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#81
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Twin flourescent, both flickering
On Wednesday, 24 May 2017 19:51:22 UTC+1, Rod Speed wrote:
tabbypurr wrote in message ... On Wednesday, 24 May 2017 12:30:20 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Wednesday, 24 May 2017 10:29:28 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Tuesday, 23 May 2017 21:03:35 UTC+1, Rod Speed wrote: Fredxxx wrote Rod Speed wrote Fredxxx wrote Rod Speed wrote You have no idea what the impedance of the supply is with that PARTICULAR fluoro. Most supplies are a very low impedance, Most is irrelevant with faults. How much power would be dissipated in a faulty 'electro' to cause a meaningful fluctuation in voltage? Depends on the state of the supply to the fluoro. If the mains wiring has caught fire & is providing power through a layer of charcoal, you might be right. In the other 99.999% of cases you are as usual talking out of somewhere dark. Doesnt need to do anything even remotely like that to see the fluoros flicker with a bad cap. reams of your **** flushed where it belongs Yet you're hopelessly unable to explain your point of view. Everyone can see you are lying thru your ****ing teeth, as always. Please quote your explanation from this thread then. Go and find it yourself. Several of us looked, there was none I said that a bad cap can see the voltage the tubes get produce flicker, particularly when the feed to the fitting hasnt been done as well as it could be too vague to be meaningful or has a fault that sees a higher impedance than normal what fault do you think would produce that? which doesnt produce the flicker until the cap goes bad. And an explanation is irrelevant anyway when removing the cap is so easy to do and proves if the cap is the problem. it proves no such thing of course. Disturbing wiring leading to no more flicker is 100x more likely to be down to a poor connection than a bad cap Only pig ignorant lying bull**** artists like you two would actually be stupid enough to proclaim that no bad cap could ever produce any flickering. I explained exactly how it could. I also said that it's unlikely in the extreme. And you'll have to pardon us if we have noticed that Adam sees a hell of a lot more faults than you two will ever see and is much more likely to know whats possible than you two clowns. a) that proves nothing b) as mentioned such a scenario is more likely due to disturbing a bad connection. A bad cap simply has nothing to do with it. They either a) lose capacitance, causing no flicker, or b) ESR rises, causing no flicker, or c) go leaky, causing no flicker, or d) arc over, blowing a fuse or fusing themselves. No further flicker. Further down the thread you say There can obviously be a poor connection that doesnt see any flicker until there is also a bad cap. PF capacitors in fluoros actually reduce current consumption, so they would marginally improve things in such a case, if at all functional. If thoroughly shot the problem causing flicker is the bad connection, not the cap, which is never going to draw enough current to cause this. Like almost all your explanations, it's your fantasies, and on closer examination they don't stand up. Those of us with some experience in the relevant field know this from that start. You consistently resort to abuse and avoiding the question in a feeble attempt to defend your position, and your explanations when provided show that you've not thought it through. Once a month you get something right. The rest of the time you waste everyone's time with your fool's talk. NT |
#82
Posted to uk.d-i-y
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Twin flourescent, both flickering
wrote in message ... On Wednesday, 24 May 2017 19:51:22 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Wednesday, 24 May 2017 12:30:20 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Wednesday, 24 May 2017 10:29:28 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Tuesday, 23 May 2017 21:03:35 UTC+1, Rod Speed wrote: Fredxxx wrote Rod Speed wrote Fredxxx wrote Rod Speed wrote You have no idea what the impedance of the supply is with that PARTICULAR fluoro. Most supplies are a very low impedance, Most is irrelevant with faults. How much power would be dissipated in a faulty 'electro' to cause a meaningful fluctuation in voltage? Depends on the state of the supply to the fluoro. If the mains wiring has caught fire & is providing power through a layer of charcoal, you might be right. In the other 99.999% of cases you are as usual talking out of somewhere dark. Doesnt need to do anything even remotely like that to see the fluoros flicker with a bad cap. reams of your **** flushed where it belongs Yet you're hopelessly unable to explain your point of view. Everyone can see you are lying thru your ****ing teeth, as always. Please quote your explanation from this thread then. Go and find it yourself. Several of us looked, there was none Lying thru your ****ing teeth, as you always do