Actually, I am trying to find a power supply for a vintage guitar effect pedal: Ibanez cs-505 which runs on 2 9v batteries but that is the only info available.
2007-03-15 06:57:16 · 4 answers · asked by Actaeus 1 in Science & Mathematics ➔ Engineering
Short answer is, not much.... depends on the type of battery. Here's a datasheet from Energizer on their alkaline 9V battery.
http://data.energizer.com/PDFs/522.pdf
From there, it looks like 300mA or so is the most it can supply... but don't expect the battery to last very long at that level.
A Ni-cad/ni-mh has lower internal resistance, so can put out more current, but they tend to have lower capacity. (around 200mhA vs 600mhA or so for alkaline)
So, you might be OK with a power supply that can supply more then 300mA or so... but, expect more noise unless the power supply is very well regulated.
Oh, and if you are going to listen to the previous poster and use a rechargeable battery, keep in mind lots of cheep
"9v" ni-cad batteries are actually only 7.2V.
2007-03-15 14:30:05 · answer #1 · answered by RobK 2 · 1⤊ 0⤋
Mah Of 9v Battery
2016-11-07 06:43:26 · answer #2 · answered by jehanna 4 · 0⤊ 0⤋
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It should be able to work - though not quite a long. Definitely make sure it's a quality 9V that's fresh so you get the most out of it. Cheaper ones will likely fail even faster. Bring an extra too.
2016-04-03 05:55:51 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The amount of current they provide is determined by the load on them. The amount of time they can provide a given current is determined by their 'amp-hour' (or 'mA-hour') rating.
Why not just buy a couple of rechargeable Ni-Cads and a charger instead of dicking around trying to get a ±9V supply to work?
HTH ☺
Doug
2007-03-15 07:42:31 · answer #4 · answered by doug_donaghue 7 · 1⤊ 1⤋