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  1. Arouse1973

    Help with a PCB diagram Gerber file

    Sorry I cant help any further without the gerber. Adam
  2. Arouse1973

    Help with potentiometer.

    Not sure what the fourth pin is for. It might be bass boost or something like that. Make sure the POT is a log type also. I would have thought you could find a replacment. Got any pics? Adam
  3. Arouse1973

    Help with a PCB diagram Gerber file

    What design software would you like it designed in? Adam
  4. Arouse1973

    Help with a PCB diagram Gerber file

    You already have the gerber dont you. Adam
  5. Arouse1973

    Help with a PCB diagram Gerber file

    Do you have a circuit diagram also. Does the PCB need to be the same size. Adam
  6. Arouse1973

    Help with a PCB diagram Gerber file

    It's Adam :)
  7. Arouse1973

    Help with a PCB diagram Gerber file

    Can you post a picture of the PCB gerber. So you have gerber and you want it converted to a PCB file and new gerber produced. Adam
  8. Arouse1973

    Low voltage, high current boost converter IC

    Wow your asking a lot. 10 Amps from a step up from worst case 3 Volts. Could you have two batteries in series, does it have to be 1 battery. Adam
  9. Arouse1973

    A relay which causes rf interferences?

    No I was joking, you have to carefull with high voltages. Basically it the voltage that jumps the gap and energy that make the crack sound you hear. Adam
  10. Arouse1973

    A relay which causes rf interferences?

    To get a nice spark you need high voltage say 16KV and say 100pF of capacitance and disharge this to a very low resistance like ground. This and the energy in the capacitor gives a nice spark. Adam
  11. Arouse1973

    A relay which causes rf interferences?

    Oh thats a shame, dont you have any friends you dont like. :) its only the voltage that causes the spark. Current will depend on the charge stored in the circuit. Because charge and time is current. Adam
  12. Arouse1973

    A relay which causes rf interferences?

    It's the spark created between the contact that causes the interference. It like having a motor without any suppresion capacitors. Adam
  13. Arouse1973

    5v in 48v out

    Hi Andrew Is there a reason why the input must draw 5 mA? Can it be less? Adam
  14. Arouse1973

    Complete temp. detecting circuit-Need help tuning to desired range

    You mean Thermocouple. It another form of temperature measuring device. They can be more accurate and have a much larger temperature range. They work by producing a very small voltage difference between two different metals joined at a hot junction (Seebeck Effect). The circuitry needed is...
  15. Arouse1973

    Complete temp. detecting circuit-Need help tuning to desired range

    Hello The POT VR1 is used to calibrate the sensor. At 25 deg C the breakdown voltage of the Zener is approx. 3V (2.98 V actually). VR3 is used to adjust out the offset of the OP-amp this is usually used to trim for a zero output when both inputs are the same. The trip point is controlled by...
  16. Arouse1973

    Help with Transistor testing

    Hello Jake The TL431 is a shunt regulator not a transistor Thanks Adam
  17. Arouse1973

    What is your favourite type of component?

    Op-amp. Do a lot of things with an op-amp. 555 timer, makes a nice looking door stop when 1000 of them are set in clear epoxy resin. :) Adam
  18. Arouse1973

    What is your favourite type of component?

    What a surprise!
  19. Arouse1973

    Circuit Breaker connection question

    No probs.
  20. Arouse1973

    Circuit Breaker connection question

    Fine to connect to either terminal. Adam
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