Looking for Enlarger in Melbourne

[CaptHowie]

So the options are either a 12V DC adapter or to use a 220/240V -> 120V Step-Down Converter; a few questions with these two approaches. In regards to the 12V adapter, how would I connect the adapter up to the enlarger or a timer? The enlarger uses a grounded US electrical plug, but I notice the adapter on Jaycar uses a two-pin connector. Would I have to strip the wire and solder an Australian AC female plug to the adapter? Also, if the lamp only needed 12V why would it mention the 82-85W on the back plate? In regards to a step down transformer, I know the input on the back plate is 120V AC, but how would that work with the 82-85W mentioned for the lamp, or if the lamp was 12V?

Thanks for the help

Edit: Also, the halogen transformer mentioned, what would be an example of this?

 

[munz6869]

Presumably, if the enlarger originally ran off a US 120VAC supply, it has a transformer in it, or other electronics (voltage divider, regulator, etc) to provide the lamp with the correct voltage. If you were to replace the lamp/supply with a 12V system, you would need to bypass all that: you would connect the 12v transformer between your timer and the enlarger.

An example of a Halogen transformer could be the one Raoul linked to, or a domestic switch mode device like you find in the ceilings of modern homes - as long as it's rated at the same current (domestic transformers often supply 11.5V instead of 12, and so the lamp lasts longer, runs a bit yellower!)

Marc!

 

[raoul]

Yes - wire the transformer straight to the lamp on one end -> it then plugs into your timer. Simple.

 

[CaptHowie]

Ok, I think the C6700 and the C7700 are exactly the same electrically. I've attached the manuals which have the specifications, and both have 12V 100W Halogen lamps, and the power supply is listed. If you could confirm that would be great Thanks for all this help, doubt I would have figured it out.

http://dl.dropbox.com/u/10765/C6700.PDF
http://dl.dropbox.com/u/10765/LPL_C7700_Pro_Manual_OCR.pdf

 

[raoul]

Buy a 12v transformer as indicated.

On page 5 (6700) - picture 10, part 19 is the lead from the new transformer. Discard anything else that was there before.
On page 6 - picture 1, note the transformer, this is now your new halogen transformer. use this in the exact same way as pictured.