Search:

Type: Posts; User: KD494

Page 1 of 4 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    5
    Views
    1,960

    Closed: Re: power consumption in 2-bit multiplexer

    Are you trying to calculate the power consumption of a physical circuit or is this more of a theoretical practice? The inputs are all high impedance so I don't see why the input settings would affect...
  2. Replies
    0
    Views
    1,732

    Closed: True Plug & Play Wireless Adapter

    Hey all,

    I'm working on a product that currently communicates over a wired Ethernet connection with the host PC. Eventually we want everything to be wireless so we designed in a standard IoT WiFi...
  3. Closed: Re: Voltage reference that can sink upwards of 100mA

    Ah I misunderstood you, I though you were offering those amplifiers as a replacement for my driver not for the "mid scale regulator". Thank you for the suggestion, I'll take a look at this as a...
  4. Closed: Re: Voltage reference that can sink upwards of 100mA

    137059

    I guess my issue isn't biasing the output of my driver its where I'm driving current into. The "50 Ohm Resistor" in my circuit is actually the offset cancellation strap of a...
  5. Closed: Voltage reference that can sink upwards of 100mA

    Hey all,

    I have 7 analog channels each of which is going to be driving a 50mA peak signal through a load. The problem is I was planning on using a single ended supply to avoid an extra dual rail...
  6. Replies
    9
    Views
    1,008

    Closed: Re: Designing around ADC Noise

    Yes I am in control of the electrical source, the sensor has a drive coil which is driven from another PCB in the stack. The DAC that generates the drive signal is clocked by the same buffered clock...
  7. Replies
    9
    Views
    1,008

    Closed: Re: Designing around ADC Noise

    That is correct, no DC needed. The though of signal transformers had crossed my mind but this open a whole new can of worms where I'm increasing the noise coupled in from the signal driving the...
  8. Replies
    9
    Views
    1,008

    Closed: Re: Designing around ADC Noise

    I made this confusing by interchanging units but in the same units the noise is actually 100mVrms out of a 707mVrms full scale input, even worse. However if you take the SNR as the ratio of the...
  9. Replies
    9
    Views
    1,008

    Closed: Designing around ADC Noise

    This is a bit of a long question so thanks in advance for any insight! I'm working with an inductive sensor that will under some conditions that I need to measure be giving me as little 200uVpp...
  10. Closed: Re: How close can Op Amp operate to open loop gain

    I'm going to test it when I have the opportunity to but personally I'm more interested in learning about the theory behind what I'm trying to do. So far I've been unable to track down the answers...
  11. Closed: Re: How close can Op Amp operate to open loop gain

    Previously I've been using a DAC and a summing junction to cancel the offset, as long as that is introduced before this gain stage I don't think the increased gain will cause any issues.


    ...
  12. Closed: How close can Op Amp operate to open loop gain

    If I needed a to gain up an really small signal, say 100uV peak, up to 1V peak. I'll need a gain of 10,000 to accomplish this. Could I practically push all of this gain onto one stage, using an...
  13. Closed: Re: Why would touching a DC/DC converter stabilize it

    The input voltage is 15V and this problem occurs both with no load and a 1A load. Is burst mode associated with DCM operation? The chip defaults to CCM operation only and I've verified that by...
  14. Closed: Why would touching a DC/DC converter stabilize it

    Hey all,

    I'm seeing a weird phenomena with a DC/DC converter I'm using, specifically a quad TPS65400. It has four buck converters in one package, three of which are operating perfectly on...
  15. Replies
    2
    Views
    429

    Closed: Re: PI filter for industrial controller board

    Is the power supply a switching DC/DC converter? Are you trying to suppress the switching noise or some source of radiated EMI? Essentially we need to know what frequencies you want to reject before...
  16. Replies
    3
    Views
    618

    [SOLVED]Closed: Re: bridging two sides of the same PCB

    Did you also make the driver PCB? Usually when designing a stack of boards like I believe you're describing you use something like a mezzanine connector. Male on one board female on the other.

    If...
  17. Closed: Re: Why would dynamic current consumption increase with frequency?

    That makes a lot of sense actually, I was wondering why my quiescent current seemed to stay stable until the MHz range where it really started to add up.

    Thanks for all the input!
  18. Closed: Re: Why would dynamic current consumption increase with frequency?

    I was thinking about capacitors since I also have an RC filter right at the input to the ADC but shouldn't the average current through the capacitors be zero since they store and then release energy...
  19. Closed: Why would dynamic current consumption increase with frequency?

    So I have an analog path of a few stages of op amps. I tested it over a wide range of frequencies (100kHz-20MHz) and got more or less the results I expected in terms of gain, bandwidth, noise, and...
  20. Replies
    8
    Views
    1,242

    [SOLVED]Closed: Re: dual circuit series parallel RLC

    @BradtheRad A little off topic but what circuit sim program are you using there?
  21. Replies
    8
    Views
    1,242

    [SOLVED]Closed: Re: dual circuit series parallel RLC

    In your image for the series connection, what voltage are you plotting? Is that the voltage across the resistor? I'm not really sure what you're trying to compare between the two.
  22. Replies
    5
    Views
    1,277

    Closed: Re: how to recognize that the fist is open or not?

    Not sure you'll find an off the shelf item much cheaper than that. However I did find this instructable that helps you make your own with conductive bags.
  23. Replies
    5
    Views
    1,277

    Closed: Re: how to recognize that the fist is open or not?

    I'm sure you could figure out some way to make that work but I don't think it would be easy. If you're okay with having a sensor on your hand sometimes people will put flex sensors like this in a...
  24. Closed: Re: Shorting bar 0.2" (5.08mm) correct name and where to source?

    You might have luck looking under the name jumper or shunt if I'm understanding your needs correctly. Something like this but for more than two pins?
  25. Replies
    5
    Views
    753

    Closed: Re: Band pass filter design

    Are you sure you don't want a band stop filter? I've never really heard the term stop band used for a BPF.

    Are you trying to make an active or passive filter? What order filter do you need, how...
Results 1 to 25 of 81
Page 1 of 4 1 2 3 4