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Hi frankrose,
thank you very much. In fact, I managed to obtain the same results today. Now, replacing some of the resistors with the capacitors and the RC series connection towards GND, I can then obtain the transfer function. It requires a bit of algebra, but should be doable. Let's see how...
Excellent - now I get your point. Thank you.
Then let me ask you in a slightly different way, having only resistors in the circuit. How would you obtain the transfer function in the below shown figure, when R3 is now connected to GND? Any guess?
Thank you,
I am curious to hear about your opinion on the differences between an integrator and an amplifier, as you pointed out in your first reply:
If you don't mind, would you please elaborate on this topic?
Thank you,
Excellent catch, frankrose. I did a mistake in Figure 2 of my drawing. Please have a look at the revised drawing shown below. I also added resistor R2 into the figures for the sake of completeness, although AFAIK resistor R2 does not affect the transfer function. Let me ask you, frankrose, is...
Dear all
I came across an error amplifier constellation as shown in Figure 1 in the attached graphic. Note how R1/C1 in the local OP-amp feedback is connected to GND. I am more familiar with the more commonly used structure as in Figure 2 in the attached graphic, where R1/C1 is in parallel to...
Dear BradtheRad,
thank you very much for your reply. I think I am worried about unimportant stuff at the moment. I'll start my simulations and play a bit with the values to see their impact. In case I have further questions, I'll come back to that.
Kindly,
al3ko
PS: It is a nice app that you...
Dear BradtheRad,
I already tried the search but apparently not good enough. I have found many questions about the design of inverters but not the general aspects of control.
I have nothing special in mind. I'm just thinking of a regular H-Bridge as you can see here...
Your control might not work (properly). If you are unlucky, you won't get your output voltage stable. What is your background? It appears that you have no real clue about control theory, is that true?
If you want to use a feedback control, you will have to implement a controller like P-, PI- oder PID. That is the compensator and stabilizes your feedback control. So yes, you will have to deal with that stuff in order make your closed loop control work. Though you will have to know about your...
Please consult the datasheet of your PWM controller. On the very first page, there is a block diagram. You can clearly see the zener diode (1V) at the second comparator. Also, in the application note, there is a section about dimensioning the sense resistor. As a matter of fact, there is an...
Dear all,
I have first experiences in the design of SMPS and the control of such DC/DC converters. Both current mode control and voltage mode control are familiar to me.
Now, I really want to expand my experience and knowledge and get familiar with DC/AC inverters. Of course, I want to start...
Dear AMSA84,
I am not sure where exactly you are stuck, but I will give an answer to your question about the difference in CMC (Current Mode Control) and VMC (Voltage Mode Control) which haven't been written so far in this thread.
Please have a look at the link:
**broken link removed**
It is...
Dear mtwieg,
I think I finished the compensator design. I decided against one of the compensation networks you sent me with your app notes. Firstly, because they are for voltage mode control so that the calculation and designs are based on the output LC filter and therefore a double pole in the...
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