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Old 05-02-2012, 21:01   #46
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Re: Best LED bulbs for the buck

If the bulb replacements are noted with a narrow voltage band they are probably not PWM. If they say 12 - 14 this is almost a sure thing. The replacements designed with PWM will often have a range of 9 to 30. My LED deck floods are rated to 90 VDC and also work off my 12 volt truck battery. The seller told me they even operated them directly on 110 60 cycle and the PWM regulated the current but they didn't recommend it.
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Old 06-02-2012, 03:08   #47
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Re: Best LED bulbs for the buck

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Originally Posted by Cotemar View Post
Here are two more good ones. Purchased from both with good luck.

G4 LED Replacement Bulb Globes Lamps Halogen Light Bulbs Lighting

www.LEDwholesalers.com
Thanks. I just received an email response from hero-ledstore.com (the first link above) who have stated that their LB-12SG46S LED bulb is of the resistive type. The spec states an input voltage range of 10-14. Here is the link to the bulb:
G4 12v 6x 3-Chip 5050 SMD Led Cool or Warm White 1.2w=12W [LB-12SG46S] - $4.66 : Led Strips Hero-ledstore.com
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Old 06-02-2012, 04:56   #48
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Re: Best LED bulbs for the buck

As an update and thanks to Jon Hacking, I have been in email contact with Bill Deng of Lighting Matrix as recommended by Jon Hacking in post #85 at:
Mixed Feelings about LED Cabin Lighting
Bill has agreed to supply a 6 LED g4 bulb at a cost of $1.75 each. It will include PWM regulation with a color temperature of 3000 K. I am waiting for two quotes based on quantity of one (ie, sample) and twenty along with cost of shipping and delivery time. Wish me luck
Pete
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Old 06-02-2012, 07:12   #49
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Re: Best LED bulbs for the buck

We have used Helen at Bo Ya (Lighting Green) but didn't find her very helpful. Because of her, our order was delayed at least a month. After our order she said that Bo Ya was no longer going to add IC current limiting to their LEDs without a minimum order of 500 units. The sole exception was for G4 replacements.

Since Bill Deng & Lighting Matrix sells their G4 replacements for the same price (~$4 for 12-segment 5050), & ALL of their LEDs have IC current limiting, we've switched over to them. They seem much more committed to quality & Bill is very helpful & easy to work with.

BTW, we've found that a 5050 LED segment produces ~12 lumens of light. I think that a 10W halogen produces ~100 lumens. The 10 & 12 segment 5050 LED replacements both produce noticeably more light than our 10W halogens, even in Warm White (Cool White produces ~10% more light, but isn't as nice to sit under, IMO). The Warm White is slightly (but noticeably, when placed side by side) warmer than our 10W halogens as well, but your eye compensates & you don't notice. It's a very pleasant light to sit or read under.

I think that most of these LEDs are actually Blue, but with a phosphor coating that absorbs the blue & re-radiates the light at a different color, much as a Fluorescent re-radiates the ultraviolet produced inside into visible light. Seems inefficient, but apparently that's how they work. The phosphor coating is all that's different for the differently colored white LEDs.
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Old 06-02-2012, 09:43   #50
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Re: Best LED bulbs for the buck

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We have used Helen at Bo Ya (Lighting Green) but didn't find her very helpful. Because of her, our order was delayed at least a month. After our order she said that Bo Ya was no longer going to add IC current limiting to their LEDs without a minimum order of 500 units. The sole exception was for G4 replacements.

Since Bill Deng & Lighting Matrix sells their G4 replacements for the same price (~$4 for 12-segment 5050), & ALL of their LEDs have IC current limiting, we've switched over to them. They seem much more committed to quality & Bill is very helpful & easy to work with.

BTW, we've found that a 5050 LED segment produces ~12 lumens of light. I think that a 10W halogen produces ~100 lumens. The 10 & 12 segment 5050 LED replacements both produce noticeably more light than our 10W halogens, even in Warm White (Cool White produces ~10% more light, but isn't as nice to sit under, IMO). The Warm White is slightly (but noticeably, when placed side by side) warmer than our 10W halogens as well, but your eye compensates & you don't notice. It's a very pleasant light to sit or read under.

I think that most of these LEDs are actually Blue, but with a phosphor coating that absorbs the blue & re-radiates the light at a different color, much as a Fluorescent re-radiates the ultraviolet produced inside into visible light. Seems inefficient, but apparently that's how they work. The phosphor coating is all that's different for the differently colored white LEDs.
Thanks; very helpful. Bill has made his final quote with full specs. Cost is $1.75 each for a 6 SMD5050 LED bulb drawing 1.3 watts, warm white, 120 degree angle, 55-80 lumens, voltage 8-30 and diameter 25 mm. It will use the T6322A PWM chip. This should be a good replacement for our 5 watt halogens. I've asked him for the latest delivery date since we plan to depart March 1st.
Pete
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Old 06-02-2012, 09:56   #51
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Re: Best LED bulbs for the buck

We just tested the Array bulb purchased at Lowes. It seems brighter and a bit more white (as opposed to yellow) when compared to our 5 watt halogens. It seems quite acceptable. It draws 1 watt as measured by our Victron BMV-600 battery monitor. We just got a response from the US distributor; it uses linear regulation as opposed to resistive or PWM. At $8.98 each we will consider these if the Chinese ones don't work out. The big advantage is they are available locally and easy to return if desired.
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Old 06-02-2012, 15:13   #52
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Re: Best LED bulbs for the buck

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We just tested the Array bulb purchased at Lowes. It seems brighter and a bit more white (as opposed to yellow) when compared to our 5 watt halogens. It seems quite acceptable. It draws 1 watt as measured by our Victron BMV-600 battery monitor. We just got a response from the US distributor; it uses linear regulation as opposed to resistive or PWM. At $8.98 each we will consider these if the Chinese ones don't work out. The big advantage is they are available locally and easy to return if desired.
Pete
That was one of the bulbs I tested, and for the price, I found it to be a decent product, though who knows how long it will last.. It is a long way from a Sensibulb but also less than 1/4 the price..

