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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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AC - DC adapter
Anyone any thoughts on where I could get a replacement for one of these:
https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. -- F |
#2
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AC - DC adapter
On 14/12/2017 18:18, F wrote:
Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a* spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. Try it with 4.5v DC (3x AA cells) and a diode in series and see what lights up. Then take a look in Maplin if you don't mind paying throught the nose or eBay if you are not in a hurry. The PSUs that come with a range of connector fittings are you best bet. 4.5DC might be OK if the LED chain isn't relying on AC power to work properly. You might get away subverting an old mobile phone charger... -- Regards, Martin Brown |
#3
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AC - DC adapter
On 14/12/2017 19:55, Martin Brown wrote:
On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a* spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. I saw the ~ and ignored it. Amateur hour! -- F |
#4
Posted to uk.d-i-y
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AC - DC adapter
F wrote:
On 14/12/2017 19:55, Martin Brown wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. I saw the ~ and ignored it. Amateur hour! Do the light flash or do anything clever? the AC input might be used for timing purposes? |
#5
Posted to uk.d-i-y
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AC - DC adapter
On 14/12/2017 21:09, Bob Minchin wrote:
F wrote: On 14/12/2017 19:55, Martin Brown wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a* spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. I saw the ~ and ignored it. Amateur hour! Do the light flash or do anything clever? the AC input might be used for timing purposes? Each lamp (three sticks of 12) cycles through different colours. -- F |
#6
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AC - DC adapter
F wrote:
On 14/12/2017 21:09, Bob Minchin wrote: F wrote: On 14/12/2017 19:55, Martin Brown wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. I saw the ~ and ignored it. Amateur hour! Do the light flash or do anything clever? the AC input might be used for timing purposes? Each lamp (three sticks of 12) cycles through different colours. OK well try the 3 x 1.5v battery route and it might work or if not, it is not too hard to knock up a squarewave oscillator at 50hz running from a DC supply which should bring back the twinkle to your lights. Also worth opening up the old transformer and see if just the thermal fuse has failed? |
#8
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AC - DC adapter
On 15/12/2017 09:29, Brian Gaff wrote:
If its ac then why the polarised connections though? Brian It about the cheapest nastiest connector ever made. -- Regards, Martin Brown |
#9
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AC - DC adapter
On Friday, 15 December 2017 10:33:16 UTC, Martin Brown wrote:
On 15/12/2017 09:29, Brian Gaff wrote: If its ac then why the polarised connections though? Brian It about the cheapest nastiest connector ever made. They used to be used for speaker connections IIRC, and few have such speakers now so they probbaly got a good deal on them from a suplier or scrap merchant |
#10
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AC - DC adapter
On 15/12/2017 10:53, whisky-dave wrote:
On Friday, 15 December 2017 10:33:16 UTC, Martin Brown wrote: On 15/12/2017 09:29, Brian Gaff wrote: If its ac then why the polarised connections though? Brian It about the cheapest nastiest connector ever made. They used to be used for speaker connections IIRC, and few have such speakers now so they probbaly got a good deal on them from a suplier or scrap merchant Look up 2 pin DIN, if that's what is shown in the picture. -- Max Demian |
#11
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AC - DC adapter
On Fri, 15 Dec 2017 02:53:18 -0800, whisky-dave wrote:
On Friday, 15 December 2017 10:33:16 UTC, Martin Brown wrote: On 15/12/2017 09:29, Brian Gaff wrote: If its ac then why the polarised connections though? Brian It about the cheapest nastiest connector ever made. They used to be used for speaker connections IIRC, and few have such speakers now so they probbaly got a good deal on them from a suplier or scrap merchant I have seen a lot of wall warts with these connectors, and *none* have been DIN speaker connectors (I have some of those, and I compared them). They may look the same on a photo, but they are quite a bit bigger. -- My posts are my copyright and if @diy_forums or Home Owners' Hub wish to copy them they can pay me £1 a message. Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning surge protection* - a w_tom conductor |
