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Recent content by cane21

  1. C

    Solder bridge or 0 Ohm resistor

    Yes, that is exactly what I'm asking. What would be the maximum that an 0805 size solder bridge can withstand? Are there any rules of thumb to estimate? I have made a quick schematic to illustrate my question with R252 being the solder bridge or jumper resistor.
  2. C

    Solder bridge or 0 Ohm resistor

    By positive side do you mean the input side of the regulator? If I disconnect the input side then I won’t be able to measure my output voltage to ensure it’s correct Let me try again : I have a 12V to 1V/1.2V/0.85V voltage regulator to power an FPGA. I don’t want the FPGA powered up as soon as...
  3. C

    Solder bridge or 0 Ohm resistor

    Sorry, to be more specific I meant I want to isolate it until I’m sure the voltage is correct before connecting it to the plane.
  4. C

    Solder bridge or 0 Ohm resistor

    Hi all, If I’d like to isolate the output of my voltage regulator from the power plane, would it be better to use a solder bridge/blob or a 0 ohm resistor? If the regulator voltage output is max 10A @ 1.2V what is the maximum current that an 0805 sized solder blob can carry and how would I...
  5. C

    Using MOSFET as load for voltage regulator?

    Hi So I've built a dc electronic load as in the pic attached (courtesy of https://www.codrey.com/electronic-circuits/simple-electronic-dc-load/). I'm having a problem adjusting the current draw though. As I understand it, turning the pot should adjust your current draw? That is having no...
  6. C

    Using MOSFET as load for voltage regulator?

    Hi I have a DC-DC voltage regulator (Input 12V, Output 3.3V/1A). I would like to use a mosfet as a dummy load to vary the output of the regulator, steadily increase the current. Would this be possible with the mosfet alone or would I have to use the mosfet as a switch for a seperate dummy...
  7. C

    Convert Sine to Square and shift phase

    Sorry for being vague, that was the original signal but I have already filtered it through a LPF. I am using LTSpice to simulate.
  8. C

    Convert Sine to Square and shift phase

    Thanks, It's just a filtered sin wave : 4 sin(500t) + sin (15000t) to be shifted by 60 degrees. So shifting first then using a schmitt trigger should be okay?
  9. C

    Convert Sine to Square and shift phase

    Hi If I need to convert a sine wave to a phase shifted square wave, would the simplest way be to use a phase shift RC oscillator after a Schmit trigger?
  10. C

    Low pass filter design

    Hi I just need some clarification regarding a LPF design. I have a signal f(t)= 4 sin(500t)+ sin(15000t) and want to filter out the high frequencies by at least 20dB. I’m confused about the 20dB, does that just refer to the roll-off rate? Would a RC or RLC LPF be better in this case...
  11. C

    Beaglebone Black C Altium Files

    I guess no one has these :cry: I will update the Rev A5B files to Rev C and make them available for Altium users.
  12. C

    MIcrochip LAN8710A with SFP+?

    Thank you. So something like the KSZ8041FTL : https://ww1.microchip.com/downloads/en/DeviceDoc/00002436B.pdf
  13. C

    MIcrochip LAN8710A with SFP+?

    Hi all, Does anyone know if it's possible to use the Microchip LAN8710A Ethernet Phy with SFP instead of RJ45? https://ww1.microchip.com/downloads/en/DeviceDoc/00002164B.pdf Regards
  14. C

    Beaglebone Black C Altium Files

    Hi! The Allegro files for the Beaglebone Black Rev C are available but unfortunately the Altium files are only for version A5B. To convert the Allegro files to Altium, you need a licensed version of Allegro, which I do not have. Has anyone already converted the .brd files to Altium? Much...
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