Hello all, i was trying to simulate a monophasic defibrillator and the circuit that does protection for each sensor attached to the body of the patient , in my simulation i did that by using some capacitors of 4pF, which i measured in the real life. the RLC circuit is basically the defibrillator , giving the high voltage spike, and the resistors is the human body. the circuit i did as protection is this shown in the picture, where i use inductors to slow down the current during that spike and the capacitor in parallel absorb high transient spike, while lowering also the voltage on the 2 sensors. Important thing u gotta consider is that all the measures i make dont have gnd as reference, so i got a voltage difference beetwen 2 sensors, the measurement i make, i make it beetwen 2 different sensors. So i was asking myself , is that circuit fine in ur opinion?, simulation looks good. Secondly i had another question, how i could implement it in real life? like each sensor have 4 different wires , i need to do a circuit protection for each wire? like each wire attached to the second sensor gotta have its own capacitor, inductor and tvs diode right?. As last i had also another question, which is in the case i attach only 2 sensors out of 3 how i can make my protection circuit work? if its always connected from a wire of a sensor and another?, thanks, in case u got any question tell me i can explain more

 

for the last question i made, i guess i found a way, separated the circuits and made the simulation again, so in case they attach a single sensors nothing happen cus there is no voltage difference beetwen 2 sensors, in case they attach 2 sensors or 3 its limited anyways the value (simulation shows that atleast)

 

ah another thing i forgot to say, obviously these sensors need to work during normal use, like the circuit i make needs to keep sensors working, registering health parameters of the patient correctly etc.