cannot cope with low power LEDs or even sometimes CFLs.
John
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2.1kWp solar PV
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ecogeorge
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« Reply #2 on: July 26, 2011, 10:51:14 PM » |
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If getting PIR outdoor LED lights, I recommend getting ones with built in PIRs.
Stand alone PIRs are usually designed for a higher switching current and cannot cope with low power LEDs or even sometimes CFLs.
John
You could always run them off a relay ! |
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MR GUS
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« Reply #3 on: July 27, 2011, 10:52:02 AM » |
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see what you think. (unlike my early floods / spots with multi LED, these are nice & simple although not overly attractive, however it's output & miserly consumption that take the lead where this is concerned. Link to 10 watt without pir UK stock, but upon closer look it's debatable as seller info states HK, whilst stock location states UK. ..anyhow for the price, & bearing in mid it all comes form china anyway, may be worth a punt, i've had items state HK that are actually uk dispatch, so it all becomes a tad confusing in the long run. If genuinely uk held & not done for import duty / handling taxes these may be worth going for for some projects & locations http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190531816122&ssPageName=STRK:MEWAX:IT#ht_2375wt_1012... Link to 10 watt without pir & 12 volt http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280709871853&ssPageName=STRK:MEWAX:IT# (pricier)! Link to 10 watt with PIR http://www.ebay.co.uk/itm/PIR-10W-Watt-LED-Floodlight-Flood-Light-Security-Black-/350458279490?pt=UK_AudioElectronicsVideo_Video_TelevisionSetTopBoxes&hash=item5198f0f642#ht_5019wt_1023And these have come down as well,seem to be a regular casing for outdoor garden type lights nowadays.. £12.49 delivered. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190522997126&ssPageName=STRK:MEWAX:IT#ht_2176wt_1012 |
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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MR GUS
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« Reply #4 on: July 27, 2011, 08:32:36 PM » |
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Spoke to the seller who was honest & stated that initial supplier wasn't earthing them properly, new supplier found & alls well with them, & as far as PIRs are concerned he knew his stuff & was able to verify that these weren't "aftermarket bolt on" pir's, & were specced specifically to piggyback the requirements of led, & has sold in the region of 100 pir coupled units no problem to date.
(just so you know)
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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JohnS
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« Reply #5 on: July 27, 2011, 11:04:37 PM » |
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If getting PIR outdoor LED lights, I recommend getting ones with built in PIRs.
Stand alone PIRs are usually designed for a higher switching current and cannot cope with low power LEDs or even sometimes CFLs.
John
You could always run them off a relay ! That won't work. the problem is that some stand alone PIRs will only work if the current they switch is above a certain amount. Relays only help if you want to switch a bigger current. E.g http://www.uswitch.com/energy-saving-products/wall-switches/danlers-wall-pir-occupancy-switch-manual-override#v_23minimum resitive load of 40w. Most specs don't tell you of this minimum load. |
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2.1kWp solar PV
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ecogeorge
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« Reply #6 on: July 27, 2011, 11:45:50 PM » |
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Good point , maybe I was lucky then when I used a 240v pir to switch a relay to drive my outside lights.
Edit - let the pir switch 1 x 11w cfl and hid a relay inside to switch the 11w light the otherside of the porch.
rgds George.
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biff
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« Reply #7 on: July 28, 2011, 12:06:42 AM » |
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thanks gus,
she came home one day 2 months ago with a led lamp which had 160 leds and really bright,so i recon a few of these will do the business. this lamp is in a yellow casing with the leds laid out 16 x 10. i think it came from either lydl or aldi,, wuz zonking dear,,39,99 euros,,sniff sniff,,
biff
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Richard Owen
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« Reply #9 on: July 28, 2011, 08:50:04 AM » |
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Looks expensive to me. Save yourself a fiver (at least): http://www.tlc-direct.co.uk/Products/GLFL1060W.html |
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44 Yingli 230Wp panels feeding into 2x Solar Edge SE5000 inverters .20x 58mm SE, 20x 58mm SW, Solar Thermal feeding 320l thermal store. 10kW heat pump. 300W of Hydro Power . |
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MR GUS
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« Reply #10 on: July 28, 2011, 10:09:55 AM » |
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Richard, that's showing as more expensive for a non pir version compareed to the non pir version I popped up as an example, ..or have I missed something?
I do have several multi-led aluminium cased floods, & they are good, but theres more to go wrong / fade out over time, de-couple from solder etc than with a single led surely by the odds of number of processes involved, not to mention matching up led brigthness within a certain allowance.
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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snyggapa
Newbie
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Posts: 18
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« Reply #11 on: July 30, 2011, 11:06:23 PM » |
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bah, I have a big lighting dilemma and there's not an appropriate forum for it - it seems to fit somewhere between "home automation" and "energy efficiency"
Looking at (effiectively) a new build of a 1700s cottage and how to light it with most flexibility / least environmental cost
I see LEDs as the way forwards but I'm wishing I was 5 years further down the line to be able to know what the best way to control them was!
-Steve
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MR GUS
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« Reply #12 on: August 08, 2011, 02:25:54 PM » |
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feel free to bang on about it, there are lots of clever folk here (& thicko's ..."me" ) ask away I do, it's what makes this such an interesting place to be
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Austroflamm stove & lot's of Lowe alpine fleeces, & a tiny pen15 ..if we're comparing solar set ups!
Noli Timere Messorem
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frotter
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« Reply #13 on: August 08, 2011, 06:13:51 PM » |
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You, a thicko Mr Gus? Shome mishtake shurely? I think you will find you are "awesome"!   |
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HE WHO CONTROLS THE LARD - CONTROLS THE UNIVERSE!! Its me, incidentally..
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wookey
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« Reply #14 on: August 25, 2011, 12:05:02 PM » |
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Gus - did you measure (or ask the supplier) what the standby consumption of the PIRs on those lamps is? I've seen PIRs with very high standby consumption so now always check this. It can dwarf the actual light usage consumption for occaisionally-used lights. If not, care to find out?
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Wookey
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