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  1. Arouse1973

    Resonance

    Let me guess, you want to make a Tesla coil? Adam
  2. Arouse1973

    Need help storing keypad input - Hi-Tech C

    As promised, this may help. Adam
  3. Arouse1973

    DCC to Arduino adaptor board

    EMI shouldnt be a problem either way. Capacitor lead length is more important in most cases but again not for EMI issues. You get about 1 nH per mm of lead or track. This will add extra inductance to the component limiting its responce to fast transient currents. Adam
  4. Arouse1973

    Need help storing keypad input - Hi-Tech C

    Why dont you have a look :) I think you will find it interesting. Adam
  5. Arouse1973

    Need help storing keypad input - Hi-Tech C

    Just tried and I cant copy easily from my tablet. I will try from my PC latér. Adam
  6. Arouse1973

    Need help storing keypad input - Hi-Tech C

    Microchip...you know the ones that make the chip lol
  7. Arouse1973

    Need help storing keypad input - Hi-Tech C

    Hi Ash have you had a look on the MC website. They have lots of apps. If not I can send you some code from a kindle book I have but might not be until Monday. I am on my tablet and not sure if I can copy text. Let me see if I can. Adam
  8. Arouse1973

    Need help storing keypad input - Hi-Tech C

    Hi Ash. Where do you want to store the values? What micro are you using? Adam
  9. Arouse1973

    How does the sallen key filter work?

    Where does the pulsing or ripple requirements come from. I am a little confused in respect to your requirements. Thanks Adam
  10. Arouse1973

    DCC to Arduino adaptor board

    Hello All you need to do is make sure all the points or nodes are connected, and any components that have to be placed running with the copper on the board have a cut to isolate the component. So for example R1, you solder this to the PCB and it just so happens that you placed in running with...
  11. Arouse1973

    Hello

    Hey Jim good on yah. I have a way to go yet but I don't plan to retire either. I love that name Jacksonville... I don't know why. Maybe because we have places like Bognor Regis :) what a name lol. Good to see you on here and welcome to EP. Look forward to working with you. Cheers Adam
  12. Arouse1973

    transistors, and capacitors

    Just curious, why is a transistor like a capacitor, am I missing something? Adam
  13. Arouse1973

    Pulse frequency reduction circuit

    If you take the output from the divide buy 10 pin as shown, you can see that the higher frequency (Green Trace) is 500 Hz is and the lower frequency (Blue trace) is 50 Hz. I'll leave you to work out the buffer :) Thanks Adam
  14. Arouse1973

    Pulse frequency reduction circuit

    Hi Matthew, no it's not nonsense, you have made a good start. Adam
  15. Arouse1973

    Pulse frequency reduction circuit

    Hello and welcome to EP. Yes it's possible. You need a decade counter. Something like this might do the trick. You will need a buffer to drive the ECU I am guessing the logic signal is positive going from the Tacho, you will have to make sure the signal level voltage is the same as the power...
  16. Arouse1973

    Gerber files

    Hi Paul Where did the original PCBs in the pictures come from? Thanks Adam
  17. Arouse1973

    Help trying to understand a charging fault on an Xbox One Controller

    Hello. Can you take some clear close up photos of both sides of the PCB in question. We may be able to spot a fault. Thanks Adam
  18. Arouse1973

    Need help with a MOSFET npn type device

    Why such high frequency? This is the tricky part, 500 mA square wave at 10 MHz is not as simple as it sounds :) Thanks Adam
  19. Arouse1973

    Need help with a MOSFET npn type device

    Can I ask what are you driving with this voltage? Do you need to source and sink 500 mA? Thanks Adam
  20. Arouse1973

    Need help with a MOSFET npn type device

    You don't need a negative voltage to operate a p-channel. You connect the source to the positive supply and the drain becomes the output. However P-channels generally have higher RDS ON and switch slower than N-channels, so my first thoughts might not work in your application. Adam
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