when done like a ****ing dinner, as you always are. I said that a bad cap can see the voltage the tubes get produce flicker, particularly when the feed to the fitting hasnt been done as well as it could be too vague to be meaningful You never could bull**** and lie your way out of a wet paper bag. or has a fault that sees a higher impedance than normal what fault do you think would produce that? A wiring fault, ****wit. which doesnt produce the flicker until the cap goes bad. And an explanation is irrelevant anyway when removing the cap is so easy to do and proves if the cap is the problem. it proves no such thing of course. Corse it does when putting it back sees it flicker again. Only pig ignorant lying bull**** artists like you two would actually be stupid enough to proclaim that no bad cap could ever produce any flickering. I explained exactly how it could. More of your lies. I also said that it's unlikely in the extreme. Irrelevant to what is possible. Caps fail, ****wit. And you'll have to pardon us if we have noticed that Adam sees a hell of a lot more faults than you two will ever see and is much more likely to know whats possible than you two clowns. a) that proves nothing You never could bull**** and lie your way out of a wet paper bag. b) as mentioned such a scenario is more likely due to disturbing a bad connection. But trivial to prove its the cap by seeing the fault return when the cap is connected again. Even a terminal ****wit such as yourself should be able to manage that if someone was actually stupid enough to lend you a seeing eye dog and a white cane, again. A bad cap simply has nothing to do with it. There you go again, proclaiming that a cap can't do that. They either a) lose capacitance, causing no flicker, or b) ESR rises, causing no flicker, or c) go leaky, causing no flicker, or That can see the voltage across the tubes reduced when there is also significant resistance in the wiring to the fluoro, ****wit. d) arc over, blowing a fuse or fusing themselves. No further flicker. Further down the thread you say There can obviously be a poor connection that doesnt see any flicker until there is also a bad cap. PF capacitors in fluoros actually reduce current consumption, But dont do that AFTER THEY HAVE FAILED, ****wit. so they would marginally improve things in such a case, if at all functional. Even sillier and more pig ignorant than you usually manage. If thoroughly shot the problem causing flicker is the bad connection, not the cap, which is never going to draw enough current to cause this. Even sillier and more pig ignorant than you usually manage, when the leakage and a poor connection in the wiring produces a voltage divider that sees the tubes flicker. reams of your **** any 2 year old could leave for dead flushed where it belongs Keep furiously digging, you'll be out in china any day now, ****wit child. |
#83
Posted to uk.d-i-y
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Twin flourescent, both flickering
"Rod Speed" wrote in message .. **** snipped Ohhhh look, it's silly Wodney, again. |
#84
Posted to uk.d-i-y
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Twin flourescent, both flickering
On Friday, 26 May 2017 02:39:04 UTC+1, Rod Speed wrote:
tabbypurr wrote in message ... On Wednesday, 24 May 2017 19:51:22 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Wednesday, 24 May 2017 12:30:20 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Wednesday, 24 May 2017 10:29:28 UTC+1, Rod Speed wrote: tabbypurr wrote in message ... On Tuesday, 23 May 2017 21:03:35 UTC+1, Rod Speed wrote: Fredxxx wrote Rod Speed wrote Fredxxx wrote Rod Speed wrote You have no idea what the impedance of the supply is with that PARTICULAR fluoro. Most supplies are a very low impedance, Most is irrelevant with faults. How much power would be dissipated in a faulty 'electro' to cause a meaningful fluctuation in voltage? Depends on the state of the supply to the fluoro. If the mains wiring has caught fire & is providing power through a layer of charcoal, you might be right. In the other 99.999% of cases you are as usual talking out of somewhere dark. Doesnt need to do anything even remotely like that to see the fluoros flicker with a bad cap. reams of your **** flushed where it belongs Yet you're hopelessly unable to explain your point of view. Everyone can see you are lying thru your ****ing teeth, as always. Please quote your explanation from this thread then. Go and find it yourself. Several of us looked, there was none Lying thru your ****ing teeth, as you always do when done like a ****ing dinner, as you always are. I said that a bad cap can see the voltage the tubes get produce flicker, particularly when the feed to the fitting hasnt been done as well as it could be too vague to be meaningful You never could bull**** and lie your way out of a wet paper bag. or has a fault that sees a higher impedance than normal what fault do you think would produce that? A wiring fault, ****wit. which doesnt produce the flicker until the cap goes bad. And an explanation is