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  1. Arouse1973

    pulse generators

    I think your going to need an RF transmitter and receiver. I don't think the 555 timer is going to work very well. Is this under soil or rock? I think your going to need a quite powerful transmitter to get through that much ground substance. And an receiver that has signal strength indication...
  2. Arouse1973

    How to prevent a capacitor from dischargeing back into my circuit?

    Ok this might work. Charge the cap from any port pin, needs to be on for at least 5 seconds before turning off take a measurement of the voltage and store this value. When the supply is removed the PIC it's self is used to discharge the capacitor through a known load (1M). When switched back on...
  3. Arouse1973

    What kind of relay is this?

    Is this a wind up? You asked what do they do to the relay?
  4. Arouse1973

    problem in 12v - 230v inverter

    Check your connections. The circuit looks ok. Adam
  5. Arouse1973

    PID Control of an Induction Cooker.

    :)
  6. Arouse1973

    What kind of relay is this?

    I dont know I dont think relays have generic footprints like other component. Adam
  7. Arouse1973

    What kind of relay is this?

    They dont do anything to the relay, they absorb the flyback energy from the coil when the relay is switched off. Adam
  8. Arouse1973

    What kind of relay is this?

    Looks like a double pole single throw type. Two seperate contacts with two common Inputs. Adam
  9. Arouse1973

    PID Control of an Induction Cooker.

    Most circuit will require some capacitance across the supply to ensure stability. I would put a 22uF and a 100nF across the supply lines for your circuit. Make sure the voltage rating of the capacitors is above the max D.C voltage of your circuit...
  10. Arouse1973

    PID Control of an Induction Cooker.

    You dont owe me anything, it's my pleasure. So nice to deal with such a greatfull person for a change. Adam
  11. Arouse1973

    Non-changing current with C-EMF

    Every component is ideal. Remember in the real world every component has LCR. Adam
  12. Arouse1973

    Need help with repair

    Give us some clear pictures. Thanks Adam
  13. Arouse1973

    PIC microcontroller

    Ok no probs Adam
  14. Arouse1973

    Non-changing current with C-EMF

    "How fast would it be? Equal to the rate of counter-emf's induction?" In an ideal world yes. Adam
  15. Arouse1973

    PIC microcontroller

    That's what the C is. The re-programmable versions have an F in the part number like PIC16LF84A. These parts are flash devices and can be re-programmed. Adam
  16. Arouse1973

    PID Control of an Induction Cooker.

    I am also slow, I make as much progress sometimes as an asthmatic ant carrying heavy shopping. But when I do understand things it is usually there to stay. All the best Adam
  17. Arouse1973

    PIC microcontroller

    What do you mean can be used like the Atmega328? Are you thinking of using the device you have? I think your going to have problems there. It's one time programmable. I think the only time you can reliably re-program it is if you knew where the last address of program memory was and start your...
  18. Arouse1973

    PID Control of an Induction Cooker.

    He is a circuit that I think might work. You may have to change the timing components for what you want. But it shows the circuit switching off after about 10 seconds and then on again when it sees the next pulse. If it sees a pulse within this time the circuit doesn't switch off. You will need...
  19. Arouse1973

    PID Control of an Induction Cooker.

    Ok so when do you want it off, when the signal is off for 0.9 seconds? Adam
  20. Arouse1973

    PID Control of an Induction Cooker.

    No I think your right I just needed the answer you just posted. Adam
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