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Newnes Circuit Calculations Pocket Book
book

Newnes Circuit Calculations Pocket Book

by Thomas J. Davies
April 2016
Intermediate to advanced content levelIntermediate to advanced
384 pages
12h 56m
English
Newnes
Content preview from Newnes Circuit Calculations Pocket Book
16 Operational amplifiers
16.1 Open loop amplifiers
The operational amplifier is a high-gain directly coupled voltage
amplifier, having a single output and two inputs, one inverting and
the other non-inverting. The output signal is proportional to the
differential signal voltage between the two input terminals, i.e.
VW
=
A
0
(V
X
- V
2
)
where A
Q
is the low-frequency open loop gain of the operational
amplifier, typically 10
5
. V
x
and V
2
are the two input voltages.
By grounding the positive (+) terminal (see Figure 16.1(a)) the
device can be used as a high-gain inverting amplifier. By grounding
the negative (-) terminal (see figure 16.1(b)) the devic ...
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Publisher Resources

ISBN: 9781483101132