
   
in SIGNAL CONDITIONERS
Inverting ampli er using opamp
Enersol ISO 80369 Small Bore Reference Connectors
VISIT SITE
Ad
Opamp inverting ampli er.
An inverting ampli er using opamp is a type of ampli er using opamp where the output
waveform will be phase opposite to the input waveform. The input waveform will be
ampli er by the factor Av (voltage gain of the ampli er) in magnitude and its phase will
be inverted. In the inverting ampli er circuit the signal to be ampli ed is applied to the
inverting input of the opamp through the input resistance R1. Rf is the feedback resistor.
Rf and Rin together determines the gain of the ampli er. Inverting operational ampli er
gain can be expressed using the equation Av = – Rf/R1. Negative sign implies that the
output signal is negated. The circuit diagram of a basic inverting ampli er using opamp is
shown below.

Inverting ampli er using opamp
The input and output waveforms of an inverting ampli er using opamp is shown below.
The graph is drawn assuming that the gain (Av) of the ampli er is 2 and the input signal is
a sine wave. It is clear from the graph that the output is twice in magnitude when
compared to the input (Vout = Av x Vin) and phase opposite to the input.
Inverting operatinal ampli er waveform
Practical inverting ampli er using 741.
What is Machine Learning?
Learn about the three types of machine learning
MathWorks
Learn More
A simple practical inverting ampli er using 741 IC is shown below. uA 741 is a high
performance and of course the most popular operational ampli er. It can be used in a
verity of applications like integrator, differentiator, voltage follower, ampli er etc. uA 741
has a wide supply voltage range (+/-22V DC) and has a high open loop gain. The IC has an
integrated compensation network for improving stability and has short circuit protection.
Practical inverting ampli er using 741
Signal to be ampli ed is applied to the inverting pi (pin2) of the IC. Non inverting pin
(pin3) is connected to ground. R1 is the input resistor and Rf is the feedback resistor. Rf
and R1 together sets the gain of the ampli er. With the used values of R1 and Rf the gain
will be 10 (Av = -Rf/R1 = 10K/1K = 10). RL is the load resistor and the ampli ed signal
will be available across it. POT R2 can be used for nullifying the output offset voltage. If
you are planning to assemble the circuit, the power supply must be well regulated and
ltered. Noise from the power supply can adversely affect the performance of the circuit.
When assembling on PCB it is recommended to mount the IC on the board using an IC
base.
Sponsored Content
Enjoy Great Discounts and
Save Your Money on Wake t
Mattress.
Coding Classes for Kids Age 618 from IIT/Harvard Team
The Most Successful Attorneys
In Hyderabad - See The List.
Invest in Amazon and others
and create a second income.
Calculate your earnings
An Investment in Tesla and
others in 2021 could make
earn a second income! Start
Invest in Amazon and others
with only 200$ from
Hyderabad for an extra income
campk12.com
America's Top Attorneys
wake t.co
marketingvici.com
Vici Marketing
marketingvici.com
Recommended by