I find it takes two of those to come close to the light output of a single Sensibulb so really $18.00 vs. $36.00 but still, half price. The Sensibulb also has a much wider beam that spreads better and is less "spot" focused..
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Old 06-02-2012, 16:00   #53
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Re: Best LED bulbs for the buck

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That was one of the bulbs I tested, and for the price, I found it to be a decent product, though who knows how long it will last.. It is a long way from a Sensibulb but also less than 1/4 the price..

I find it takes two of those to come close to the light output of a single Sensibulb so really $18.00 vs. $36.00 but still, half price. The Sensibulb also has a much wider beam that spreads better and is less "spot" focused..
That is exactly our experience. But in our case, we did not want the brightness of the sensibulb.

Interestingly, in our fixtures, we find the Array bulb has a wider beam than the Sensibulb. I think it is because our fixture lens is shallow and the Sensibulb sat right against it and did not allow the lens to diffuse the light.

The Sensibulbs got very hot, but the Arrays have no noticeable heat output at all.

The Sensibulbs put out a slightly warmer (yellower) light, but the Array is close and not hard white or blue at all.

If one was looking for the most light output and warmest light, the Sensibulbs are good, but they are expensive, difficult to fit in a lot of fixtures, look "industrial" and they get very hot. But they are very good lights.

If one is looking to replace a 5-10W bulb in a small, shallow fixture, the Array bulbs are good, 1/4 of the price, have the esthetic appearance of a halogen G4 and do not produce heat, but they are not as bright. But you can just pick them up in Lowes and Home Depot

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Old 06-02-2012, 19:12   #54
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Re: Best LED bulbs for the buck

I'm also interested in an anchor light bulb. This bulb has the correct base:
Aqua Signal Series 25 - 44mm Festoon LED lights
but seems pricey. Any suggestions?
Pete
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Old 06-02-2012, 19:36   #55
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Re: Best LED bulbs for the buck

Thats the same one I am using. Same price also.

Lighting and LEDs
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Old 06-02-2012, 22:12   #56
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Re: Best LED bulbs for the buck

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I'm also interested in an anchor light bulb. This bulb has the correct base: Aqua Signal Series 25 - 44mm Festoon LED lights but seems pricey. Any suggestions? Pete
We use this for our anchor light. You can delete the top LEDs, giving you 40(!) 5050 segments, putting out almost 500 lumens. We usually have the brightest anchor light in the anchorage. They will happily put it on the BA15 base that Aqua Signal uses (2 pins opposite, but offset). ~$12 + shipping in singles.

That bulb is also bright enough to use in your tri-color fitting, but the fact that it's not a vertical filament means that for a small angle straight ahead, you see light that's coming through both the red & green segments, which your eye normally perceives as yellow (except that we used a cool-white bulb, so it looks white). This means that for a small angle directly ahead of you, it looks like you're going away!

If anyone has a solution here, we'd love to hear it. We've seen the single, vertically mounted 1W LED shining into a conical mirror (for $80, thank you very much!) but IMO they don't put out enough light.
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Old 07-02-2012, 03:16   #57
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Re: Best LED bulbs for the buck

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We use this for our anchor light. You can delete the top LEDs, giving you 40(!) 5050 segments, putting out almost 500 lumens. We usually have the brightest anchor light in the anchorage. They will happily put it on the BA15 base that Aqua Signal uses (2 pins opposite, but offset). ~$12 + shipping in singles.
Thanks. Bill has just quoted a
Item:LM-MFL0301,
30 SMD3528 AC/DC8-30V ROUND, D22 x H44mm
as shown in the attachment below. We need the festoon style with dimpled ends as shown in right-hand view.
Pete
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Old 07-02-2012, 04:45   #58
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Re: Best LED bulbs for the buck

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We use this for our anchor light. You can delete the top LEDs, giving you 40(!) 5050 segments, putting out almost 500 lumens. We usually have the brightest anchor light in the anchorage. They will happily put it on the BA15 base that Aqua Signal uses (2 pins opposite, but offset). ~$12 + shipping in singles.

That bulb is also bright enough to use
Thanks. Have you noted any RFI from the PWM regulation for either the g4 or anchor bulbs?
Pete
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Old 07-02-2012, 05:25   #59
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Re: Best LED bulbs for the buck

We turn off one string of 3 G4 replacements in the salon when using the SSB. Unfortunately, they came from a variety of sources. And now our entire boat is stripped to her bones for a major overhaul, so I can't isolate the offender...
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Old 07-02-2012, 06:26   #60
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Re: Best LED bulbs for the buck

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We turn off one string of 3 G4 replacements in the salon when using the SSB. Unfortunately, they came from a variety of sources. And now our entire boat is stripped to her bones for a major overhaul, so I can't isolate the offender...
Thanks. We did order 15 g4 bulbs plus 1 festoon style anchor light bulb from Bill. He has been very helpful and extremely fast with his responses. Maybe I should hang onto my 1 Array g4 bulb since it uses linear regulation and is unlikely to cause RFI.
Pete
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