Power for fans on my dob?

[pgc hunter]

After realising my mirror is 2" thick, I figured I may have thermal problems while observing so decided to get the fans on my dob working. It has an RCA jack, but the question what do I need to get it working?

From what I've researched, a 12V power supply will work but not sure what type. Looking at the DSE website I found this:

http://www.dse.com.au/cgi-bin/dse.st...uct/View/M9941

Here's a pic of the connection to the fans:


cheers

[DavidU (Dave)]

They are wired in parallel so a 12v supply like you have posted would be fine.
red + black -
Those B Adcock mirrors are fantastic.

[JethroB76 (Jeff)]

Is there a reason you want a mains powered supply, and not a battery?

[pgc hunter]

Originally Posted by JethroB76

Is there a reason you want a mains powered supply, and not a battery?

to be honest, i have absolutely no idea on this planet what/how I need to get those fans spinning. A battery pack would be ideal, but what cables would I need? Its an RCA jack, but do battery packs come with RCA cables, and then there is the question of size of pins. THe hole on the jack measures 3mm across.

[mill (Martin)]

You can get these rca connectors from DSE and Jaycar and just about anywhere if you make a cable yourself then you can make it from banana plugs to RCA with normal speaker wire.
Positive is the middle contact, negative the outer contact.