#12
Posted to uk.d-i-y
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AC - DC adapter
"Martin Brown" wrote in message news On 15/12/2017 09:29, Brian Gaff wrote: If its ac then why the polarised connections though? Brian It about the cheapest nastiest connector ever made. Nope, jacks are cheaper. |
#13
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AC - DC adapter
Brian Gaff wrote
If its ac then why the polarised connections though? Easier to use the same connectors for all their ****. "Martin Brown" wrote in message news On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. The logo on the label implies it is AC output. 1VA is very low power. Try it with 4.5v DC (3x AA cells) and a diode in series and see what lights up. Then take a look in Maplin if you don't mind paying throught the nose or eBay if you are not in a hurry. The PSUs that come with a range of connector fittings are you best bet. 4.5DC might be OK if the LED chain isn't relying on AC power to work properly. You might get away subverting an old mobile phone charger... -- Regards, Martin Brown |
#14
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AC - DC adapter
On Thu, 14 Dec 2017 18:18:01 +0000
F news@nowhere wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. 1VA is a very low rating. I'd be inclined to try a generic USB charger and hope it didn't make the lights go bang from moderate over-voltage or because it's DC instead of AC. |
#15
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AC - DC adapter
If you are worried, then get an lm317 three terminal regulator and a
suitable pot and get it just right on a charger with more volts out, like one of those beefier usb ones. It might get a bit warm. Seems odd to me if its AC though, as leds are most definitely DC. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "Rob Morley" wrote in message news:20171214200802.2d0eedf3@Mars... On Thu, 14 Dec 2017 18:18:01 +0000 F news@nowhere wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. 1VA is a very low rating. I'd be inclined to try a generic USB charger and hope it didn't make the lights go bang from moderate over-voltage or because it's DC instead of AC. |
#16
Posted to uk.d-i-y
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AC - DC adapter
On 15/12/2017 09:33, Brian Gaff wrote:
If you are worried, then get an lm317 three terminal regulator and a suitable pot and get it just right on a charger with more volts out, like one of those beefier usb ones. It might get a bit warm. Seems odd to me if its AC though, as leds are most definitely DC. Brian Not worth the effort for such low power. Dropping 0.6v across a cheap silicon diode or two in series will bring a 5v supply down to 4v. -- Regards, Martin Brown |
#17
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AC - DC adapter
On Thursday, 14 December 2017 18:18:05 UTC, F wrote:
Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. 5v supply + 2 diodes NT |
#18
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AC - DC adapter
Dangerous unless you know the diodes can take the current though.
Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! wrote in message ... On Thursday, 14 December 2017 18:18:05 UTC, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. 5v supply + 2 diodes NT |
#19
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AC - DC adapter
On 15/12/2017 09:34, Brian Gaff wrote:
Dangerous unless you know the diodes can take the current though. Brian At 1W total power mostly in the LEDs any rectifier diode like 1N4001 (about 2p each) would be well within its rating 1W @ 4v = 250mA. -- Regards, Martin Brown |
#20
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AC - DC adapter
On Friday, 15 December 2017 10:41:59 UTC, Martin Brown wrote:
On 15/12/2017 09:34, Brian Gaff wrote: Dangerous unless you know the diodes can take the current though. Brian At 1W total power mostly in the LEDs any rectifier diode like 1N4001 (about 2p each) would be well within its rating 1W @ 4v = 250mA. -- Regards, Martin Brown Last month I brought 2,500 of those well the 1N4004A . |
#21
Posted to uk.d-i-y
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AC - DC adapter
On 14/12/2017 18:18, F wrote:
Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a* spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? |
#22
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AC - DC adapter
On Friday, 15 December 2017 09:06:06 UTC, dennis@home wrote:
On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with aÂ* spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? complete nonsense |
#23
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AC - DC adapter
On 15/12/2017 14:11, wrote:
On Friday, 15 December 2017 09:06:06 UTC, dennis@home wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with aÂ* spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? complete nonsense So what do you think it means? |