irrelevant anyway when removing the cap is so easy to do and proves if the cap is the problem. it proves no such thing of course. Corse it does when putting it back sees it flicker again. Only pig ignorant lying bull**** artists like you two would actually be stupid enough to proclaim that no bad cap could ever produce any flickering. I explained exactly how it could. More of your lies. I also said that it's unlikely in the extreme. Irrelevant to what is possible. Caps fail, ****wit. And you'll have to pardon us if we have noticed that Adam sees a hell of a lot more faults than you two will ever see and is much more likely to know whats possible than you two clowns. a) that proves nothing You never could bull**** and lie your way out of a wet paper bag. b) as mentioned such a scenario is more likely due to disturbing a bad connection. But trivial to prove its the cap by seeing the fault return when the cap is connected again. Even a terminal ****wit such as yourself should be able to manage that if someone was actually stupid enough to lend you a seeing eye dog and a white cane, again. A bad cap simply has nothing to do with it. There you go again, proclaiming that a cap can't do that. They either a) lose capacitance, causing no flicker, or b) ESR rises, causing no flicker, or c) go leaky, causing no flicker, or That can see the voltage across the tubes reduced when there is also significant resistance in the wiring to the fluoro, ****wit. d) arc over, blowing a fuse or fusing themselves. No further flicker. Further down the thread you say There can obviously be a poor connection that doesnt see any flicker until there is also a bad cap. PF capacitors in fluoros actually reduce current consumption, But dont do that AFTER THEY HAVE FAILED, ****wit. so they would marginally improve things in such a case, if at all functional. Even sillier and more pig ignorant than you usually manage. If thoroughly shot the problem causing flicker is the bad connection, not the cap, which is never going to draw enough current to cause this. Even sillier and more pig ignorant than you usually manage, when the leakage and a poor connection in the wiring produces a voltage divider that sees the tubes flicker. reams of your **** any 2 year old could leave for dead flushed where it belongs Keep furiously digging, you'll be out in china any day now, ****wit child.. Thank you for proving beyond the slightest flicker of a doubt that you have no interest in getting real and every interest in lying blatantly in a pathetic attempt to defend your inadequacies. How a grown man can be so childish I do not know. |
#85
Posted to uk.d-i-y
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Twin flourescent, both flickering
Some gutless ****wit desperately cowering behind
wrote just the puerile ****/ desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. |
#86
Posted to uk.d-i-y
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Twin flourescent, both flickering
On Friday, 26 May 2017 10:43:41 UTC+1, Rod Speed wrote:
Some gutless ****wit desperately cowering behind tabbypurr wrote just the puerile ****/ desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. I think you have the maturity age of a 5 year old. |
#87
Posted to uk.d-i-y
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Twin flourescent, both flickering
On 26/05/17 12:40, wrote:
On Friday, 26 May 2017 10:43:41 UTC+1, Rod Speed wrote: Some gutless ****wit desperately cowering behind tabbypurr wrote just the puerile ****/ desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. I think you have the maturity age of a 5 year old. I think it make be an AI https://www.theregister.co.uk/2016/0...east_and_west/ -- To ban Christmas, simply give turkeys the vote. |
#88
Posted to uk.d-i-y
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Twin flourescent, both flickering
On 20/05/17 16:07, R D S wrote:
Both tubes in a flourescent are flickering and won't light. Christ, what a palaver I seem to have provoked! |
#89
Posted to uk.d-i-y
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Twin flourescent, both flickering
Some gutless ****wit desperately cowering behind
tabbypurr wrote just the puerile ****/ desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. |
#90
Posted to uk.d-i-y
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Twin flourescent, both flickering
On 26/05/2017 20:04, Rod Speed wrote:
On 26/05/17 12:40, wrote: I think you have the maturity age of a 5 year old. Some gutless ****wit desperately cowering behind tabbypurr wrote just the puerile ****/ desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. QED |
#91
Posted to uk.d-i-y
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Twin flourescent, both flickering
Some gutless ****wit desperately cowering behind
Fredxxx wrote just the puerile ****/desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. |
#92
Posted to uk.d-i-y
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Twin flourescent, both flickering
On Friday, 26 May 2017 21:01:34 UTC+1, Rod Speed wrote:
