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Measuring frequency of a fluorescent light source?
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I noticed that my eyes feel tired with certain fluorescent lights in my office. I read that low frequency fluorescent lights can make eyes tired. Is there a tool I can purchase to measure the frequency of a fluorescent light source?
fluorescent
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Alec
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I noticed that my eyes feel tired with certain fluorescent lights in my office. I read that low frequency fluorescent lights can make eyes tired. Is there a tool I can purchase to measure the frequency of a fluorescent light source?
fluorescent
asked 3 hours ago
Alec
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Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago
add a comment |Â
up vote
1
down vote
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up vote
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down vote
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I noticed that my eyes feel tired with certain fluorescent lights in my office. I read that low frequency fluorescent lights can make eyes tired. Is there a tool I can purchase to measure the frequency of a fluorescent light source?
fluorescent
asked 3 hours ago
Alec
1061
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Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I noticed that my eyes feel tired with certain fluorescent lights in my office. I read that low frequency fluorescent lights can make eyes tired. Is there a tool I can purchase to measure the frequency of a fluorescent light source?
fluorescent
fluorescent
asked 3 hours ago
Alec
1061
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asked 3 hours ago
Alec
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Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
Alec
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Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
Alec
1061
asked 3 hours ago
Alec
1061
1061
New contributor
Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Alec is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago
add a comment |Â
Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago
Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago
Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago
add a comment |Â
3 Answers
3
active
oldest
votes
up vote
2
down vote
2 possible answers here. What you need is an oscilloscope to measure the output frequency of the ballast. Yes 50 or 60Hz goes into the ballast but the output of electronic ballast do have a different frequency. I would just open the the fixture and get the ballast model number and look it up on line or call the mfg. Much cheaper than getting a scope, even a home built with a micro controller cost 30$. 2nd It can be the wavelength also. If you notice headaches with Flouresents that are slightly yellow in color these can have a color frequency of 2500K with the number increasing to 6500K for a very bright outside like color with values in between this wavelength or color is Independant of the ballast frequency and usually stamped on the tube.
answered 2 hours ago
Ed Beal
27.1k11839
add a comment |Â
up vote
0
down vote
That's easy: it's the same frequency as your electric supply (50Hz or 60Hz), an easy test you can do is using skype webcam setup: try setting the flicker reduction to 50 Hz, if flicker on the screen disappear so you have 50Hz flickering, if flickering doesn't go away, try with 60 Hz, I'm almost sure that you'll find the frequency this way.
answered 2 hours ago
DDS
1,18939
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
add a comment |Â
up vote
0
down vote
The flicker rate of fluorescent tubes has been a subject of considerable comment and discussion for as long as I can remember. I had a friend who designed the lighting in a new office building he was fitting out for relocating his own financial firm. This was San Francisco Bay area in the 1980s or 90s. In a large open area with cubicles he had the 48" tubes side by side on different legs of the 120 V / 240 US electrical system. He believed that this would reduce the flicker effect. He had some valued employees in the old location who complained that the fluorescent light flicker in the old place was irritating and fatiguing.
I think it was overwork that was fatiguing the employees; this guy had many virtues but he was a workaholic employee-driver, but he said he got no more complaints from his employees, even though productivity and work hours increased at the new location. Power of suggestion because my research indicates that this could not possibly have improved the received flicker since it would have been 2-times the 60 Hz and the two legs flicker in phase not out of phase.
https://en.wikipedia.org/wiki/Flicker_fusion_threshold
Fluorescent lamps using conventional magnetic ballasts flicker at
twice the supply frequency. Electronic ballasts do not produce light
flicker since the phosphor persistence is longer than a half cycle of
the higher operation frequency of 20 kHz. The 100–120 Hz flicker
produced by magnetic ballasts is associated with headaches and
eyestrain.[12] Individuals with high critical flicker fusion threshold
are particularly affected by light from fluorescent fixtures that have
magnetic ballasts: their EEG alpha waves are markedly attenuated and
they perform office tasks with greater speed and decreased accuracy.
