240v to 12v transformer
Submitted: Friday, Mar 01, 2013 at 15:08
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100833
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Doddy
Hi, I have a HLPS - 220 transformer in my 2004 Majestic caravan which cuts 240v down to 12v for van use. It has failed and local suppliers want to sell me units which either have chargers (have separate battery pack so not required), little 5 amp jobs or 300amp monsters. Hybralec no longer import these transformers from China. Can anyone help me with a manufacturer or brand I can ask for which is a replacement for my 22 amp Hybralec ?
Regards Doddy
Reply By: Imperial - Friday, Mar 01, 2013 at 16:33
Friday, Mar 01, 2013 at 16:33
If you have a charger why worry?
Mine failed and I simply discarded it. This means lights run off battery but this has never been an issue. Regrettably I have no technical knowledge to support my actions but after several years of practice my solution has not caused any dramas and our van is used regularly.
Regards
KenK
AnswerID:
505833
Reply By: Ross M - Friday, Mar 01, 2013 at 17:27
Friday, Mar 01, 2013 at 17:27
Doddy
For under a hundred you can buy a 12 multi stage switchmode battery charger from Jaycar. Is is adjustable for 6amp and 12 amp output and if used in conjunction with your van battery it will keep it charged and run the internal 12v lights.
Even if the battery discharges a bit it will top it up again when the lights are off.
Higher output chargers are also available. Probably cheaper than the expensive Hybralec stuff.
I never bought any of their gear as I found it very expensive.
Ross M
AnswerID:
505836
Follow Up By: Doddy - Saturday, Mar 02, 2013 at 09:52
Saturday, Mar 02, 2013 at 09:52
Thanks for your comments. I have a battery box with inbuilt charger which is charged from 240v and wired to central switching to supply 12v through van circuit. Because of the design you cannot use 12v power while it is charging so another charger would mean virtually rewiring. I'm happy with the present setup i.e. When 240v available I use that with the DC power supply lighting the van. At the same time I can charge the battery off a 240v pp in the front boot and use the battery to run 12v when off road. So I am looking to replace the failed Hybralec with a 240AC to 12DC converter of at least 22 amps.
Doddy
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782785
Reply By: Member - Boobook - Saturday, Mar 02, 2013 at 10:04
Saturday, Mar 02, 2013 at 10:04
22 Amps is a lot.
Anyway Jaycar have 20A switching ones for $100 or 30A ones for about $280
Alternatively there are lots on ebay. Meanwell power supplies sound cheap and cheerful but they are
well regarded and inexpensive.
AnswerID:
505880