I’m a student in electrical engineering and working at the Notre-Dame Hospital (CHUM). I’m working on a device that will stimulate the fingertips so that the patient can receive mechanical stimulis, with which fMRI (imaging of the brain’s function to help the doctor operates without touching the functionnal area).
What we’ve come up with so far is using piezoelectrical transducer and use the sofware to send wav files to the piezo transducer. but the problem is that those piezo needs huge amount of voltage to produce small (Âµm) displacement. So what I would like to know from you guys is the normal output of a PC sound card… is it Â±600mV, 0-600mV, Â±5V,… I would need this to be able to build an amplifier that will get the voltage to around 400V or more. I know I could go check it out of my PC, but for now I’m designing the circuit, so I need a baseline since their’s SOOOOOOOO much to think about and I can’t find this info nowhere.
A huge thank you