1.52 A voltage amplifier with an input resistance of 20 k, an output resistance of 100 , and a gain of 1000 V/V is connected between a 100-k source with an open-circuit voltage of 10 mV and a 100- load. For this situation: (a) What output voltage results? (b) What is the voltage gain from source to load? (c) What is the voltage gain from the amplifier input to the load? (d) If the output voltage across the load is twice that needed and there are signs of internal amplifier overload, suggest the location and value of a single resistor that would produce the desired output. Choose an arrangement that would cause minimum disruption to an operating circuit. (Hint: Use parallel rather than series connections.)

52 9 - 1.52 A voltage amplifier with an input resistance of 20 k, an output resistance of 100 , and a gain of 1000 V/V is connected between a 100-k source with an open-circuit voltage of 10 mV and a 100- load. For this situation: (a) What output voltage results? (b) What is the voltage gain from source to load? (c) What is the voltage gain from the amplifier input to the load? (d) If the output voltage across the load is twice that needed and there are signs of internal amplifier overload, suggest the location and value of a single resistor that would produce the desired output. Choose an arrangement that would cause minimum disruption to an operating circuit. (Hint: Use parallel rather than series connections.)

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images - 1.52 A voltage amplifier with an input resistance of 20 k, an output resistance of 100 , and a gain of 1000 V/V is connected between a 100-k source with an open-circuit voltage of 10 mV and a 100- load. For this situation: (a) What output voltage results? (b) What is the voltage gain from source to load? (c) What is the voltage gain from the amplifier input to the load? (d) If the output voltage across the load is twice that needed and there are signs of internal amplifier overload, suggest the location and value of a single resistor that would produce the desired output. Choose an arrangement that would cause minimum disruption to an operating circuit. (Hint: Use parallel rather than series connections.)

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