Quantcast
Channel: Active questions tagged feedback+control-system+operational-amplifier - Electrical Engineering Stack Exchange
Browsing latest articles
Browse All 7 View Live

Image may be NSFW.
Clik here to view.

What is the correct transfer function of a feedback loop if the summing...

Suppose I have a circuit below: simulate this circuit – Schematic created using CircuitLab I know the the transfer function of a negative feedback loop is: $$H(s)=\frac{H_1(s)}{1+H_1(s)H_2(s)}$$ But...

View Article



Image may be NSFW.
Clik here to view.

Is a Type 2a PID(ish) controller just an example of an augmenting integrator?

In a previous question I finally cracked the code on deriving for myself the transfer function for a Type 2(a) compensator like this one, built around an op amp. As it turns out, for AC analysis...

View Article

Image may be NSFW.
Clik here to view.

What is this RC local feedback configuration?

I'm studying power converter control loops using Christophe Basso's book Designing Control Loops for Linear and Switching Power Supplies. A very common pattern in the compensator circuits is a...

View Article

Image may be NSFW.
Clik here to view.

Deriving PI controller transfer function when input is reversed

I'm developing the compensator for the linear DC Bench Power Supply I'm designing. As I've come to deriving the transfer function for the op amp-based compensator, I realize I've been depending on a...

View Article

Image may be NSFW.
Clik here to view.

Finding transfer function of a compensator circuit similar to a type 2...

I know how to find transfer functions of op-amp circuits using equations derived from using Kirchhoff's current law (nodal analysis), and normally I don't have any problems solving them. However, I...

View Article


Image may be NSFW.
Clik here to view.

Current controller: how to dampen resonance to increase bandwidth?

I need to design a +/-1.5A, 3kHz small-signal-bandwidth (absolute min, for 3° max phase and 1% max error on amplitude) current controller for a 20 Ohm 0.1H load with a +/-100V supply rail (the current...

View Article

Image may be NSFW.
Clik here to view.

What is noise gain, really? And how is it determined in the general case?

UPDATE: This question triggered what might fairly be called a research obsession for me. I've gotten pretty close to the bottom of it I think, I've posted my findings as an answer below. There was a...

View Article
Browsing latest articles
Browse All 7 View Live




Latest Images