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  1. Arouse1973

    Question about DC and Coils and LED.

    No you need to produce a changing magnetic flux for this to happen. Adam
  2. Arouse1973

    Design of isolated buck converter

    The first question is how does a buck conveter work with an input of 16 Volts min when you want an output of 18 Volts?
  3. Arouse1973

    Question about DC and Coils and LED.

    Where you hoping to induce a current in the LED from a battery and coil? Adam
  4. Arouse1973

    2 transistor circuit input output question.

    I think John's issue is how can a voltage source connect two resistors together like that. As we dont normally think about it doing that. I personally gave up on this sort of thing in real life, only going back to it when this sort of thing comes up, I find it interesting but nothing else. I...
  5. Arouse1973

    Rest in Peace, Kris

    This is how the family of Kris feels now he is gone. I don't think it's related to Kris but from FB this is how they are feeling right now. Adam
  6. Arouse1973

    2 transistor circuit input output question.

    This is wonderful stuff! :) Adam
  7. Arouse1973

    I had a thought... (Vreg close to Vin)

    You also have the single ended primary inductor converter (SEPIC). These can be made quite simple also. Adam
  8. Arouse1973

    PIC 16F676 problem

    I have had issues before with porta and have had to clear the port in the main code. Give it a try.
  9. Arouse1973

    PIC 16F676 problem

    So you say porta,2 is ok. You have had your test code working and turning on the LED yes?
  10. Arouse1973

    PIC 16F676 problem

    You could try clearing porta before you start your test routine. I have known porta to be a bit funny like that.
  11. Arouse1973

    Problem: Schmitt Trigger not giving ON/OFF output

    No you don't understand. Microchip is the manufacturer, they sell more than just microcontrollers.
  12. Arouse1973

    Problem: Schmitt Trigger not giving ON/OFF output

    Have a look at Microchip, they do some opamps and they are much cheaper. Although I am a LT fan boy, their parts are expensive.
  13. Arouse1973

    Problem: Schmitt Trigger not giving ON/OFF output

    Look for the parameter "output voltage swing" what does it say?
  14. Arouse1973

    Problem: Schmitt Trigger not giving ON/OFF output

    Maybe @Colin Mitchell can answer that, it's his design. He is a member here. Adam
  15. Arouse1973

    PIC 16F676 problem

    I can't see that you have cleared the RAPU bit? Adam
  16. Arouse1973

    PIC 16F676 problem

    Post the circuit diagram please. Adam
  17. Arouse1973

    PIC16f877A Blinking an LED

    Yes, he should of used movwf trisa. Well spotted M Adam
  18. Arouse1973

    PIC16f877A Blinking an LED

    Set up PORTA as M said and just use banksel command for switching banks if you need to. Use molw b'00010, dont use HEX it gets confusing unless you know it very well. Then set up a delay and use the call funtion. so: main bsf PORTA,1 Call delay bcf PORTA,1 call delay Return
  19. Arouse1973

    Bench PSU

    I started the PCB and need to finish the PCB layout first. But feel free to do your own thing, I am quite busy at the moment. But hope to have some time over the next few weeks to work on it. Thanks Adam
  20. Arouse1973

    Volts to ohms for fuel sender

    I would have thought a programmable current sink or source would work wouldn't it. This effectively alters it's resistance by drawing or supplying more or less current dependant on the voltage setting on the input. Not that familiar with fuel gauges so might not work. Adam
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