Hello all!
I am trying to simulate a circuit from a book called "DESIGN AND DEVELOPMENT OF MEDICAL ELECTRONIC INSTRUMENTATION : A Practical Perspective of the Design, Construction, and Test of Medical Devices " by DAVID PRUTCHI and MICHAEL NORRIS.
This is the circuit:
In the book they say that the output at the heart (see the picture) should be:
But I don't get any output in that point, the voltage is 0 continuosly:
I tried to check the voltage in a point after the oscillator part, and the output is a constant aprox 2.2 V, so I guess the oscillator part is not working properly, and I don't know what the problem is. Maybe something should be changed, added.
Can somebody tell me, by looking at the circuit, if the oscillator part looks OK or not?
If anybody uses OrCad and wants to try a simulation of the circuit, I uploaded the OrCad project for you:
Please anybody help me. Would be so appreciated.
Thank you
PS: the book doesn't provide much more information about the circuit than what I told you, but if anybody wants to take a look at the book just tell me and I will upload it for you.
Cheers
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