Some gutless ****wit desperately cowering behind Fredxxx wrote just the puerile ****/desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. Maybe I was wrong about 5 year old. 4 year old. It's pathetic. |
#93
Posted to uk.d-i-y
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Twin flourescent, both flickering
On 26/05/17 21:36, wrote:
On Friday, 26 May 2017 21:01:34 UTC+1, Rod Speed wrote: Some gutless ****wit desperately cowering behind Fredxxx wrote just the puerile ****/desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. Maybe I was wrong about 5 year old. 4 year old. It's pathetic. Why are you still reading the AI's output? This is more fun and just as informative http://rathergood.com/swearotron/ http://rathergood.com/buffy/ and when you have finished with that you can enjoy the full EU experience http://rathergood.com/laibach/ before finishing up with a good bit of heavy metal http://rathergood.com/lightsabre/ -- No Apple devices were knowingly used in the preparation of this post. |
#94
Posted to uk.d-i-y
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Twin flourescent, both flickering
Some gutless ****wit desperately cowering behind
wrote just the puerile ****/desperate attempt to bull**** its way out of its predicament it always ends up with when its got done like a ****ing dinner, as it always is. |
#95
Posted to uk.d-i-y
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Twin flourescent, both flickering
On Fri, 26 May 2017 18:19:52 +0100, R D S wrote:
On 20/05/17 16:07, R D S wrote: Both tubes in a flourescent are flickering and won't light. Christ, what a palaver I seem to have provoked! Don't blame yourself. The "palaver" was largely the result of a "Rod Speed baiting frenzy" by Fredxxx and tabbypurr most of which I swiftly passed by unread (I did briefly consider killfiling both perpetrators but, hey! it was a Rod Speed baiting exercise after all and he's already in my killfile filter). :-) Your post did give me cause to track down my "Lamps and Lighting" book (1972 edition) to check out fluorescent ballast circuits but I didn't see any twin tube switch start circuit examples (only one each of the Quickstart , Rapid-start and cold-start transformer circuits, each sans any 'starter switch'). I'm pretty certain the total of 14 fluorescent ballast circuits shown in the book are far from an exhaustive list but I can't think where else I may have seen a more comprehensive one. Perhaps your twin tube fitting is simply two independently ballasted switch started lamps wired to a common PFC capacitor? Does the fitting use two plug in starters? Also, does removing one of the lamps prevent the remaining one from even starting up or else modify the flickering symptom if it does still light up? It's quite possible that it's just a case of both lamps wearing out at almost the same time. The second lamp to start flickering may well have masked the flickering of the first lamp failure giving a false impression that both lamps have either improbably failed simultaneously or else the problem lies with another common component. Having checked out what wikipedia has to say on the subject (not as much as I'd hoped) and a google search, I did see a few examples of twin tube fittings using switch starting where a couple of 2 foot 20W tubes are connected in series via a single ballast choke to the mains supply using two starter switches, one for each tube. To my mind, a rather improbable circuit but since I saw at least three examples of this twin tube circuit, I guess it must exist IRL. If your fitting is using the same arrangement, it will be blessed (or cursed) with *two* starter switches. Also, this means that removing any one tube will cause the remaining tube to stop working (they are in series). The presence of a starter across each tube must make for an unusual starting sequence under normal working conditions (there's going to be some interaction between the operation of each starter switch). It seems that the flickering of *both* tubes only requires one of them to go faulty, loss of emmissive material at a cathode, either from old age or from premature failure. BTW, I can't figure out how a *single* starter can be wired up to start a double tube fitting. If you've already tried replacing "the starter switch", singular, I reckon you must have missed one. The problem could be as simple as a single tube failure. However, in view of the liklihood of it being age related wear out, I'd suggest replacing both tubes, keeping hold of the old but still working tube as a spare for diagnostic testing purposes the next time one of the tubes starts exhibiting such symptoms (often the result of being used way beyond its useful 8,000 hours or so service life typical of use in switch start circuits - 16000 hours being more typical with modern delay start electronic HF ballast units). -- Johnny B Good |
#96
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Twin flourescent, both flickering
En el artículo , R D S
