1 markOperational Amplifiers
CAPE Physics Unit 2 · 2001 · Paper 2 · Question 2(b)
State what feature allows the gain to be reduced.
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Practise this questionOther parts of this question
- 2(a)Draw a circuit diagram to show how the operational amplifier could be used over a wider range of frequencies at a reduced gain.[3 marks]
- 2(c)State what adjustment can be made to your circuit to lower the gain.[2 marks]
- 2(d)State what effect(s) this would have on the amplifier.[2 marks]
- 2(e)Given that the closed loop gain is related to the open loop gain by A = A_0 / (1 + β A_0), where β is a negative fraction of output fed back to the input,…[2 marks]
More practice: the rest of this paper · more Operational Amplifiers questions · all CAPE Physics Unit 2 past papers