frequency response

  1. grandslam67

    How do I design a Multistage Amplifier with given specifications, specifically the upper 3dB cutoff frequency?

    I have been tasked to design a multistage amplifier with the following specifications: Gain(V/V) = 30, Rin = 20 kohms, Rout < 25 ohms, Power supply = Dual +12V -12V, Max Symmetrical Swing > 9Vpp (peak-to-peak), lower 3dB down point < 200 Hz, Upper 3dB down point > 5 kHz, Rload = 200 ohms. I...
  2. P

    How to modify/ design error amplifier compensation circuit (with TL431) for variable flyback converter and make it stable.

    I bought a power supply adopter (old, used, made for some device) of 24v 4.5A (from 230vac mains). It is a fixed output psu. My intention is to make it a variable psu of 30v to <=5v (as low as possible, and continuously variable). Schematic (simplified) of its error-amp circuitry is attached...
  3. D

    Controller for infinite phase margin

    Hello, I have a transfer function of an active suspension system of a quarter of a vehicle, they ask me to calculate a controller from the Bode diagram that complies with overshoot of 33% and settling time 1. I have the problem that the margin of phase gives infinity, if someone could guide me I...
  4. Venia

    Pspice AC analysis of an equivalent mono phase circuit

    Hi! I've solved and simulated on PSpice a balanced three phase circuit and now I'm considering the equivalent mono phase circuit. I've already done the transient analysis and I'd like to know if I can run other kind of analysis such as an AC SWEEP/NOISE (to simulate the behaviour of the system...
  5. Minchuu

    How to find the magnitude component at a given frequency with the input-output relationship and input

    Hello! We were tasked to find the 100kHz magnitude component of a non linear device with a function $$V_{out}=5V_{in}^{2}$$ where $$V_{in}=cos(1000\cdot 2\pi\cdot t)+sin(1000002\pi\cdot t)$$. So far I have, And now I have no idea where will I find the 100kHz component. Do I turn the...
  6. F

    Choice of error amplifier for LDO

    Hi There! I am, for several reasons about building a adjustable LDO. Some of the specifications are: - min input voltage 4.4V - max output voltage 3.6V - 500mV dropout, due to sense resistor - wide current output range - at least 20kHz bandwidth @ 10uA load, ideally 100kHz Pass element shall...
  7. L

    Why does mutual Coupling changes self resonant frequency and alters frequency response?

    Hello all. I am conducting a simulation based report on resonant inductive coupling. I intend to calculate power transferred as a function of input frequency. For this I used the formulae for self resonant frequency and calculated a SRF of 3.283MHz using 10mH, 235pF and 0.25Ohms as my values...
  8. Nurahmed Omar

    Frequency Response of LC Filter has a Peak with an Impedance Load

    Hi, I am designing an LC filter with a cut-off frequency of 20 kHz for the Class-D amplifier. The filter schematic is shown in Fig.1 top right. I understand how to choose the LC values for the critically damped case for the pure resistive load as shown in Fig. 2. The problem is I want to drive...
Top