#24
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AC - DC adapter
On Friday, 15 December 2017 22:10:36 UTC, dennis@home wrote:
On 15/12/2017 14:11, tabbypurr wrote: On Friday, 15 December 2017 09:06:06 UTC, dennis@home wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with aÂ* spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? complete nonsense So what do you think it means? It doesn't say what it means. I don't have mind reading powers. However the conclusion that it means the transformer is unisolated is simply nonsense. NT |
#25
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AC - DC adapter
On 15/12/2017 23:36, wrote:
On Friday, 15 December 2017 22:10:36 UTC, dennis@home wrote: On 15/12/2017 14:11, tabbypurr wrote: On Friday, 15 December 2017 09:06:06 UTC, dennis@home wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? complete nonsense So what do you think it means? It doesn't say what it means. I don't have mind reading powers. However the conclusion that it means the transformer is unisolated is simply nonsense. Just as well I didn't say it wasn't isolated then. However your assumption that it is is based on what it says even though it contradicts itself. That makes your assumption nonsense not mine. |
#26
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AC - DC adapter
"dennis@home" wrote in message web.com... On 15/12/2017 14:11, wrote: On Friday, 15 December 2017 09:06:06 UTC, dennis@home wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. I like the way it says its a "safety isolating transformer" and then tells you pin 1 is connected to the coil end. This implies an autotransformer with a single coil and that is *not* an isolating transformer. When are you taking it apart to see what's actually inside? complete nonsense So what do you think it means? Impossible to say without testing whether its actually an autotransformer or not. |
#27
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AC - DC adapter
On 14/12/2017 18:18, F wrote:
Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a* spade and pin plug. Delighted to have provided so much pre-Christmas entertainment, but I'm still trying to find a replacement. -- F |
#28
Posted to uk.d-i-y
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AC - DC adapter
On Sat, 16 Dec 2017 13:35:30 +0000, F wrote:
On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with aÂ* spade and pin plug. Delighted to have provided so much pre-Christmas entertainment, but I'm still trying to find a replacement. Nearest I can see is a 4.5v one from CPC: PW02731 You would have to cut the cable from the old one and graft it to the new; those spade and pin plugs (NOT speaker plugs) are not that common. -- My posts are my copyright and if @diy_forums or Home Owners' Hub wish to copy them they can pay me £1 a message. Use the BIG mirror service in the UK: http://www.mirrorservice.org *lightning surge protection* - a w_tom conductor |
#29
Posted to uk.d-i-y
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AC - DC adapter
On 16/12/2017 13:53, Bob Eager wrote:
On Sat, 16 Dec 2017 13:35:30 +0000, F wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with aÂ* spade and pin plug. Delighted to have provided so much pre-Christmas entertainment, but I'm still trying to find a replacement. Nearest I can see is a 4.5v one from CPC: PW02731 You would have to cut the cable from the old one and graft it to the new; those spade and pin plugs (NOT speaker plugs) are not that common. Thanks: ordered! -- F |
#30
Posted to uk.d-i-y
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AC - DC adapter
In article ,
Bob Eager wrote: You would have to cut the cable from the old one and graft it to the new; those spade and pin plugs (NOT speaker plugs) are not that common. Loads on Ebay - both line male and female. They were used on car radios too. -- *You are validating my inherent mistrust of strangers Dave Plowman London SW To e-mail, change noise into sound. |
#31
Posted to uk.d-i-y
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AC - DC adapter
In article ,
F news@nowhere wrote: On 14/12/2017 18:18, F wrote: Anyone any thoughts on where I could get a replacement for one of these: https://www.flickr.com/gp/161457453@N02/iv5D72 I've Googled but not found anything. Christmas lights: 240v - 4v 1VA with a spade and pin plug. Delighted to have provided so much pre-Christmas entertainment, but I'm still trying to find a replacement. Finding an exact one with the correct plug may be difficult. If it is just a simple power supply - and not an LED driver/sequencer - any of the correct spec should do if you are up to fitting a matching connector(s) -- *Honk if you love peace and quiet* Dave Plowman London SW To e-mail, change noise into sound. |
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