virtual ground summing amplifier integrator …...op-amp integrator circuit vin -vout we know from...
TRANSCRIPT
Phys3330Lecture6
• virtualground• summingamplifier• integrator• differentiator• PIDcontroller
virtualground
virtualground
V≈0()
whyisvirtualgrounduseful?
I=Vin/R1=-Vout/Rf
summingamplifier
summingamplifier
summingamplifierwithscaling
summingamplifierwithscaling
(R1sintheratio1,2,4,8)
opampintegrator
integratorsignals
integratorwithbypassresistor
opampdifferentiator
differentiatorsignals
proportional/integral/differential(PID)controller
proportional/integral/differential(PID)controller