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4 votes

Poles of system seem counter intuitive

It has to be excited at the resonant frequency for the amplitude to blow up. I'm using the following transfer function with a DC gain of 1 and poles as you have specified. $$\frac{32}{(s-8 i) (s+8 i) \...
Suba Thomas's user avatar
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10 votes

Poles of system seem counter intuitive

You have a pair of poles on the Y-axis. That is the abstract representation of an oscillator without damping. If your input is of finite duration, once the input goes to zero the oscillation will be ...
John Doty's user avatar
  • 3,894
0 votes

How to compensate this circuit?

Look at the resistances and capacitances at each node and the op amp model. If what you've found can't explain your Bode plot, keep looking. I would also not make assumptions about the Rout of either ...
JkingNH's user avatar
  • 56
2 votes

Stability issue: Compensation changes using Bode plot in LTspice

I have designed several circuits with the LT8390, including a variable voltage output converter for peltiers that could source and sink current. An ac analysis can't be run in LT spice for a DC/DC, ...
Voltage Spike's user avatar
  • 81.3k
1 vote

Transimpedance amplifier: weird simulation results

I haven't looked at the datasheet, but I wouldn't be surprised if the loop gain changes due a different common-mode input voltage. They will define how hard you drive the differential input stage (the ...
Designalog's user avatar
  • 3,815
1 vote

Fundamentals of electrical circuits. Practice problem 16.13 Network Stability

Let's redraw the schematic: simulate this circuit – Schematic created using CircuitLab Ignore \$C\$ on the left side. Given enough time it's an open circuit. Here KCL says \$\frac{v_i}{R}=\beta\...
periblepsis's user avatar
  • 7,710
0 votes

Fundamentals of electrical circuits. Practice problem 16.13 Network Stability

This is only a partial answer, but I post it, so it maybe helps. There is a current source ("Voltage controlled current source") and a voltage output. There is a feedback, as the source is ...
Carsten's user avatar
  • 96

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