I need help understanding the difference in waveforms when connecting resistor 1 in parallel with the negative voltage in a 741 op-amp comparator circuit. In addition what effect does changing values on either resistor 1 or resistor fraction (Rf) on a two-input summing amplifier have? If more information is needed please let me know.
Edit
Would both figure 41.1 a and b have the same output sine waves and if so why?
Figure 41.3 has a voltage peak to peak of 8 volts when all resistors are 10k. R1 as 22k, voltage peak to peak is 5.80 V and 17.6 when Rf is 22k ohms, while R1 is 10k ohms.
Edit
Would both figure 41.1 a and b have the same output sine waves and if so why?
Figure 41.3 has a voltage peak to peak of 8 volts when all resistors are 10k. R1 as 22k, voltage peak to peak is 5.80 V and 17.6 when Rf is 22k ohms, while R1 is 10k ohms.
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