First of all, I am not an engineer, so I will need someone to explain to me some basic information about how to go about using an LM334. Any help that can be provided would be greatly appreciated.
I want to do a study on humans involving bipolar stochastic Galvanic Vestibular Stimulation (GVS) and am in the process of purchasing an Analog Stimulus Isolator to provide the current that I need. For added safety to ensure that individuals participating in the study do not receive any amplitudes of current greater than +/-3 mA, I want to provide some sort of current limiter for protection. My idea for the design is as follows:
PC -> DAQ (NI USB-6009) -> Stimulus Isolator -> AC Power Coupler -> Current Limiter (LM334/NOPB) -> 2 electrodes at the mastoid processes (binaural)
I would like to know:
1) Can the LM334/NOPB be used as a current limiter, and is it the most appropriate device for me to use?
2) Can the LM334/NOPB be programed to reliably limit the bipolar current to the +/- 3mA level that I am shooting for? Remember, this is just for added safety. The actual current levels that I intend to provide to subjects will probably be less than +/- 1mA.
3) How easy is it to program the LM334 to cut off at the level I want (i.e. What type of additional software and coding experience is needed?)?
Please let me know if you have any advice or can steer me in a better direction to accomplish my task. I am a bit lost as to how this device works. Thanks so much.