The problems are not observed with electronic ballasts.[13] Ordinary
people have better reading performance using high-frequency (20–60
kHz) electronic ballasts than magnetic ballasts,[14] although the
effect was small except at high contrast ratio.
answered 2 hours ago
Jim Stewart
9,93011028
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
add a comment |Â
3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
2 possible answers here. What you need is an oscilloscope to measure the output frequency of the ballast. Yes 50 or 60Hz goes into the ballast but the output of electronic ballast do have a different frequency. I would just open the the fixture and get the ballast model number and look it up on line or call the mfg. Much cheaper than getting a scope, even a home built with a micro controller cost 30$. 2nd It can be the wavelength also. If you notice headaches with Flouresents that are slightly yellow in color these can have a color frequency of 2500K with the number increasing to 6500K for a very bright outside like color with values in between this wavelength or color is Independant of the ballast frequency and usually stamped on the tube.
answered 2 hours ago
Ed Beal
27.1k11839
add a comment |Â
up vote
2
down vote
2 possible answers here. What you need is an oscilloscope to measure the output frequency of the ballast. Yes 50 or 60Hz goes into the ballast but the output of electronic ballast do have a different frequency. I would just open the the fixture and get the ballast model number and look it up on line or call the mfg. Much cheaper than getting a scope, even a home built with a micro controller cost 30$. 2nd It can be the wavelength also. If you notice headaches with Flouresents that are slightly yellow in color these can have a color frequency of 2500K with the number increasing to 6500K for a very bright outside like color with values in between this wavelength or color is Independant of the ballast frequency and usually stamped on the tube.
answered 2 hours ago
Ed Beal
27.1k11839
add a comment |Â
up vote
2
down vote
up vote
2
down vote
2 possible answers here. What you need is an oscilloscope to measure the output frequency of the ballast. Yes 50 or 60Hz goes into the ballast but the output of electronic ballast do have a different frequency. I would just open the the fixture and get the ballast model number and look it up on line or call the mfg. Much cheaper than getting a scope, even a home built with a micro controller cost 30$. 2nd It can be the wavelength also. If you notice headaches with Flouresents that are slightly yellow in color these can have a color frequency of 2500K with the number increasing to 6500K for a very bright outside like color with values in between this wavelength or color is Independant of the ballast frequency and usually stamped on the tube.
answered 2 hours ago
Ed Beal
27.1k11839
2 possible answers here. What you need is an oscilloscope to measure the output frequency of the ballast. Yes 50 or 60Hz goes into the ballast but the output of electronic ballast do have a different frequency. I would just open the the fixture and get the ballast model number and look it up on line or call the mfg. Much cheaper than getting a scope, even a home built with a micro controller cost 30$. 2nd It can be the wavelength also. If you notice headaches with Flouresents that are slightly yellow in color these can have a color frequency of 2500K with the number increasing to 6500K for a very bright outside like color with values in between this wavelength or color is Independant of the ballast frequency and usually stamped on the tube.
answered 2 hours ago
Ed Beal
27.1k11839
edited 2 hours ago
answered 2 hours ago
Ed Beal
27.1k11839
answered 2 hours ago
Ed Beal
27.1k11839
answered 2 hours ago
Ed Beal
27.1k11839
27.1k11839
add a comment |Â
add a comment |Â
up vote
0
down vote
That's easy: it's the same frequency as your electric supply (50Hz or 60Hz), an easy test you can do is using skype webcam setup: try setting the flicker reduction to 50 Hz, if flicker on the screen disappear so you have 50Hz flickering, if flickering doesn't go away, try with 60 Hz, I'm almost sure that you'll find the frequency this way.
answered 2 hours ago
DDS
1,18939
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
add a comment |Â
up vote
0
down vote
That's easy: it's the same frequency as your electric supply (50Hz or 60Hz), an easy test you can do is using skype webcam setup: try setting the flicker reduction to 50 Hz, if flicker on the screen disappear so you have 50Hz flickering, if flickering doesn't go away, try with 60 Hz, I'm almost sure that you'll find the frequency this way.
answered 2 hours ago
DDS
1,18939
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
add a comment |Â
up vote
0
down vote
up vote
0
down vote
That's easy: it's the same frequency as your electric supply (50Hz or 60Hz), an easy test you can do is using skype webcam setup: try setting the flicker reduction to 50 Hz, if flicker on the screen disappear so you have 50Hz flickering, if flickering doesn't go away, try with 60 Hz, I'm almost sure that you'll find the frequency this way.
answered 2 hours ago
DDS
1,18939
That's easy: it's the same frequency as your electric supply (50Hz or 60Hz), an easy test you can do is using skype webcam setup: try setting the flicker reduction to 50 Hz, if flicker on the screen disappear so you have 50Hz flickering, if flickering doesn't go away, try with 60 Hz, I'm almost sure that you'll find the frequency this way.
answered 2 hours ago
DDS
1,18939
answered 2 hours ago
DDS
1,18939
answered 2 hours ago
DDS
1,18939
answered 2 hours ago
DDS
1,18939
1,18939
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
add a comment |Â
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
Unfortunately this is not true with modern electronic ballasts, it would be true with magnetic ballast but at least in the U.S. they have not been available since around 2002 and electronic ballasts have been available since the 90's maybe longer.
