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  1. Arouse1973

    Need help on Current Mode Control

    From my view point I think Fig 1 is just showing the classic PWM achieved by a basic comparator and giving you an example waveform. It shows a D.C control line changing the pulse with over many cycles. It would have been nice for them to show a waveform of the different inputs and outputs of Fig...
  2. Arouse1973

    Need help on Current Mode Control

    What Vramp are you looking at in the app note? Why does your Vramp not start at zero volts? Thanks Adam
  3. Arouse1973

    Need help on Current Mode Control

    If it's for slope compensation, which I presume it is then it will be a sawtooth. Thanks Adam
  4. Arouse1973

    help with how to design a common source amplifier, self biased with a source of 24v with a 2N 5459

    Please show us your circuit. Both the schematic and the practical PCB you have made. Thanks Adam
  5. Arouse1973

    pcb trace, common-mode noise, and murphy

    Yes please elaborate if you can and yes a schematic would be good and a few pictures, nice clear close ups of the PCB front and back. Thanks Adam
  6. Arouse1973

    Mosfet heater control

    Hello. What about using a large relay to control the heater. You could then switch the relay using the Arduino. This would also give you isolation from the mains and you could run this from a battery if you wanted to. Adam
  7. Arouse1973

    Need help with connectors!!

    Hi Aiden, are you sure its an ntype connector? Got any pics we can see, it helps a lot. Cheers Adam
  8. Arouse1973

    Getting value of ADRESH out of a pic μcu?

    Hi Guys The capacitor that's part of the reset RC circuitry is for slow rising Vdd and slows down the rise of MCLR to create a POR. The Vdd must be stable before MCLR. If you look on the data sheet you should see some timings which show this. Thanks Adam
  9. Arouse1973

    PCB production panel details

    When we get PCBs manufactured and assembled I let the company that's going to assemble the PCBs choose how to set up the panel. They know what assembly equipment they have and the size of PCBs they prefer. When V-scoring, the PCBs are placed next to each other but allow your PCB to be 0.6 mm...
  10. Arouse1973

    Getting value of ADRESH out of a pic μcu?

    I didn't spot that, it appears that when pasted into word it automatically puts a space in. I'll have to watch that in future. Adam
  11. Arouse1973

    Converting int to string - C Programming

    The OP will get the point! Adam
  12. Arouse1973

    Getting value of ADRESH out of a pic μcu?

    No probs! Adam
  13. Arouse1973

    Getting value of ADRESH out of a pic μcu?

    Don't know if this is of any use John. Found an example of a volt meter, you might be able to pick the bits out you want. Adam 1 // Voltage.c, DW Smith, 1st December 2011 2 #include < p18f1220. h > 3 #pragma config WDT = OFF, OSC = INTIO2, PWRT = ON, LVP = OFF, MCLRE = OFF 4 #include <...
  14. Arouse1973

    Converting int to string - C Programming

    Does this help? Thanks Adam
  15. Arouse1973

    Converting int to string - C Programming

    Thats when you are using the array. 0 is the first elemment....and so on. But you still have 3 elements. Adam
  16. Arouse1973

    Hello from asia

    Welcome to EP. Adam
  17. Arouse1973

    Inverter 12V to 220V

    Yes it can..... why are you asking? Adam
  18. Arouse1973

    Complete noob having a hard time understanding a couple things

    Welcome to EP. Yes you can use the Arduino to drive stepper motors, however the use of a dedicated PCB with drivers is sometimes more desirable because it can be easier to implement. Here is a link to an Arduino version. https://www.arduino.cc/en/Tutorial/StepperSpeedControl Thanks Adam
  19. Arouse1973

    Instability on a diferential output amplifier

    Yes you are correct, and you would normally use a mirror circuit and not a zener. Unless it was 5.1V zener which has zero temp-co. Adam
  20. Arouse1973

    Instability on a diferential output amplifier

    I have never seen a diff amp biased with a zener current sink before, why the choice? Adam
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