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Battery power supply design?


tomteriffic

Question

Posted

I recently got a Trace-Elliot Transit A pedalboard,.  It's just the thing for your pasty white folk-singer type, such as myself.  It doesn't have any provision for battery operation, though.  I'm thinking that I could seriously reduce setup time, hunting for AC outlets, etc. if I could come up with a battery power supply for the thing.  There's one very occasional gig I do where not having to hunt up an additional outlet, even though it's available someplace would be a life-saver.  Also, I'm playing in a "cavalcade of stars" (HAH!) Tom Petty tribute tonight and want to use it, but don't want to slow the show down during the transition.  Seems unavoidable, though. My general idea would be a bank of 3 or 4 rechargeables (I have the batteries and charger) in order to provide enough current to light the board up, possibly attach-able to the board via velcro and an easy-open enclosure to change the batteries out.  I'm pretty sure any parts I need can be had at Parts Express, just down the road from me, but I'm otherwise fuzzy on design ideas. 

Any pointers, tips, potential problems, etc. would be much appreciated.  BTW, I'm pretty sure that a single 9 volt would last about no time at all or wouldn't provide enough current.  So a hillbilly engineered battery clip taped to a plug somethingorother probably isn't in the cards.

8 answers to this question

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Posted

The only issue I had with the Volto is they are not Isolated. I could not run my Phase99 through it with other pedals, because you could always hear it. Non of the other pedals seem to have the same issues. 

Posted

Take a look at the amount of current supplied by the AC adapter. That will give you an idea of how many batteries you might need. Wouldn't be a tough thing to design and build. Shoot me a PM if there is anything I can help you out with.

Posted
On 10/22/2018 at 2:03 AM, Bloozguy said:

Take a look at the amount of current supplied by the AC adapter. That will give you an idea of how many batteries you might need. Wouldn't be a tough thing to design and build. Shoot me a PM if there is anything I can help you out with.

Apparently the Volto is out of production.  The wall wart is rated at 1 amp.  If memory serves, about the best you can hope for is 300mA  out of a good 9 volt.   Assuming that the pedalboard doesn't draw that whole 1 amp, I ought to be good with 4 9-volts, right?  Now... series or parallel?  I'm getting old.  I used to know that without thinking.  ETA, OK, I thought.  Parallel.

Posted

What about those cellphone recharging battery packs? Or RC car battery packs? I have no idea if either would work, but maybe?

Posted
1 hour ago, hamerhead said:

What about those cellphone recharging battery packs? Or RC car battery packs? I have no idea if either would work, but maybe?

The cell phone battery packs are only 5 VDC, but there may be RC packs that are the right voltage.

Posted
3 hours ago, tomteriffic said:

Apparently the Volto is out of production.

I have a Volto that I am not using at the moment. You're welcome to try it out just to see if the battery idea will work for you. Let me know.

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