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Recent content by yeechyan

  1. Y

    [SOLVED] How to generate a PWM signal out from ATmega644 microcontroller?

    codes for PWM You can play around with the compare/capture register to generate PWM. Let's say if you set a value for the compare/capture register and let the timer counter runs, when the timer counter value matches with the compare/capture register, it'll trigger an interrupt. That's basically...
  2. Y

    low pass filter with corner frequency tunable/trimmable

    You can try using a few resistors in series with pass transistors to select the desired value.
  3. Y

    SMPS forward converter using used transformer

    forward converter transformer design You should find out the primary inductance of the transformer. The formula relating inductance and power applies. P = 0.5 * L * I^2 * f P = power L = inductance I = current f = switching frequency
  4. Y

    Can not pass SS corner in designing this comparator

    Please elaborate more on your problem. Could you show us the waveforms for those transistors? When you check the waveforms of the transistors, you might be able to see which part of them starts to get wrong.
  5. Y

    Boost+H-bridge problem

    Do you have IEEE account? If yes you can try downloading this paper: ieeexplore.ieee.org/iel4/7/8964/00395244.pdf ieeexplore.ieee.org/iel5/10622/33557/01594121.pdf You can also read this paper: http://www.atmel.com/dyn/resources/prod_documents/doc4865.pdf Added after 2 minutes: Usually...
  6. Y

    Laugh out loud newbie question: how much does voltage matter

    Re: Laugh out loud newbie question: how much does voltage ma BJT is current driven device. It needs a current supplied to it's base terminal in order to turn it on. MOS is voltage driven device. It needs a voltage across the gate to source terminal in order to turn it on.
  7. Y

    Looking for information about Class G Amplifier

    Class G Amplifier **broken link removed**
  8. Y

    Boost+H-bridge problem

    h-bridge booster You need to have feedback here. Without the feedback the circuit won't be able to track the output and compensate for it.
  9. Y

    Error Amplifier Design

    http://www.ecircuitcenter.com/Circuits/smps_buck_vm1/smps_buck_vm1.htm
  10. Y

    Looking for information about step up chopper

    step up chopper notes Step up chopper basically is a booster. **broken link removed**
  11. Y

    help me more document about Fuzzy Control

    www.target.com/Fuzzy-Thinking-New-Science-Logic/dp/0944993974 Added after 1 minutes: You can find articles by Bart Kosko related to Fuzzy Logic: https://sipi.usc.edu/~kosko/publications.html
  12. Y

    12V to 240V interverter circuit

    12v to 240v **broken link removed** Added after 6 minutes: thecarwocq.isuisse.com/dc-ac-inverter-circuit.html
  13. Y

    Traffic light controller circuit with only 555 timer

    with only 555 http://www.discovercircuits.com/L/lampcont11.htm
  14. Y

    Help me build a voltage monitor

    Voltage Monitor Using voltage reference, a few comparators and flip-flop will do.
  15. Y

    What is a fully differential CMOS logic?

    cmos logic Take a look in this paper: **broken link removed**
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