escribió: Christ, what a palaver I seem to have provoked! A killfile works wonders. I saw only five posts out of the 130 in the thread, including yours. -- (\_/) (='.'=) "Between two evils, I always pick (")_(") the one I never tried before." - Mae West |
#97
Posted to uk.d-i-y
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Twin flourescent, both flickering
On Saturday, 27 May 2017 03:49:09 UTC+1, Johnny B Good wrote:
On Fri, 26 May 2017 18:19:52 +0100, R D S wrote: On 20/05/17 16:07, R D S wrote: Both tubes in a flourescent are flickering and won't light. Christ, what a palaver I seem to have provoked! Don't blame yourself. The "palaver" was largely the result of a "Rod Speed baiting frenzy" by Fredxxx and tabbypurr most of which I swiftly passed by unread (I did briefly consider killfiling both perpetrators but, hey! it was a Rod Speed baiting exercise after all and he's already in my killfile filter). :-) We tried to introduce him to reality on his own terms, a futile exercise. Your post did give me cause to track down my "Lamps and Lighting" book (1972 edition) to check out fluorescent ballast circuits but I didn't see any twin tube switch start circuit examples (only one each of the Quickstart , Rapid-start and cold-start transformer circuits, each sans any 'starter switch'). you need a better book! I'm pretty certain the total of 14 fluorescent ballast circuits shown in the book are far from an exhaustive list but I can't think where else I may have seen a more comprehensive one. Perhaps your twin tube fitting is simply two independently ballasted switch started lamps wired to a common PFC capacitor? Does the fitting use two plug in starters? Also, does removing one of the lamps prevent the remaining one from even starting up or else modify the flickering symptom if it does still light up? It's quite possible that it's just a case of both lamps wearing out at almost the same time. The second lamp to start flickering may well have masked the flickering of the first lamp failure giving a false impression that both lamps have either improbably failed simultaneously or else the problem lies with another common component. Having checked out what wikipedia has to say on the subject (not as much as I'd hoped) what other info did you hope to find? and a google search, I did see a few examples of twin tube fittings using switch starting where a couple of 2 foot 20W tubes are connected in series via a single ballast choke to the mains supply using two starter switches, one for each tube. To my mind, a rather improbable circuit but since I saw at least three examples of this twin tube circuit, I guess it must exist IRL. it was moderately common. A definite compromise but cheaper. If your fitting is using the same arrangement, it will be blessed (or cursed) with *two* starter switches. Also, this means that removing any one tube will cause the remaining tube to stop working (they are in series). The presence of a starter across each tube must make for an unusual starting sequence under normal working conditions (there's going to be some interaction between the operation of each starter switch). yeah, it's a bit crazy to watch. But it gets there. It seems that the flickering of *both* tubes only requires one of them to go faulty, loss of emmissive material at a cathode, either from old age or from premature failure. could be either tube bad, either starter bad, or a bad connection somewhere. That's the main downside of 2 tubes on one switchstart ballast. BTW, I can't figure out how a *single* starter can be wired up to start a double tube fitting. I don't believe it can NT If you've already tried replacing "the starter switch", singular, I reckon you must have missed one. The problem could be as simple as a single tube failure. However, in view of the liklihood of it being age related wear out, I'd suggest replacing both tubes, keeping hold of the old but still working tube as a spare for diagnostic testing purposes the next time one of the tubes starts exhibiting such symptoms (often the result of being used way beyond its useful 8,000 hours or so service life typical of use in switch start circuits - 16000 hours being more typical with modern delay start electronic HF ballast units). |
#98
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Twin flourescent, both flickering
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#99
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Twin flourescent, both flickering
On 27/05/2017 05:47, Mike Tomlinson wrote:
En el artículo , R D S escribió: Christ, what a palaver I seem to have provoked! A killfile works wonders. I saw only five posts out of the 130 in the thread, including yours. It might have been smarter to have killed the whole thread. But then you won't see this! |
#100
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Twin flourescent, both flickering
On Saturday, 27 May 2017 12:52:10 UTC+1, Fredxxx wrote:
