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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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2D Lamps
These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why?
Seems daft having 2 configurations for 1 lamp. Will a 2 pin lamp work in a 4 pin holder? -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#2
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2D Lamps
The Medway Handyman was thinking very hard :
These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. I think - not sure on this.... The 2 pins have (most of the control gear inside them, where as the 4 pin jobs all of the control is outside. Will a 2 pin lamp work in a 4 pin holder? No! -- Regards, Harry (M1BYT) (L) http://www.ukradioamateur.co.uk |
#3
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2D Lamps
"The Medway Handyman" wrote in message m... These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. Will a 2 pin lamp work in a 4 pin holder? -- Dave - The Medway Handyman www.medwayhandyman.co.uk I'm not quite sure which ones you are referring to, but, if the following 2 and 4 pin: http://www.tlc-direct.co.uk/Products/LADD18.html http://www.tlc-direct.co.uk/Products/LADD18slash4P.html you will find that they are not interchangeable as the base has different lugs on it. The 4 pin ones I use are for lights that have an emergency battery supply. Although they appear identical apart from a small red LED and that doesn't stop people forcing the wrong one in though! Peter |
#4
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2D Lamps
Harry Bloomfield wrote:
The Medway Handyman was thinking very hard : These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. I think - not sure on this.... The 2 pins have (most of the control gear inside them, where as the 4 pin jobs all of the control is outside. Hmmm. 2 pin & 4 pin lamps are the same price at TLC. I would have thought if 2 pin had more inside they would cost more? -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#5
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2D Lamps
Peter Andrews wrote:
"The Medway Handyman" wrote in message m... These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. Will a 2 pin lamp work in a 4 pin holder? -- Dave - The Medway Handyman www.medwayhandyman.co.uk I'm not quite sure which ones you are referring to, but, if the following 2 and 4 pin: http://www.tlc-direct.co.uk/Products/LADD18.html http://www.tlc-direct.co.uk/Products/LADD18slash4P.html you will find that they are not interchangeable as the base has different lugs on it. The 4 pin ones I use are for lights that have an emergency battery supply. Although they appear identical apart from a small red LED and that doesn't stop people forcing the wrong one in though! I meant these (at the top) http://tinyurl.com/yz6lz32 -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#6
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2D Lamps
In article ,
"The Medway Handyman" writes: These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. Will a 2 pin lamp work in a 4 pin holder? No. The 2-pin ones have a built-in fluorescent tube starter in the base, and will only run using a series magnetic ballast. They aren't dimmable. The 4-pin ones are usually used with electronic control gear and so have no fluorescent tube starter in the base, and dimmable electronic control gear is available. They can in theory be used with a series magnetic ballast and separate fluorescent tube starter, but that would be most unusual and I've never seen it done. Note that both the 16W and 28W have another power rating which is the same physical size - 21W and 38W respectively. (Actually, the higher power ones have larger diameter tubes, but the overal lamp size is the same.) -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
#7
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2D Lamps
Andrew Gabriel wrote:
In article , "The Medway Handyman" writes: These 16w and 28w lamps come in either 2 pin or 4 pin - I wondered why? Seems daft having 2 configurations for 1 lamp. Will a 2 pin lamp work in a 4 pin holder? No. The 2-pin ones have a built-in fluorescent tube starter in the base, and will only run using a series magnetic ballast. They aren't dimmable. The 4-pin ones are usually used with electronic control gear and so have no fluorescent tube starter in the base, and dimmable electronic control gear is available. They can in theory be used with a series magnetic ballast and separate fluorescent tube starter, but that would be most unusual and I've never seen it done. Note that both the 16W and 28W have another power rating which is the same physical size - 21W and 38W respectively. (Actually, the higher power ones have larger diameter tubes, but the overal lamp size is the same.) Thanks Andrew. -- Dave - The Medway Handyman www.medwayhandyman.co.uk |
#8
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2D Lamps
John Rumm wrote:
Andrew Gabriel wrote: The 4-pin ones are usually used with electronic control gear and so have no fluorescent tube starter in the base, and dimmable electronic control gear is available. They can in theory be used with a series magnetic ballast and separate fluorescent tube starter, but that would be most unusual and I've never seen it done. I have a couple of portable work lights that use these - mag ballast and separate starter... My bathroom light has a 4 pin, mag ballast and an electronic starter. The electronic starter made the flicker at turn on a little better. |
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