New answers tagged

0 votes

Working with RC Integrator and RC Differentiator

In practice, it is not possible to realize the IDEAL function of an intergator resp. differentiator. In detail: Integrator: The ideal function H(s)=1/sT can only be approximated using an opamp (open-...
LvW's user avatar
  • 25.7k
1 vote

Trying to simulate a basic op-amp intrgrator but cannot seem to find any error in my circuit

You have built a 200 Hz low-pass filter with gain of 10x are feeding it with 45 Hz. So with those values, you will not see any ramps as the ramp is very quick compared to the frequency of the signal. ...
Justme's user avatar
  • 137k
2 votes

Trying to simulate a basic op-amp intrgrator but cannot seem to find any error in my circuit

The integrator is too fast. +12V at the input will produce this input current: $$ I_{IN} = \frac{V_{IN}}{R_1} = \frac{12V}{820\Omega} = 14.6mA $$ Ignoring R2, all this current passes through C1, ...
Simon Fitch's user avatar
  • 28.9k
2 votes

Trying to simulate a basic op-amp intrgrator but cannot seem to find any error in my circuit

Ignoring R2, a 12V input means almost 15mA, so a dv/dt at the output of almost 150V/ms until it saturates. At 20ms/div it will change 10V in about 1/200 of a division. So the ramps are there, just not ...
Spehro Pefhany's user avatar
2 votes

Active Integrator Parallel Capacitor in Feedback

By adding C2, all you've done is change feedback capacitance from 10nF to 1010nF. This will not make the integrator better at low frequencies, leaving behaviour at higher frequencies the same; it ...
Simon Fitch's user avatar
  • 28.9k

Top 50 recent answers are included