Author Question: If all four input resistors to a summing amplifier are 2.2 k and the feedback resistor is 2.2 k, ... (Read 86 times)

j.rubin · **on:** Jul 28, 2018

If all four input resistors to a summing amplifier are 2.2 k and the feedback resistor is 2.2 k, then the gain equals ________.

A) 1 B) 4 C) 2.2 D) unknown

Question 2

If all four input resistors to a summing amplifier are 2.2 k, the feedback resistor is 2.2 k and all four input voltages are -2 V, the output voltage equals ________.

A) 10 V B) 8 V C) 2.2 V D) 2 V