sensibulb - super bright LED causes FM stereo interference Equipment and Vendor Reviews Forums

 
You must be logged in to post Login Register


Register? | Lost Your Password?

Search Forums:


 






Minimum search word length is 4 characters –Maximum search word length is 84 characters
Wildcard Usage:
* matches any number of characters    % matches exactly one character

sensibulb –super bright LED causes FM stereo interference

No Tags
Post
Member

Jonathan Cline

S/V OASIS

posts 62

2:56 am July 15,2011

Post edited 2:57 am –July 15,2011 by Jonathan Cline


Got this cabin lamp replacement in the mail
finally. Sensibulb has been reviewed in
various sailing mags because of it's brightness
and ridiculously low power (compared to halogens).

 

http://www.defender.com/produc…..sp?path=-1|65136|296901|865900&id=865688

 

About $40 for the 'bulb'. Actually it is a
tiny circuit board with a superbright white
LED on it,the circuit board has a MAX1688
switching regulator,probably temperature
compensated,likely switching at very high
frequency.

Plugged it in,it is very,very white,and
very,very bright. 

However it causes quite noticable dropout
(static buzz) on my FM (some west marine
am/fm/cd deck).  VHF seems to not be

affected though there's no traffic at the

moment so it's not a great time to test.

 

The company supposedly has good service

so I will see how it goes if I decide to contact

them,or fix it somehow.

 

The bummer is this:I believe I skimmed

their product page and it specifically said

"Does not cause interference",so I didn't

worry about it.  Now that I've googled it a

bit,it seems this is a rather common problem

with all actively-driven LED 'bulbs'.

 

As for color (several sail forums have some

complaints about that),I'd say if the color is

a problem just get some colored acrylic/film to

add to the light fixture to tint it a little bit..

Admin

Scott Carle

posts 606

8:32 am July 16,2011

Ouch 40 dollars?

 

check out superbrightleds.com

I bought brighter than stock replacement bulbs for our boat at about 17 or 18 dollars per fixture total cost.

we bought g4 bulbs and then got the adapter that fit our fixture for them to plug into..

 

if you go to http://www.superbrightleds.com and look under marine/rv then look for the g4 bulbs for

G4 Side-Pin Lamps with High Power LEDs

 

I have used both the

G4(B)-xWHP10-DAC LED Lamp

which is brighter than a regular bulb that was stock in the fixture.

and just recently I upgraded a couple of the bulbs to the

G4-WHP15-DAC LED Lamp 

which is even brighter and will just fit in our fixtures. You have to get one of the bases that match your fixtures that adapt to the 2 pins out the side connectors in this bulb.

we have only used the warm white version of these. The current draw is so low that we ended up using the light circuit to install all 6 fans that we have installed on the boat. with all fans and every light (8) on the boat running at the same time the current draw is around or less than 3 amps if I remember right. I think the lights draw around 1 amp if they are all running. It seriously saved on having to run a totally new circuit to install the fans and the fans and lights now use less current than just the old lights.

Scott Carle DE38 Cutter s/v Valkyr

Admin

Scott Carle

posts 606

8:35 am July 16,2011

As to the rf noise…i haven't had an issue with that so far. I have used the vhf while the lights are on and not noticed any noise. Though I'm not sure how the radio is installed. might have a ferrite core filter installed on the power input already. Our am/fm radio doesn't have a antenna hooked up yet so I haven't listened to it to see if anything is affecting it.

Scott Carle DE38 Cutter s/v Valkyr

Member

Jonathan Cline

S/V OASIS

posts 62

8:32 pm November 5,2011

Post edited 8:38 pm –November 5,2011 by Jonathan Cline


I installed the bulb in the v-berth instead of over the nav station,and no RF noise noticed so far on marine radio or FM radio.  Could be a ground problem as suspected on specific wires,not sure.  The FM stereo has some type of filter on it's power lines though obviously not effective for this problem.

I haven't measured the power difference yet.  I believe my 12V bulbs are using 1A each (ouch) and the halogen over the nav station is much more.

One other big reason to use LEDs (especially white LEDs) is because they are much wider spectrum which lifts the mood.  I've read many accounts now and spoken to cruisers who get very upset (moody) during extended cloudy days,much more than is warranted by the weather or lack of wind,and so perhaps attributable to a type of seasonal affective disorder when compared to the great serotonin created on very sunny days.  Basically,cloudy days become a real bummer,and "full(er) spectrum" lights should avoid this.

Admin

Scott Carle

posts 606

1:02 am November 6,2011

I'm not sure how the warm white led's we have installed compare to a full spectrum light. They feel very natural and comfortable to me. I have had the hard white leds before and I really don't like the blue white light they produce. It is very cold and hard to see with .

Scott Carle DE38 Cutter s/v Valkyr

Mungoo
New Member

Mungoo

posts 1

1:10 am March 23,2012

Post edited 1:11 am –March 23,2012 by Mungoo


For light use. I mean,if it's only gonna be used for your LEDs then this is really all you need. Along with a rosin core solder.
I have on and it's perfect for quick jobs. I also have one that has variable heat setting for

Connector / Power Wire LED Controllers LED Power Supplies

when I'm really gonna get down 'n dirty with a project that will take me a long time.
also,with LED.. you're gonna wanna get a heat sink,like the one here.

Member

Jonathan Cline

S/V OASIS

posts 62

6:25 am April 8,2012

Well,if you mean use "strip LED" type lights,and run them along the side of the cabin and power with a 12V controller of some kind,that might work,for general (non-spot) lighting. 

I went the simpler route,picked up white LED christmas lights after the season was over (under $10),string them inside the cabin,and plug them into AC (at the dock).  Works great for non-heating general lighting,though not bright enough like the cabin spot lights are.

In the end,I soldered the LED module to the cabin light wiring because the plug was for a halogen receptacle (DE lights use bayonet),but soldering is not the proper method on a vessel.  Using crimp conductors is the proper method. 

Sensibulb does come with a heatsink,it clips onto the module,so can be repositioned as needed.

Admin

Scott Carle

posts 606

11:39 am April 9,2012

Post edited 11:47 am –April 9,2012 by Scott Carle


I have to have really bright spot type light. dim light messes with my head:).   It's like I cant think right in dim light.. I love our led lighting though. It is brighter than the stock bulbs and all we had to do is get new led bulbs for the existing fixtures. the beam width is 120 degrees on our lights so between the led beam width and the lens of the fixture it does a good job of both really bright under the light and distributed light in the area.

 

Scott

Scott Carle DE38 Cutter s/v Valkyr

No Tags

About the Downeaster Yachts.com Forum

Forum Timezone:America/New_York

Most Users Ever Online:15

Currently Online:
8 Guests

Currently Browsing this Topic:
1 Guest

Forum Stats:

Groups:3
Forums:12
Topics:313
Posts:1313

Membership:

There are 212 Members
There have been 3 Guests

There is 1 Admin

Top Posters:

Erick –73
Jonathan Cline –62
timbalfour –52
Gracie Emmett –47
svbodhran –42
Eclipse –29

Recent New Members:maxinne,joshuaallen,liza30,Mungoo,SailSuperior.com,Al Avey

Administrators:Scott Carle (606 Posts)



 
PrintFriendly