Question

Explain using theory, why does the simulation result is shown as followed

Summing Amplifier

Rf Ra Rb Vo VcM Simulation condition Transient simulation (Vo vs Va,b,c) Amplitude 0.1V offsetV Frequency-1KHz Amplitude 0.05V -5V offset 5 Frequency 2KHz Amplitude 0.1V/0.2V/0.3V offset5 V Frequency 1KHz U1 R1 6 OU 20k R3 2 UA741 20k R4 R2 20k 47K V4 V5 V6 V1 cFREQ ~) VAMPL = 0 FREQ = 2k VAMPL = FREQ = 1k AC=1 GND PARAMETERS

Answer 1

In the below snapshots the theory is explained in detail. Each signal has a DC offset and an AC component on top of it. First the DC offset at the output is analyzed followed by AC component at output.

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