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  1. Arouse1973

    Using PWM to regulate power dissipation

    I am getting confused now, this is jumping about too much for me. Adam
  2. Arouse1973

    What size Capacitor do I need ?

    Assuming a drop of say 0.5 Volts so the capacitor starts at 12 Volts and drops to 11.5 Volts then you will need approx. 1200F. So say a 100F at 2.7 Volts you will need 6 in series for the voltage rating (to be on the safe side) and 12 in parallel. So that's 72 capacitors. At about £3.00 each...
  3. Arouse1973

    Using PWM to regulate power dissipation

    Every time you convert AC to DC using diodes aren't you are adding a non linear load into the mix? Adam
  4. Arouse1973

    Using PWM to regulate power dissipation

    Right ok dorke, it wasnt that clear, thankyou! Adam
  5. Arouse1973

    Driving MOSFET with IR2104

    You are welcome. Adam
  6. Arouse1973

    Using PWM to regulate power dissipation

    Oh sorry I thought this was voltage noise on your output? What is the scope trace showing? Adam
  7. Arouse1973

    Using PWM to regulate power dissipation

    Add some capacitance to the output. Adam
  8. Arouse1973

    Driving MOSFET with IR2104

    Reduce the nagative voltage to its min and if this does not work then make voltage measurment of each pin with respect to common and post them here. Adam
  9. Arouse1973

    Using PWM to regulate power dissipation

    Hello, you may need some capacitance after the diodes, I guess you want a d.c level? Adam
  10. Arouse1973

    Driving MOSFET with IR2104

    The lowest input voltage is -0.3 volts not -5 volts.
  11. Arouse1973

    Driving MOSFET with IR2104

    What is your input voltage level?
  12. Arouse1973

    Need advice on my first circuit. >Transistor motor controller<

    Yes look at how a transistor is made and look at the levels of dopant used for each terminal of say an NPN for example. You also have operating voltage limits less than used the correct way around. Adam
  13. Arouse1973

    Need advice on my first circuit. >Transistor motor controller<

    It will anyway but the gain of the transistor is much reduced connected the other way. Adam
  14. Arouse1973

    Need advice on my first circuit. >Transistor motor controller<

    Hello You have your emitter of the transistor connected to +12 volts, is this correct? Adam
  15. Arouse1973

    Galaxy heat Press LCD fault

    Thanks Paul, it's really hard to see anything being that the PCB is black. If you have a multi meter you could see if you have a connection from the live tab to the fuse, and also check the 1.25 A fuse that protects the PCB. Other than that U think you are going to need someone to look at it in...
  16. Arouse1973

    design of double tail comparator using cmos of 90nm technology

    This doesn't look like an LT Spice design?
  17. Arouse1973

    Galaxy heat Press LCD fault

    You could give these guys a call. Ask to speak to Cliff Withers (MD), tell him Adam from Spinnaker sent you thinking he might be able to help. http://www.quick-circuits.com/ Thanks Adam
  18. Arouse1973

    Galaxy heat Press LCD fault

    Hi Paul, can you take a closer picture of the area and also the other side marking both sides in red as you have done for the first picture. Adam
  19. Arouse1973

    Hello from Wales UK

    Hi Paul, welcome to EP, hope you enjoy it here. Adam
  20. Arouse1973

    TV interference from LED lamps

    There appears to be a couple of LED lights that work with this type see here: http://forums.whirlpool.net.au/archive/1900261 Thanks Adam
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