What do you use to cover the emitter board?

10 posts / 0 new
Last post
devman
Offline
Last seen: 9 months 1 week ago
Joined: 04/27/2011 - 06:24
Posts: 825
Location: Hong Kong / Vancouver, Canada
What do you use to cover the emitter board?

Opening up a light, I found it to just be a piece of thin cardboard between the emitter and the reflector.  Should I just be replacing this with more cardboard?  A small piece of kapton tape? A chopped up chunk of soda-bottle-cap liner?

Random dissectors need to know, people! Silly

Edit: Isolation disk. Learned a new term.

Edited by: devman on 06/26/2011 - 06:46
Match
Match's picture
Offline
Last seen: 4 years 7 months ago
Joined: 11/14/2010 - 11:57
Posts: 1488
Location: South Carolina, USA

You're only limited by your imagination....As long as it's a good insulator with some semblence of structural integrity, you should be fine.

I've used plastic water bottle caps, cardstock, black electricians tape, and arctic silver thermal epoxy before... Also, don't forget the good old fashioned air-gap Smile

devman
Offline
Last seen: 9 months 1 week ago
Joined: 04/27/2011 - 06:24
Posts: 825
Location: Hong Kong / Vancouver, Canada

Actually, looking at them, my first thought was "hey, that looks like the insert under a soda bottle cap".  Quickly followed by "crap, it can't be that easy.  what do you want to bet it will melt?"

Thus the trip here, to the great font of knowledge.

 

Thanks Match!

E1320
E1320's picture
Offline
Last seen: 4 months 2 days ago
Joined: 03/30/2011 - 05:26
Posts: 3375
Location: New Hampshire

If you have some Fujik put a dab over the solder points of the emitter before you stick your isolation disk on for added security against a short with the reflector.

I am already visualizing the duct tape over your mouth.

devman
Offline
Last seen: 9 months 1 week ago
Joined: 04/27/2011 - 06:24
Posts: 825
Location: Hong Kong / Vancouver, Canada

Thanks E1320.  It's on the way, but like everything else, held up by the postal strike.

I'm going to go experiment with a bit of plastic and a 3-hole punch.

DrJones
DrJones's picture
Offline
Last seen: 4 years 7 months ago
Joined: 01/05/2011 - 13:30
Posts: 1044
Location: Frankfurt, Germany

I've used a transparency foil (for overhead projectors), thick paper, even normal paper - it depends on how much space I want for a good adjustment.

Davx
Davx's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/17/2011 - 20:29
Posts: 910
Location: Italy

I made same question some days ago. I would try with a thin foil fo teflon.

"There are always new jobs, women, and apartments......there is only ONE BLF." - Chicago X (27/03/2012)

Budgeteer
Budgeteer's picture
Offline
Last seen: 7 years 2 months ago
Joined: 08/24/2010 - 02:19
Posts: 3087
Location: Slovenia (EU)

I even used an oring to press the emitter board to the pill (usefull when the glue cures) and fill the gap before the reflector shortens the circuit. Also makes a nice thing to fine tune the reflector distance and alignement to the emitter when tweaking to the maximum (very important for throwers, the better the job the better the thorw).

kragmutt wrote:

They're gonna send you a green redcat with a black LED.

devman
Offline
Last seen: 9 months 1 week ago
Joined: 04/27/2011 - 06:24
Posts: 825
Location: Hong Kong / Vancouver, Canada

Davx wrote:

I made same question some days ago. I would try with a thin foil fo teflon.

Oh, crud.  I guess I didn't look hard enough.  Can you drop in a link to the original thread?

And thanks for the tip.  The only handy source of teflon I can get my hands on is plumbers tape, sadly.

Don
Don's picture
Offline
Last seen: 1 month 1 week ago
Joined: 01/12/2010 - 16:32
Posts: 6617
Location: Scotland

I've often used the ring reinforcements used to reinforce the punch holes in punched paper. They cost approximately nothing for a few hundred of them.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...