Telescope 12V supply for fan

[meddyliol]

Does anyone know where I can get a 12V power supply to drive a 'scope cooling fan? I could knock one up but to be honest I cannot be arsed.  

Thanks

Brian   

[Avocette]

12 volts fans (of the type that are fitted inside PCs) will usually work happily from about 6 volts upwards. People often use a speed adjuster (available as a PC compnent) if they have a full 12 volt PSU since vibration is reduced as you reduce speed. You could use just about any spare PSU to do the job.

[damnut]

As above really, friend has a Li battery pack powering 3 silent fans at bottom of 14"dob mirror cell.

[meddyliol]

Thanks for that, why didn't I think of it  . Come to think of it I might have an old PC one knocking about.

Cheers

Brian

[nicoscy]

You could always get something like this.

I use something similar for my 12" dob cooling fan.

[meddyliol]

You could always get something like this.

I use something similar for my 12" dob cooling fan.

That looks OK, a little pricey though but definitely worth a look. I just thought, the 12V portable car jumper would do the job, I used to have one and it only cost £20. The ones these days are around the same price as your suggestion. Am definitely going to look into this.

Thanks for you reply

[nicoscy]

Dig around on Amazon. Plenty more and many cheaper. I just used one as an example as the unit I use is similar (cheaper) but discontinued now...

These power packs last for 500 recharges but never leave home when charging them. On *extremely rare* occasions they have been reputed to catch fire....

[nicoscy]

Here's a better priced one.