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  1. Replies
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    Closed: Re: Multiplexer output width depends on SELECT

    So all the operations are parallel and may even take one clock cycle to append the extra data.

    If any part of my post is not clear, feel free to ask for an explanation.
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    Closed: Re: Multiplexer output width depends on SELECT

    Very well then, consider this.
    Feed each data line into one input of a two input mux. The second input of each mux on a data line that does not bear a data bit at the time would be fed an 'append...
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    Closed: Re: Multiplexer output width depends on SELECT

    Okay, so it's just parallel data comong in and not necessarily a bus.

    Doing this operation using a mux and then a demux to me is time consuming. I believe the operation can be accomplished with...
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    Closed: Re: Multiplexer output width depends on SELECT

    So the data coming in on the bus has bits that are either '1', '0' or 'Z'?

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    I'm much concerned about 'Z'.
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    Closed: Re: Multiplexer output width depends on SELECT

    A mux has a single bit output. You can synchronize the output with clock though.

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    If you just have a mux and then a demux, and you have a common select signal to the select...
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    Closed: Re: Gate Level Simulation

    Hi,

    Gate level simulation of what netlist? Where? With what?

    You need to give details.
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    Closed: Re: IRS25752 IC has no pin 1 marker

    Hi,

    Let's see a picture of the IC.
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    Replace the gate resistor with a higher value one. Try 75 ohm
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    Thermal paste conducts heat. They do not conduct electricity. In fact, it acts like a dielectric with the IGBT and the heatsink acting like the two parallel plates of a capacitor, the thermal paste...
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    The earthing cable should be a solid copper conductor of a certain cross-sectional area. You know it already. You're just ignoring it.

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    155539

    Even when you have a...
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    That rheostat must be a very large one. It must be having significant inductance and switching its current abruptly like that might be causing the spike across the SAAF IGBT. Do you mind comnecting a...
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    Let me elaborate more on this very point. Each of your HS drivers need a bootstrap circuit. Look at your schematic again. You need to rearrange the whole schematic.
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    [SOLVED]Closed: Re: IGBT Overshoot and Weird Slope

    Hi,

    I will only point out things that I think may be direct contributors, so the list is not exhaustive but just a starting point.

    =Your IGBTs are not properly connected.
    =See the...
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    Closed: Re: Multiplexer output width depends on SELECT

    This is basically connecting the output channel of a mux to the input channel of a demux. It is not going to be of any use because it is the same number of imput channels to the mux that you would...
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    Closed: Re: Multiplexer output width depends on SELECT

    Hi,

    It could be done. The major challenge is having to detect which channels of the input data bus that bear information. Selecting those channels and connecting them to the output is simple -...
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    Closed: Re: PT100 interfacing with controller

    Hi,

    I have a couple of questions to ask you based on your schematic so I'll start from the left.

    1) Why did you leave the S+ terminal unconnected? Are you trying to implement a 3-wire...
  17. Closed: Re: SMPS feedback compensation..origin pole is "pole at origin"?

    For the type 2 compensator, it is usually sufficient to implement an inverted zero at fz1 without bothering about fp0. An inverted zero at fz1 determines the slope between fp0 and fp1.
  18. [SOLVED]Closed: Re: Inductor quality value for switching regulators

    There is AC resistance actually. That's one of the reason you would prefer 'multifilar' winding or litz wire to solid copper.

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    As a matter of fact, you need to calculate for...
  19. Closed: Re: Can't stop LTC3780EG Buck-Boost regulator from oscillating

    Congratulations on your success! I should have mentioned the bootstrap circuitry too.
  20. Closed: Re: Half bridge SMPS xformer turns calculation

    How did you select the core size? You need to follow through a series of steps to help you do a good selection.

    You would have a lot of hits from a single internet search.
  21. Closed: Re: Half bridge SMPS xformer turns calculation

    Hi,

    For Bmax of 1500mT, what core material are you using?
    For duty cycle of 0.98, how did you arrive at that figure?
    Also why are you calculating with the nominal value?

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    ...
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    Closed: Re: Voltage regulator... proportional?

    The truth here is just that we are just guessing to help you out. Like they say, a picture is worth a thousand words, a simple drawing can convey the entire message.

    I am thinking that the voltage...
  23. Closed: Re: Can't stop LTC3780EG Buck-Boost regulator from oscillating

    Hi,

    I know three things that can make your converter to oscillate that you might want to look at:

    1) your feedback loop
    2) your current sense resistor is too high and so your converter can't...
  24. [SOLVED]Closed: Re: Inductor quality value for switching regulators

    Hi,

    What you should do is go to the power loss density versus deltaB chart in the datasheet for the core that you hope to use and use the Empirical Steinmetz equation to determine the core loss...
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    Closed: Re: Voltage regulator... proportional?

    Hi,

    Just show a little sketch of your connection and we can help you improve it.

    I am having a feeling that the video transmitter being in parallel with your R2 in the voltage divider has an...
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