i do not know anything about electronicsThe 500 mA ratings on the DC sources you looked at only express how much current the sources can supply (without overheating or shutting down); the actual current supplied will be only what your project draws. So, while a 500 mA source is certainly more than you need for the job, it absolutely will NOT force excessive current into your device.
If you truly don't know anything about electronics (and your comments indicate you don't), then you absolutely SHOULD NOT be fooling around with iontophoresis. This stuff is not for amateurs, and especially not for beginning amateurs; leave it to the professionals.i do not know anything about electronics
i need this device for iontophoresis
20mA + is dangerous for me, is it possible to get exactly 20mA with 12-30V ?
Thanks for replay AlbertHall, so if i use correct voltage battery it does not matter how much is ampere ?You should use a battery (or batteries) for this on safety grounds. You are connecting your body to the electrical power and if you use a mains powered supply you are at risk should that supply develop a fault. Any battery, or combination of batteries, supplying the correct voltage will do the job.
Incidentally, it is also important that the two bowls do not touch each other and they are very, very close in the video. If they touch this will stop the treatment and quickly discharge the battery.
Yes, i am begginer in this subject but i know how much voltage and mA i needIf you truly don't know anything about electronics (and your comments indicate you don't), then you absolutely SHOULD NOT be fooling around with iontophoresis. This stuff is not for amateurs, and especially not for beginning amateurs; leave it to the professionals.
Hello bertus, i have read your post but i am very begginer and do not know how to do this and now i am trying to find and buy device which is already ready for use.Hello,
Did you read post#12?
There I described how you can limit the current.
Bertus
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