– Ed Beal
2 hours ago
add a comment |Â
up vote
0
down vote
The flicker rate of fluorescent tubes has been a subject of considerable comment and discussion for as long as I can remember. I had a friend who designed the lighting in a new office building he was fitting out for relocating his own financial firm. This was San Francisco Bay area in the 1980s or 90s. In a large open area with cubicles he had the 48" tubes side by side on different legs of the 120 V / 240 US electrical system. He believed that this would reduce the flicker effect. He had some valued employees in the old location who complained that the fluorescent light flicker in the old place was irritating and fatiguing.
I think it was overwork that was fatiguing the employees; this guy had many virtues but he was a workaholic employee-driver, but he said he got no more complaints from his employees, even though productivity and work hours increased at the new location. Power of suggestion because my research indicates that this could not possibly have improved the received flicker since it would have been 2-times the 60 Hz and the two legs flicker in phase not out of phase.
https://en.wikipedia.org/wiki/Flicker_fusion_threshold
Fluorescent lamps using conventional magnetic ballasts flicker at
twice the supply frequency. Electronic ballasts do not produce light
flicker since the phosphor persistence is longer than a half cycle of
the higher operation frequency of 20 kHz. The 100–120 Hz flicker
produced by magnetic ballasts is associated with headaches and
eyestrain.[12] Individuals with high critical flicker fusion threshold
are particularly affected by light from fluorescent fixtures that have
magnetic ballasts: their EEG alpha waves are markedly attenuated and
they perform office tasks with greater speed and decreased accuracy.
The problems are not observed with electronic ballasts.[13] Ordinary
people have better reading performance using high-frequency (20–60
kHz) electronic ballasts than magnetic ballasts,[14] although the
effect was small except at high contrast ratio.
answered 2 hours ago
Jim Stewart
9,93011028
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
add a comment |Â
up vote
0
down vote
The flicker rate of fluorescent tubes has been a subject of considerable comment and discussion for as long as I can remember. I had a friend who designed the lighting in a new office building he was fitting out for relocating his own financial firm. This was San Francisco Bay area in the 1980s or 90s. In a large open area with cubicles he had the 48" tubes side by side on different legs of the 120 V / 240 US electrical system. He believed that this would reduce the flicker effect. He had some valued employees in the old location who complained that the fluorescent light flicker in the old place was irritating and fatiguing.
I think it was overwork that was fatiguing the employees; this guy had many virtues but he was a workaholic employee-driver, but he said he got no more complaints from his employees, even though productivity and work hours increased at the new location. Power of suggestion because my research indicates that this could not possibly have improved the received flicker since it would have been 2-times the 60 Hz and the two legs flicker in phase not out of phase.
https://en.wikipedia.org/wiki/Flicker_fusion_threshold
Fluorescent lamps using conventional magnetic ballasts flicker at
twice the supply frequency. Electronic ballasts do not produce light
flicker since the phosphor persistence is longer than a half cycle of
the higher operation frequency of 20 kHz. The 100–120 Hz flicker
produced by magnetic ballasts is associated with headaches and
eyestrain.[12] Individuals with high critical flicker fusion threshold
are particularly affected by light from fluorescent fixtures that have
magnetic ballasts: their EEG alpha waves are markedly attenuated and
they perform office tasks with greater speed and decreased accuracy.
The problems are not observed with electronic ballasts.[13] Ordinary
people have better reading performance using high-frequency (20–60
kHz) electronic ballasts than magnetic ballasts,[14] although the
effect was small except at high contrast ratio.
answered 2 hours ago
Jim Stewart
9,93011028
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
add a comment |Â
up vote
0
down vote
up vote
0
down vote
The flicker rate of fluorescent tubes has been a subject of considerable comment and discussion for as long as I can remember. I had a friend who designed the lighting in a new office building he was fitting out for relocating his own financial firm. This was San Francisco Bay area in the 1980s or 90s. In a large open area with cubicles he had the 48" tubes side by side on different legs of the 120 V / 240 US electrical system. He believed that this would reduce the flicker effect. He had some valued employees in the old location who complained that the fluorescent light flicker in the old place was irritating and fatiguing.
