Op-amp circuit analysis, a great god help below the detailed analysis of the function of the circuit. Thanks, diagram of diode as the photoelectric converter, resistance capacitance in this picture without detailed numerical, just want to know how to calculate, op-amp how to calculate the level before the op-amp how to calculate, after c11, c13, the role of c14, r10 and r11, r12, the role of r13?

CodePudding user response:

Are you a single power supply, the resistance is want to give a reference voltage comparator, only to make position on certain voltage fluctuations, rather than fluctuations remain at 0 v or VCC

CodePudding user response:

Your photodiode pd direction should be inside out, unless you are APD, and the capacitor C11 here is wrong, c13, C14 capacitance should be at the level of pf, is for the sake of high frequency performance is better,

CodePudding user response:

1. Ac amplifying circuit, enlarge the small signal of the photoelectric cell, the first level can series 10 uf capacitance, every direct,
2. Single power supply opa, if you don't set the benchmark, ac signal distortion, so you need to set up datum, usually VCC/2. The signal on the swing,
3. The general resistance level set K, dozens of K, 100 K and 100 K, optional can ensure the op-amp input datum,
4 C11 is coupling, every direct, generally the nF level
5. C13, C14 is op-amp compensation, compensation the temporary not clear how to calculate

CodePudding user response:

C11 right end cut off and C11 connected to U5B 6 feet

CodePudding user response:

1. The two op-amp are light signal amplification, r10 and r11, r12, r13 is the limitation on the dc signal component,
2. C11 direct pay,
C13, C14 r16 and r17 filter circuit, the signal filtering the high frequency components, so usually is very small,