adding a 12 volt power supply to a stereo receiver

[Kyle B]

Hello all!

I am new to the forum and I am an amateur when it comes to electronics, but I know some of the basics.

My idea is this: I have a new pioneer home theater receiver that did not come with a switched 120 volt output like my previous one and I want it to switch on a 120mm 12vdc case fan that will be mounted on the rear of the cabinet where the receiver resides. I know about the power strips that sense a current draw that switches on separate outlets on the strip, but i want to minimize clutter and expense. I would like to install a 12 volt DC transformer inside the receiver housing that piggybacks the 120vac inlet. I am considering using an adapter that came with my kids powerwheels, but it might be too big for the case. The fan I'll be using draws .25 amps @ 12vdc. There are $5 12vdc adapters on ebay with 2000ma current ratings that are smaller than the powerwheels adapter, but would they be sufficient to run the fan(s) for hours at a time?

Thanks,
Kyle

 

[alec_t]

Any good quality regulated 12VDC adapter with a continuous current rating > 0.5A or so should be ok.

 

[audioguru]

DO NOT put a 60Hz transformer inside an audio receiver because it will probably radiate its 60Hz into the audio signals. The 60Hz might even interfere with the video.