I think it was overwork that was fatiguing the employees; this guy had many virtues but he was a workaholic employee-driver, but he said he got no more complaints from his employees, even though productivity and work hours increased at the new location. Power of suggestion because my research indicates that this could not possibly have improved the received flicker since it would have been 2-times the 60 Hz and the two legs flicker in phase not out of phase.
https://en.wikipedia.org/wiki/Flicker_fusion_threshold
Fluorescent lamps using conventional magnetic ballasts flicker at
twice the supply frequency. Electronic ballasts do not produce light
flicker since the phosphor persistence is longer than a half cycle of
the higher operation frequency of 20 kHz. The 100–120 Hz flicker
produced by magnetic ballasts is associated with headaches and
eyestrain.[12] Individuals with high critical flicker fusion threshold
are particularly affected by light from fluorescent fixtures that have
magnetic ballasts: their EEG alpha waves are markedly attenuated and
they perform office tasks with greater speed and decreased accuracy.
The problems are not observed with electronic ballasts.[13] Ordinary
people have better reading performance using high-frequency (20–60
kHz) electronic ballasts than magnetic ballasts,[14] although the
effect was small except at high contrast ratio.
answered 2 hours ago
Jim Stewart
9,93011028
The flicker rate of fluorescent tubes has been a subject of considerable comment and discussion for as long as I can remember. I had a friend who designed the lighting in a new office building he was fitting out for relocating his own financial firm. This was San Francisco Bay area in the 1980s or 90s. In a large open area with cubicles he had the 48" tubes side by side on different legs of the 120 V / 240 US electrical system. He believed that this would reduce the flicker effect. He had some valued employees in the old location who complained that the fluorescent light flicker in the old place was irritating and fatiguing.
I think it was overwork that was fatiguing the employees; this guy had many virtues but he was a workaholic employee-driver, but he said he got no more complaints from his employees, even though productivity and work hours increased at the new location. Power of suggestion because my research indicates that this could not possibly have improved the received flicker since it would have been 2-times the 60 Hz and the two legs flicker in phase not out of phase.
https://en.wikipedia.org/wiki/Flicker_fusion_threshold
Fluorescent lamps using conventional magnetic ballasts flicker at
twice the supply frequency. Electronic ballasts do not produce light
flicker since the phosphor persistence is longer than a half cycle of
the higher operation frequency of 20 kHz. The 100–120 Hz flicker
produced by magnetic ballasts is associated with headaches and
eyestrain.[12] Individuals with high critical flicker fusion threshold
are particularly affected by light from fluorescent fixtures that have
magnetic ballasts: their EEG alpha waves are markedly attenuated and
they perform office tasks with greater speed and decreased accuracy.
The problems are not observed with electronic ballasts.[13] Ordinary
people have better reading performance using high-frequency (20–60
kHz) electronic ballasts than magnetic ballasts,[14] although the
effect was small except at high contrast ratio.
answered 2 hours ago
Jim Stewart
9,93011028
edited 1 hour ago
answered 2 hours ago
Jim Stewart
9,93011028
answered 2 hours ago
Jim Stewart
9,93011028
answered 2 hours ago
Jim Stewart
9,93011028
9,93011028
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
add a comment |Â
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
I also know some folks are affected by low color frequency color lights. When I worked for a major manufacturing company we relamped entire buildings with 6000k and some of the problems associated from Flouresents disappeared (these already had electronic ballast) also these lamps improved productivity and reduced SAD issues that plague Oregon.
– Ed Beal
1 hour ago
add a comment |Â
Alec is a new contributor. Be nice, and check out our Code of Conduct.
Alec is a new contributor. Be nice, and check out our Code of Conduct.
Alec is a new contributor. Be nice, and check out our Code of Conduct.
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Lobby your employer to switch over to led tubes. If they say no and if your office is not to big you could replace them your self. Get the the kind that plug and play, meaning no need to bypass the ballast. You can choose the brightness ( lumen's ) and the color temp ( kelvin ). i prefer natural daylight temp of 5500k but 4000 to 5000 will be nice.
– Alaska man
1 hour ago