On 27/05/2017 11:52, tabbypurr wrote: On Saturday, 27 May 2017 03:49:09 UTC+1, Johnny B Good wrote: BTW, I can't figure out how a *single* starter can be wired up to start a double tube fitting. I don't believe it can Given the 4 heaters need preheat to strike, I don't believe you can have just the one starter either. Practically, no. If desperate one could make it work with only 2 getting preheat, but it wouldn't do tube life any good. NT |
#101
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Twin flourescent, both flickering
On Sat, 27 May 2017 05:23:28 -0700, tabbypurr wrote:
On Saturday, 27 May 2017 12:52:10 UTC+1, Fredxxx wrote: On 27/05/2017 11:52, tabbypurr wrote: On Saturday, 27 May 2017 03:49:09 UTC+1, Johnny B Good wrote: BTW, I can't figure out how a *single* starter can be wired up to start a double tube fitting. I don't believe it can Given the 4 heaters need preheat to strike, I don't believe you can have just the one starter either. Practically, no. If desperate one could make it work with only 2 getting preheat, but it wouldn't do tube life any good. The point I was making was that the OP only mentioned trying a replacement starter (*singular*) which implied some cunning circuit topology where both tubes could be started using just a single starter switch. However, once you've resorted to that sort of complexity, a starter becomes redundent since you're now into the territory of twin tube quickstart and rapidstart ballasts which can fire up the tubes without any such switch starter devices. Rather than speculate any further, I'll await the OP's response to clarify the situation for us. I'm anticipating that he'll confirm the use of a pair of starters and that the unit won't even attempt to light up either of the remaining tubes once one of them has been pulled from the fitting. -- Johnny B Good |
#102
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Twin flourescent, both flickering
On Saturday, 27 May 2017 18:17:44 UTC+1, Johnny B Good wrote:
On Sat, 27 May 2017 05:23:28 -0700, tabbypurr wrote: On Saturday, 27 May 2017 12:52:10 UTC+1, Fredxxx wrote: On 27/05/2017 11:52, tabbypurr wrote: On Saturday, 27 May 2017 03:49:09 UTC+1, Johnny B Good wrote: BTW, I can't figure out how a *single* starter can be wired up to start a double tube fitting. I don't believe it can Given the 4 heaters need preheat to strike, I don't believe you can have just the one starter either. Practically, no. If desperate one could make it work with only 2 getting preheat, but it wouldn't do tube life any good. The point I was making was that the OP only mentioned trying a replacement starter (*singular*) which implied some cunning circuit topology where both tubes could be started using just a single starter switch. However, once you've resorted to that sort of complexity, a starter becomes redundent since you're now into the territory of twin tube quickstart and rapidstart ballasts which can fire up the tubes without any such switch starter devices. Rather than speculate any further, I'll await the OP's response to clarify the situation for us. I'm anticipating that he'll confirm the use of a pair of starters and that the unit won't even attempt to light up either of the remaining tubes once one of them has been pulled from the fitting. Of course the OP requires 2 starters, unless it's a cobbled together fitting of different ballast types, or some homebrewed oddity. You can start 20w tubes by simplifying the setup rather than complicating it... just remove the starters & use an LC ballast instead of L. The resulting raised starting voltage slowly increases tube current until it lights properly. Done that before. NT |
#103
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Twin flourescent, both flickering
Rod Speed wrote:
Fredxxx wrote Rod Speed wrote wrote R D S wrote Phil L wrote Is there a starter? - 35p each, I'd try this first Thought the same, done that. So you've got switchstart fittings. Then it's wrong starters, bad tubes or bad contacts. The capacitor can't cause this. Corse it can. And is in fact by far the most likely problem when the tubes arent connected in series after the things he has tried already. The capacitor will be across mains in. Yes. Can you explain, assuming the supply impedance is in the order of a fraction of an ohm, why a capacitor can cause the perturbations in voltage supply to cause a substantial flicker? You havent established that it is causing perturbations in the voltage supply. And it can obviously do that by not being a viable cap anymore anyway. In this permissive society the capacitor can be anything it likes. But the only way it is going to significantly affect the operation of the tubes is by 'being' a sufficiently low impedance to operate the over-current protection device protecting the supply. The OP would have noticed such acting-out by the capacitor. -- Roger Hayter |
#104
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Twin flourescent, both flickering
En el artículo , Roger Hayter
escribió: The OP would have noticed such acting-out by the capacitor. Subtle. -- (\_/) (='.'=) "Between two evils, I always pick (")_(") the one I never tried before." - Mae West |
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