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Results tagged with amplifier
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user 126841
An amplifier can be used to adapt the range of a signal to a requirement, to make it more robust for transmission, or to satisfy interface requirements (like input/output impedance).
1
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1
answer
329
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Why do we need external and internal reference simultaneously in lock in amplifier?
IN this note on lock-in-amplifier, I see that there is external which we phase lock the internal reference to. Then the internal reference is used for phase sensitive detection. …
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0
votes
1
answer
502
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Stability of a negative feedback amplifier
Consider a negative feedback amplifier whose open loop gain is A(jw) and whose feedback factor is F(jw). … my question is for frequency between fp and fg A(jw)F(jw) is not -1, how could the amplifier be not stable?
thanks! …
- 59
2
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3
answers
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BJT amplifier negative feedback question
This is a BJT amplifier we have learned
I read from the book that the feedback type of it is voltage series negative feedback. …
- 59