hello evryone
I want to build a muscle stimulator for a school project, ( I attached the source circuits )
but i decided to change it a little, instead of a signal generator part i want to be able to connect it to an audio source ( like an mp3 player or a computer ) ,
but the output signal become very weak for frequencies under 1000hz and very strong for freqs over 2k,3khz.
tens unit frequencies ranges between 20 to 500hz, i don't understand what the problem is, any idea what should i change/add to make it work for 100 to 1000hz maybe .
thanks
thanks.
I want to build a muscle stimulator for a school project, ( I attached the source circuits )
but i decided to change it a little, instead of a signal generator part i want to be able to connect it to an audio source ( like an mp3 player or a computer ) ,
but the output signal become very weak for frequencies under 1000hz and very strong for freqs over 2k,3khz.
tens unit frequencies ranges between 20 to 500hz, i don't understand what the problem is, any idea what should i change/add to make it work for 100 to 1000hz maybe .
thanks
thanks.
Attachments
-
7.9 KB Views: 9
-
19.5 KB Views: 8