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  1. johnyradio

    Minimizing Ripple in Rectifier with Waveform, Polarity, Bridge-Type, Inductor, and Transformer-Type?

    In a rectifier and RC filter, which combination of waveform, bi-polarity, inductor/cap, and transformer-type will give the least ripple in the output? My input is 100 kHz AC supplying a transformer. I have control over the supply voltage, wave shape, and polarity, over the transformer type, and...
  2. M

    I made an oscilator, but i need a amplifier to change the amplitude

    I made this oscillator and the output voltage is 1V, and I need another amplifier to go to 5V and some mv ideally to 10mV, but that is harder. I made this but it doesn't work very well and I don't understand why. I can't work with OpAmps, with only transistors. I put a common emitter with a...
  3. C

    Calculating the fourier transform of this waveform

    So i am trying to calculate the fourier transform of this waveform. I have made an attempt at it but i dont think its right: S(t) = 1000t The integral of: 1000t*e^-jwt dt , with the limits: 0 to 1x10^-3
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