Explanation: To reduce the output offset voltage to zero, the offset minimizing resistor is used to minimize the effect of input bias currents on the output offset voltage. However, when the inputs are DC voltages, the offset compensating network must be used. 10. State the application in which summing, scaling or averaging amplifiers are used?
A. Multiplexers
B. Counters
C. Audio mixers
D. All of the mentioned
Answer:A
Explanation: To reduce the output offset voltage to zero, the offset minimizing resistor is used to minimize the effect of input bias currents on the output offset voltage. However, when the inputs are DC voltages, the offset compensating network must be used. 10. State the application in which summing, scaling or averaging amplifiers are used?
A. Multiplexers B. Counters C. Audio mixers D. All of the mentioned
Explanation: Summing, scaling or averaging amplifiers are commonly used in audio mixers, in which a number of inputs are added up to produce a desired output. 11. The following circuit represents an inverting scaling amplifier. Compute the value of RoM and VO?