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C
The ultimate LED flashlight
Replies
1
Views
2K
Chuck Olson
C
F
Theoretical efficacy limit for LED
Replies
10
Views
7K
Paul Keinanen
P
J
eerie green fluorescent lamps
Replies
4
Views
2K
TKM
T
M
Color name survey results
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0
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2K
[email protected]
M
J
What happened to the postings?
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2
Views
2K
TKM
T
S
Need help in disco lights according to beat of sound.
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0
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2K
suraj
S
L
Why is LED lighting disappearing?
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10
Views
3K
julies
J
E
Question about LED's
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0
Views
1K
Elemen7s
E
S
LED when will it become good enough?
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17
Views
2K
TKM
T
D
Some s/p ratio figures that I question
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0
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2K
Don Klipstein
D
C
What's the effect of using the wrong bulb/ballast combo?
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2
Views
5K
charles
C
Y
Delay for outdoor lighting
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0
Views
2K
yelkenli
Y
K
Is a Chinese Engineer Glut Coming?
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8
Views
2K
Jeff Jonas
J
E
Why do street lights flicker in snowy weather?
3 4 5
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94
Views
9K
krw
K
T
Moonlight SPD?
Replies
2
Views
3K
Don Klipstein
D
G
Watt Stopper ltg cntrl interferes with projectors
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0
Views
1K
gemmons
G
L
RGB to wavelength related problem
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0
Views
3K
Lord K.
L
A
T5 tubes, electrical specs
Replies
4
Views
899
Andrew Gabriel
A
D
How supply power for changing number of LED?
Replies
5
Views
2K
Bob Eld
B
J
What does a good photometric report cost?
Replies
2
Views
3K
TKM
T
T
Why Are High CCT LEDs Being Used in Outdoor Lighting?
Replies
4
Views
2K
boxman
B
F
Freeware raytracer
Replies
3
Views
2K
Frank Knappe
F
P
What current is drawn by LED mains night light?
2
Replies
33
Views
4K
Charmed Snark
C
J
Electron Stimulated Luminescence: innovation or warmed- up hash?
Replies
1
Views
2K
TKM
T
J
2 black wires but no white wire (photocell-controlled fixture)
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6
Views
7K
RBM
R
S
Strange CFL Failure Mode
Replies
14
Views
3K
Jeff Jonas
J
P
340-360nm LED distributor in the US?
Replies
1
Views
3K
Charles
C
J
I upgraded my parent's kitchen to T8 and T5 lighting
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0
Views
2K
Justin
J
T
OT - News Services?
Replies
3
Views
1K
bud--
B
T
LED Lanterns?
Replies
0
Views
1K
TKM
T
T
More Efficient Incandescent Lamps?
Replies
3
Views
1K
Jeff Waymouth
J
T
Power Draw of Ballasts Without Lamps
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0
Views
1K
TKM
T
R
near IR filter material
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0
Views
2K
RHRRC
R
F
T5/T8 model for LightTools
Replies
3
Views
1K
Frank Knappe
F
A
Re: Power used by mains neon indicator in 1 year?
Replies
1
Views
8K
Don Klipstein
D
M
What power strobe to be seen in daylight
Replies
2
Views
2K
Mike
M
S
Reflection on lighting calculation
Replies
5
Views
2K
Samuel Chan
S
F
Special Eulumdat file sample
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2
Views
2K
Frank Knappe
F
R
What CAD or drawing software are you using?
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0
Views
1K
Richard
R
P
High Pressure Sodium Light Noise
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2
Views
10K
TKM
T
T
LED Circuit Question
Replies
2
Views
2K
Andrew Gabriel
A
D
total lumen output of multiple lamps
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3
Views
7K
TKM
T
J
Ikea WHITE led string
Replies
1
Views
3K
JohnR66
J
J
Chip level LED failure mode
Replies
3
Views
2K
JohnR66
J
T
The Future of High-Efficacy Incandescent Lamps
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5
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2K
Don Klipstein
D
J
Cree claim 160 lumens per what from LED
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10
Views
2K
TKM
T
C
Multi-lamp fluorescent sign ballast mystery
Replies
5
Views
3K
Chuck
C
T
Newsletter on Light Sources
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0
Views
1K
TKM
T
J
Power Point of lumens / watt wanted
Replies
1
Views
1K
TKM
T
M
Osram "Nightbreaker" in US?
Replies
1
Views
2K
JohnR66
J
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