Hi Sean, I really just wanted to know if the "electronic" part is equivalent to an inductor* in serie with a resistor** and a voltage source. * =3D as I can measure on the real pickup with a ohmeter. ** =3D as I can measure on the real pickup with a inductance meter. I am very well aware of the other problems, I just aim to experiment with impedance, filters and such, to know if I e.g. can expect the same voltage drop or loss of high frequences on the real pickup. Say I have a real pickup which measures 200 ohm resistance and 50 mH of inductance. At 2000 RPM I get a 10V peak to peak sinusoidal waveform withou= t any load. So I get into the simulation software, create a 10Vpp sin oscillator, put i= n serie a 200 ohm resistor and a 50 mH inductor, I still get that 10Vpp simul= ated signal. Now I add e.g. a resistor to the simulated circuit, and I measure a certain voltage drop. If I add the same resistor, but this time for real, to the pickup, will I g= et the same voltage drop? I just want to experiment with the design of a interface circuit without possibily doing it on the real thing, as it's in certain aspects impossible= .. With kind regards, Mario At 16:52 2017-03-25, Sean Breheny wrote: >Hi Mario, > >It depends on what you are using the output of the sensor for. If you just >want to use it to count gear teeth then the voltage source alone would >probably be enough. If you care about the shape of the pulse it produces >then you would care about the inductance but you would probably care about >other things, too, like the shape of the piece of metal it is sensing. > >Sean > > >On Sat, Mar 25, 2017 at 10:58 AM, Electron wrote= : > >> >> Hello, >> >> is it OK to assume that I can model a variable reluctance sensor (pickup= ) >> in Spice and similar as an inductor with in serie a resistor and a volta= ge >> source? >> >> And is it OK to assume that the resistor value for my model must be the >> resistance I measure at the pins of the pickup, and the inductance value >> I have to use for my model is the one I measured with an inductance mete= r? >> >> Voltage of course will be proportional to simulated frequency / rotation= al >> rate. >> >> Thank you. >> >> Cheers, >> Mario >> >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> >--=20 >http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .