circuit analysis_2

[Adam2014]

Hi
already , i have been asked for the attachment circuit but i don't have enough answers.
Q1) for the integrator R2,C7 its output is a triangular wave or still constant and why? why we use the shown value ?
Q2) the output is between Vcc/3 and 2*Vcc/3 or between 0 and 5 ?

 

[dougy83]

Q1) for the integrator R2,C7 its output is a triangular wave or still constant and why? why we use the shown value ?

Do you mean R2/C4? It depends. If an LC resonant circuit is connected to the left of C3, then the voltage on C4 will become somewhat stable (should be around half the supply voltage, I guess). If no LC circuit is connected, then the voltage on C4 will charge and discharge between Vcc/3 and 2Vcc/3 at some arbitrary frequency (not critical for this circuit to operate in the application it's designed for).

The output is between ~0 and the supply voltage (Which I've referred to as Vcc above).