Position: Index > Unclassified >

Improved non-inverting integrator

2017-09-01 05:45  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


In the circuit in Fig. 1, ICla produces the integral term required but also has the side effect of producing a proportional term not required, so this term is subtracted by IClb leaving a pure integral. If the ratio R2/R5 does not exactly match the ratio of R3/R4, the subtraction will not be complete and a small amount of the proportional term will reach the output. The result of this with a square wave input is shown in Fig. 3a as small steps in the output waveform at points X and Y. This effect can be completely removed by using the simplified circuit shown in Fig. 2. Here the signal is pre-inverted by ICla, then fed to a standard inverting integrator IClb.
Improved non-inverting integrator

The result is a non-inverting integrator with the advantage that the unwanted proportional term is never produced, so it does not need to be subtracted.



Reprinted Url Of This Article:
http://www.next.gr/oscillators/square-wave/improved-non-inverting-integrator-l12107.html