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parts for lamps

B

Bryan L. Koschmann

Jan 1, 1970
0
Hi,

I hope this isn't inappropriate for here, but I'm looking to make some
white LED lamps (task lights, music stand, etc) since I can't find
anything that suits my needs. I'm wondering if anyone can direct me to a
supplier for goosneck parts or other lamp-arm parts?

Also, do white LEDs have any dimming capability?

Thanks,

Bryan
 
J

John Popelish

Jan 1, 1970
0
Bryan L. Koschmann said:
Also, do white LEDs have any dimming capability?

The light out of most LEDs is roughly proportional to their current.
 
C

CFoley1064

Jan 1, 1970
0
I hope this isn't inappropriate for here, but I'm looking to make some
white LED lamps (task lights, music stand, etc) since I can't find
anything that suits my needs. I'm wondering if anyone can direct me to a
supplier for goosneck parts or other lamp-arm parts?

Also, do white LEDs have any dimming capability?

Thanks,

Bryan

Hi, Bryan. The part you're looking to make already exists -- superbright LEDs
are now in standard bases. The link below is one source -- use Google for
more.

http://www.superbrightleds.com/led_prods.htm

Your best shot would be to just get a gooseneck task lamp at a garage sale, and
find a superbright LED bulb with a base that will fit.

You can vary the intensity of LEDs most efficiently by using a fast switching,
varying duty cycle signal to turn on and off a transistor which drives the LED.
Again, use Google to find various schematics for hobbyists.

Good luck.
Chris
 
B

Bryan L. Koschmann

Jan 1, 1970
0
Your best shot would be to just get a gooseneck task lamp at a garage sale, and
find a superbright LED bulb with a base that will fit.

You can vary the intensity of LEDs most efficiently by using a fast switching,
varying duty cycle signal to turn on and off a transistor which drives the LED.
Again, use Google to find various schematics for hobbyists.

Hi Chris,

See, that would be okay if it were just a desk lamp I wanted to make. But
I have a few different uses for these, so while I could still pull apart
an old lamp and use the parts, I would rather buy just the parts I need
and know I can make a couple :)

I saw on some show they bought all the parts new to make various lamps,
saying "they are available at most hardware stores" but none around here
seem to have those parts.

I'll look into that schematic. I don't know much about this stuff but I
can follow a schematic.

Thanks!

Bryan
 
M

Michael A. Terrell

Jan 1, 1970
0
Bryan L. Koschmann said:
Hi Chris,

See, that would be okay if it were just a desk lamp I wanted to make. But
I have a few different uses for these, so while I could still pull apart
an old lamp and use the parts, I would rather buy just the parts I need
and know I can make a couple :)

I saw on some show they bought all the parts new to make various lamps,
saying "they are available at most hardware stores" but none around here
seem to have those parts.

I'll look into that schematic. I don't know much about this stuff but I
can follow a schematic.

Thanks!

Bryan

Look around for a place that either repairs or sells mostly lamps.
They usually have several suppliers for parts to fix all types of lamps,
and they should be happy to sell you what you want. Try a big indoor
flea market, as well. One last resort is thrift stores where they get
all kinds of weird lamps to resell. Odd lamps are hard to move and are
usually very cheap.
--
10 days!


Michael A. Terrell
Central Florida
 
I

Ian Stirling

Jan 1, 1970
0
John Popelish said:
The light out of most LEDs is roughly proportional to their current.

Down to relatively low currents.
(good White LEDs are generally quite visible at a current of a microamp
(a ten thousandth of their nominal power)

The other benefit is that they don't go red as they are dimmed.
They may shift colour a little, but much less than ordinary light bulbs
do.
 
W

Watson A.Name - Watt Sun, Dark Remover

Jan 1, 1970
0
Hi,

I hope this isn't inappropriate for here, but I'm looking to make some
white LED lamps (task lights, music stand, etc) since I can't find
anything that suits my needs. I'm wondering if anyone can direct me to a
supplier for goosneck parts or other lamp-arm parts?

Also, do white LEDs have any dimming capability?

I made a gooseneck out of a C clamp and a length of some 10 AWG copper
wire. I used hose clamps to fasten the wire to the C clamp.

White LEDs are easily dimmed by reducing the current. The ligth they
put out stays white, and doesn't turn orangish like an incandescent
does. You can increase the series resistance, or pulse width modulate
the DC to the LED. But the easiest way is just to switch on or off
the LEDs in banks of 3 or 4, or more. Just connect the banks to
multiple on/off switches.


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C

cornytheclown

Jan 1, 1970
0
Bryan L. Koschmann said:
Hi Chris,

See, that would be okay if it were just a desk lamp I wanted to make. But
I have a few different uses for these, so while I could still pull apart
an old lamp and use the parts, I would rather buy just the parts I need
and know I can make a couple :)

I saw on some show they bought all the parts new to make various lamps,
saying "they are available at most hardware stores" but none around here
seem to have those parts.

I'll look into that schematic. I don't know much about this stuff but I
can follow a schematic.

Thanks!

Bryan

Look for Corrugated Steel tubing...... You can find it at plumbing or
hardware stores in the form of flexible connectors for water heaters,
though this is usually copper.... flexible gas connectors might also
be a little more expensive alternative, they are generally more supple
than the water connectors but they come in smaller diameters.

The above alternatives are finished productas obviously and they will
be more expensive than the raw material itself but they are readily
available.

You might also go to a plumbing place and see if they carry any
flexible tubing used for running gas lines, it comes as a raw tubing
and its quite popular now and they might have some scrap pieces laying
around. It comes with a plastic covering but this can be easily slit
and removed.

good luck
 
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