Bandwidth Problem: Increase Gain & Keep Constant

  • Thread starter Thread starter greg997
  • Start date Start date
  • Tags Tags
    Bandwidth
AI Thread Summary
Increasing bandwidth while maintaining a constant gain in a circuit with a noninverting op amp can be achieved by using multiple amplifiers in a cascaded configuration. For instance, two amplifiers with a gain of 10 can provide a greater bandwidth than a single amplifier with a gain of 100. Additionally, using four amplifiers with a gain of approximately 3.2 can yield a similar overall gain while enhancing bandwidth. This approach allows for the desired gain without sacrificing performance. Testing the configuration in simulation software like Multisim is recommended for practical verification.
greg997
Messages
105
Reaction score
2
hi, I've got simple circuit with noninverting op amp. There are two resistors by which gain is set. And as far as I know the product of bandwidth and gain constant. That is, if we increase the gain the bandwidth decreses and if we decrease the gain , bandwidth increses. The problem is that I am supposed to add an extension to that circuit that would increase the bandwiidth but the gain would stay the same, let's say 100. How is that possible? Thanks to everyone wishing to help me with this.
 
Engineering news on Phys.org
Yes, you can do that.

Two amplifiers with a gain of 10 will have a greater bandwidth than one with a gain of 100.

If you used 4 amplifiers with a gain of 3.2 you would get a gain of 3.2 * 3.2 * 3.2 * 3.2 which is about 105 and that setup will have a much better bandwidth than one amplifier with a gain of 100.
 
Thanks awfully , firend. I will try to test it in Multisim today.
 

Thread 'Why does the amperage go real high if there is a low voltage short?'

I used to be an HVAC technician. One time I had a service call in which there was no power to the thermostat. The thermostat did not have power because the fuse in the air handler was blown. The fuse in the air handler was blown because there was a low voltage short. The rubber coating on one of the thermostat wires was chewed off by a rodent. The exposed metal in the thermostat wire was touching the metal cabinet of the air handler. This was a low voltage short. This low voltage...
View full post »
Thread 'How Does Jaguar's 1980s V12 Dual Coil Ignition System Enhance Spark Strength?'

Thread 'How Does Jaguar's 1980s V12 Dual Coil Ignition System Enhance Spark Strength?'

I have come across a dual coil ignition system as used by Jaguar on their V12 in the 1980's. It uses two ignition coils with their primary windings wired in parallel. The primary coil has its secondary winding wired to the distributor and then to the spark plugs as is standard practice. However, the auxiliary coil has it secondary winding output sealed off. The purpose of the system was to provide a stronger spark to the plugs, always a difficult task with the very short dwell time of a...
View full post »

Thread 'Question about bonding ground and neutral'

I am not an electrical engineering student, but a lowly apprentice electrician. I learn both on the job and also take classes for my apprenticeship. I recently wired my first transformer and I understand that the neutral and ground are bonded together in the transformer or in the service. What I don't understand is, if the neutral is a current carrying conductor, which is then bonded to the ground conductor, why does current only flow back to its source and not on the ground path...
View full post »

Similar threads

Op-amp: Current and bandwidth question
Replies
8
Views
3K
Types of circuits that have a nonlinear response to R
Replies
29
Views
2K
Clarifying the Confusion: Op Amp Gain in Non-Inverting Amplifier Circuits
Replies
5
Views
2K
Noninverting op amp doesn't work on a highly resistive load
Replies
31
Views
4K
One or two op-amps for a high-gain amp
Replies
7
Views
4K
Increasing the 50 Ohm bandwidth of an impedance-matched system
Replies
19
Views
4K
How to Design a Microvolt Pulse Detector Circuit with High Gain and Low Noise
Replies
6
Views
2K
Can Short Pulse Bandwidth Limitations Be Overcome in Radio Transmissions?
Replies
16
Views
3K
Pulsed wideband SNR problem solved by a dynamic carrier?
Replies
2
Views
2K
Op-Amp Slew Rate/Gain-Bandwidth Product
Replies
2
Views
3K

Hot Threads

Recent Insights

Back
Top