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  1. Arouse1973

    Calculating resolution.

    Phew, thought I was going mad :) Cheers Adam
  2. Arouse1973

    Calculating resolution.

    Not the website I saw but he mentions -1. But I think where I might be wrong is the maximum value FSD is Vref -1bit of resolution? Is that correct? Adam
  3. Arouse1973

    Calculating resolution.

    Um I used to do it the other way and then I read on some website a time a go you should subtract 1. I am not saying your wrong...let me see if I can find the website. Cheers Adam
  4. Arouse1973

    Calculating resolution.

    No probs.
  5. Arouse1973

    Calculating resolution.

    Hello. How I do it is this 5/((2^8)-1) and that gets me pretty much the same answer as you. :) Thanks Adam
  6. Arouse1973

    Two power supplies, switched by loss of one

    Why does the PSU fail? Fix that and that will save you time and money wont it.? Adam
  7. Arouse1973

    Capacitor Help

    Just hang around here you will learn lots :) Adam
  8. Arouse1973

    Mind-boggling schematic of power supply.

    You are correct that the output voltage will rise for a rise in common potential. The feedback resistors are chosen to give say 5 volts out with a common of 0 volts. If this rises by 1 volt then the output will rise 1 volt. This has nothing to do with the inductor, it's the feedback network. If...
  9. Arouse1973

    Help! Push-on Terminal

    See the little tab in the middle of the crimp. Prise it away carefully and pull the terminal off. There is a little pip on the tab that locks into a hole on the PCB connector. They can be very tight to get off sometimes Thanks Adam
  10. Arouse1973

    Component identification help

    LOL I was born in 73, that's probably why :) Cheers Adam
  11. Arouse1973

    Component identification help

    Yes I thought it seemed a bit high myself. I have never seen a capacitor with the value marked in Nano Farads and that bulge on the back side is indicative of MOVs, NTCs and PTC. That's the reason I discounted it from being a capacitor. Adam
  12. Arouse1973

    Component identification help

    Out of interest does it read anything on a resistance measurement? Thanks Adam
  13. Arouse1973

    Component identification help

    Can you point us to where in the circuit this came from? Thanks Adam
  14. Arouse1973

    Component identification help

    Hi Steven, welcome to E.P. It might actually be a surge suppressor and not a capacitor. Is it short circuit? Edit: Or an NTC Adam
  15. Arouse1973

    pots in parallel

    What values are you reading? Resistance or voltage? If voltage then do you have a low impedance power source connected when reading the voltages from the wiper? Thanks Adam
  16. Arouse1973

    Mind-boggling schematic of power supply.

    Just above the neutral input it say 3.3 V? Maybe that's why...dont know
  17. Arouse1973

    Mind-boggling schematic of power supply.

    Wow that's a lot of capacitance on the output of the regulator. Make sure the regulator is not current limiting when charging up those output caps :) Adam
  18. Arouse1973

    How to remove solder from plated-through holes?

    Agree with Steve. Adam
  19. Arouse1973

    Capacitor question

    Further investigation reveals that Mylar is a trade name and is in fact PET a form of polyester, but there are more than one type of polyester :) Adam
  20. Arouse1973

    Capacitor question

    So are Mylar film and Mylar polyester :) Adam
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