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Type: Posts; User: barry

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  1. Closed: Re: question regarding timing analysis or slack time

    Is there actually a signal named “Clk” in your design? Is it driving any logic?
  2. Closed: Re: indivisual out different from differential output in fully differential amplifier

    Is this a simulation or oscilloscope capture?

    if it's the signals from real hardware, as long as the spikes don't exceed any other circuit restrictions it should be ok. (This is kind of the point...
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    Closed: Re: DC Booster for Solar Pump

    Of course this is “possible”; ANYTHING is possible. But this is not trivial. Basically, you need to chop your 200 VDC into pulsed DC, and step it up using a diode and inductor, while not...
  4. Closed: Re: How the washing machine Automatic Load Sense works?

    If you are saying the motor draws the same current regardless of the "cloth load" then, obviously, you can't sense the cloth load by measuring motor current, right?

    I suspect the mass of the...
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    Closed: Re: Positive to Negative Logic

    The obvious/trivial answer is change the opamp to an inverting configuration.

    Or, if your input is floating, just swap the return and signal.
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    Closed: Re: SHUNT resistances value

    Ah, right, I didn't notice that these were 4 paralleled MOSFETs (figured it was an H-Bridge). I told you I didn't analyze the circuit.
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    Closed: Re: SHUNT resistances value

    I'm not going to analyze your entire circuit, but consider this: the resistors will have an instantaneous power of 360W. 30mS only provides half the information; what's the duty cycle? THAT will tell...
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    Closed: Re: LT3750 Capacitor Charging Problem

    Although you say otherwise, it sure SOUNDS like you've got a damaged component. According to the data sheet:

    DONE (Pin 2): Open Collector Indication Pin. When target output voltage is reached,...
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    Closed: Re: Discrete transistor voltage regulator

    Sort of. Q2 & Q3 form a Darlington pass transistor. C1 has nothing to do with creating a reference voltage; it's only for filtering. As the voltage across R5(proportional to output voltage) rises, Q1...
  10. [SOLVED]Closed: Re: Technique behind the Charging and Inverting Function of an Inverter

    Without SOME Kind of drawing, schematic, circuit description, it’s impossible to tell what you are talking about. 12 volts? 7.5 volts? 14.5 volts?
  11. Closed: Re: Automatic Water Level Controller - Dynamic Dry-Run and OverLoad Current Calc Rela

    Let me google that for you: https://www.allaboutcircuits.com/textbook/alternating-current/chpt-11/calculating-power-factor/
  12. Closed: Re: Automatic Water Level Controller - Dynamic Dry-Run and OverLoad Current Calc Rela

    I think you also need to consider power factor.
  13. Closed: Re: Inflatable Hard Drive - transferal of data between three devices via USB

    In your original post you said: "I'm proposing to build an inflatable hard drive". Then you said: " Ideally, you would use the device in the same way you do an external hard drive".

    You are, in...
  14. Closed: Re: Inflatable Hard Drive - transferal of data between three devices via USB

    Maybe I'm missing something, but you seem to have an enormous misunderstanding of, well, everything. The way you describe it, your system inflates a balloon proportional to the AMOUNT with no regard...
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    Closed: Re: ATA6561 getting shorted frequently

    What do you mean your “transreceiver is getting short-circuited most of the time”? That’s not very descriptive. Is there zero resistance across the power supply pins? Does the device get very hot and...
  16. Closed: Re: Charging from USB port, how much current can I draw?

    Here, I googled it for you: https://superuser.com/questions/297959/how-do-you-check-how-much-power-a-usb-port-can-deliver
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    Closed: Re: What type of oscillator is this?

    This a multivibrator. See thishttps://www.electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/multivibrator.php
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    Closed: Re: Ferrite bead usage in ADC's

    Nope. The OP is not wrong, he is showing the exact schematic for the Adafruit board. It has EVERTYHING to do with the on-board ground.
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    Closed: Re: Ferrite bead usage in ADC's

    I don’t know what schematic YOU’RE looking at, but there’s only one ground on this one, that’s why the OP’s original question. There’s no separate grounds. There’s no caps “connected to the wrong...
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    Closed: Re: Ferrite bead usage in ADC's

    I've never seen anything like this before with the bead in the ground path. I can't think of any reason for it. I would think it would hurt rather than help. But you can always replace it with a...
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    Closed: Re: Logic Buffer IC delay (74HC4049)

    right there on page 4 is a pretty picture explaining exactly what propagation delay and transition time are. Propagation delay is the time from the midpoint of the input transition to the midpoint of...
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    Closed: Re: Coaxial cable capacitance

    If you've got a 75 ohm termination, you're only going to be able to pull to VDD/2.
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    Closed: Re: Tracking Phase comparator Logic

    This makes zero sense. By your definition, if the phase difference is 5us, your output is 5. If it changes to 10uS you "add with its past input", so now your output is 15?

    People keep asking you...
  24. Closed: Re: Stability issue of the closed loop feedback in fully differential ampliifer

    No one suggested using a small resistor, but 100M is almost no resistor at all. I suggested trying a smaller resistor (1M, 100K). Did you do that?
  25. Closed: Re: How hold violation caused by below mentioned Scenceio

    How about a diagram? Your description is very confusing.
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