HI friends i just complete my diploma in electronics.. and my mom is physio therapist so i want to gift her a TENS (Transcutaneous Electrical Nerve Stimulation) but i dont have a any idea about tens. so please help me in this condition...
Making one is not too hard, certainly if you're able to borrow
a unit to reverse engineer.
Certifying one is much more effort and risk of failing at it,
but giving your Mom an uncertified and somehow-faulty
one to use on patients and get herself a nice lawsuit, is
worse. You might want to think that through.