Power supply Question

[Zapped]

I need to hook up two circuit boards that both run on 12 volts. They would be running off 1 wall wart transformer. If I did this would i need to do anything to adjust for the power consumption or would all the power be supplied equally by the wall wart?

Thanks

[earthtonesaudio]

If you are doing something simple like powering 2 effects with the same power requirements, in the same enclosure, it is totally fine.  They will each draw 12V, and some current.  If the current draw is below the maximum rating of the wall wart, everything is peachy.

Just like if you had a 1-transistor boost pedal, and added a second transistor gain stage to turn it into a fuzz or distortion pedal, the power supply doesn't care.  The two circuits can happily share power and ground connections, unless you exceed the current capability of your supply, then it will catch fire or explode or something.

Note: I am assuming that you are including power supply filtering on each circuit (caps to ground, maybe a little series inductance or resistance for good measure), AND that you are talking about using an unaltered DC wall wart for power, not an AC wall wart, or a scavenged transformer.  Building your own power supply from scratch is a different beast than just plugging in an adapter.

[Zapped]

Actually it's not for a effect pedal.
A friend of mine wants me to connect two computer boards together and connect them with an unaltered DC power supply.(a small spy cam) I was wondering it this would cause any problems. I know that they will use power as needed, I just don't know if the draw will be too great and might cause an issue. I wasn't sure if i needed to build some sort of power supply or power conditioner.


If I do can someone point me in the right direction.
Thanks,
Tom