Gallery, Projects and General > How do I??

48V lamp

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John Rudd:

--- Quote from: RussellT on November 17, 2015, 08:16:27 AM ---Thanks Andrew

It's not that I can't get a 48V bulb - more that it would be more convenient and cheaper if I could use one from the supermarket.

Russell

--- End quote ---
So why cant you wire the holder from a 240 v supply rather than the 48v one?
That said there's a safety issue involved which is why its 48v to start with....no winners with this one...!  :zap:

RussellT:
Thanks for the suggestions.


--- Quote from: John Rudd on November 17, 2015, 10:35:50 AM ---So why cant you wire the holder from a 240 v supply rather than the 48v one?

--- End quote ---

I could.  First I'd have to add a neutral to the machine etc etc. :bang:

I can't help the feeling that some of the LED lamps out there will probably work at 50V with no modifications - perhaps I'll try one or two - after all even if they don't work I can always use them somewhere else and save electricity which will pay for them.

Bill does your project mean that you've tried connecting straight to the 50V supply?

Russell

John Rudd:
So if you have a 50v supply that must be derived from a 415 transformer?

Either way you have 50v ac, so Bills voltage doubler circuit will work and led lights are a goer....

John Swift:

all the machines I've seen with a low voltage work light
had a either 415V step down transformer with a 25 / 50V secondary
just for the "Lo Vo" light or
had 25/50V a winding on the machines control transformer
like this on a Bridgeport

  John

PS
How about using a 24V automotive light run from the 25V tap


 

Manxmodder:
My Harrison lathe was fitted with a 50volt step down LoVo transformer and was used in that state when I had it running on 3 phase.

Since moving workshop and converting the lathe to a single phase motor I took the step down transformer windings out of the switch box and managed to squeeze in a 240/12 volt toroidal transformer so I  now use 12 volt spot bulbs or the LED equivalents......OZ.

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