Anyone any thoughts on where I could get a replacement for one of these:
I've Googled but not found anything.
Christmas lights: 240v - 4v 1VA with a spade and pin plug.
Anyone any thoughts on where I could get a replacement for one of these:
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...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.
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?
5v supply + 2 diodes
NT
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?
If its ac then why the polarised connections though? Brian
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
Dangerous unless you know the diodes can take the current though. Brian
Each lamp (three sticks of 12) cycles through different colours.
It about the cheapest nastiest connector ever made.
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.
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.
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 :)
Last month I brought 2,500 of those well the 1N4004A .
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?
complete nonsense
Look up 2 pin DIN, if that's what is shown in the picture.
we've a number of Christmas light which use that connector,
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