Power supply for all

[zener]

I have a power supply that can switch from 3, 4.5, 6, 9 and 12v. It has a rating of 750mA â€" 1 A as stated in the label. I can’t draw the schematic but here it goes: 220v â€" transformer â€" rotary switch â€" 4 1N4001 diodes connected forming a square or a diamond â€" 1K resistor and 1000 capacitor across the negative and positive rail.  

Can I run several stompboxes on it at 9v (in parallel of course). If yes, how many? My friend said that I might need a bigger ampere transformer for this to power several devices at the same time.

Thanks.

Zener

[mattv]

750mA should be enough to power several stompboxes. Measure the current draw for each of the pedals (check the FAQ), add the numbers up, and if the total is less than 750mA, you're safe.

[Thomas P.]

Some time ago I had a paper from BOSS with all their new stuff described along with the powerconsumption of each pedal. I believe all of their overdrive/distortion pedal had consumption of less the 10mA.
If you do the quick math it should be enough for at least 75(!) overdrives (imagine the in-your-face sound of it :wink: ) - just kidding!

[smoguzbenjamin]

I think 75 overdrives'd just sound like crap.
But anyway this question comes up a lot... Maybe I'll write about it on my site!

[zener]

Thanks guys.

75 stompboxes at once :roll:   ,

Got to have boosters eveywhere :wink:

Zener

[aron]

Someone put a bunch of stompboxes together.... it was written up. It was a huge number. They said it sounded pretty good up until a point, then it was too noisy.