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  1. Arouse1973

    Inverter problems please help

    Cool glad you got it working. Thanks Adam
  2. Arouse1973

    Gerber files

    Have you got any pictures of the prototype?
  3. Arouse1973

    Gerber files

    Hi Paul. You normally design it in a PCB schematic and layout program like DipTrace which is free. But there are lots of free packages out there. Do you have a circuit diagram I can see? Adam
  4. Arouse1973

    More than just old caps

    God what a messy circuit diagram. It looks like the main audio output is sampled by the NOR gate IC. When the audio from the main IC is high enough; C909 charges up through D909 this puts a logic high on pins 5 and 6 of IC901 which in turn triggers pins 1 and 2 low which makes pin 3 high and...
  5. Arouse1973

    am outta here

    All the best Donk! Adam
  6. Arouse1973

    Arduino relay driver circuit

    No problem, Adam's just fine not Mr Adam :)
  7. Arouse1973

    Arduino relay driver circuit

    The diode protects the transistor from the potentially high fly-back voltage produced by the relay coil when the relay switches off. Thanks Adam
  8. Arouse1973

    Inverter problems please help

    Let me know how you get on. cheers Adam
  9. Arouse1973

    Gerber files

    Hi Paul What software package did you design the circuit in. I would have thought the software you used can create them, you don't have to pay for them. Thanks Adam
  10. Arouse1973

    Inverter problems please help

    That's ok. If you look at the output and trace it back, you will hit a transformer, that's the thing that gives you your output. You fed mains into the output so the mains is going to get through to the other side because it's a transformer, although it will be a lower voltage because it will be...
  11. Arouse1973

    Inverter problems please help

    Here's another circuit http://schematics.circuitdiagram.net/viewer.php?id=bwy1303597284b.gif Thanks Adam
  12. Arouse1973

    Inverter problems please help

    It difficult to tell where you are measuring without a circuit diagram. I have had a quick look at some circuits online and basically the MOSFETS drive a transformer. Here is an example. Not sure why you are seeing 222 V d.c http://www.lz2gl.com/power-inverter-3kw/ I couldn't find one for go...
  13. Arouse1973

    Inverter problems please help

    The differences between the two shouldn't make any difference but it's always best to replace like for like. The non B version looks like it might be obsolete, the one from ST is. Adam
  14. Arouse1973

    Lm386 Audio amplifier

    Maybe your expecting too much from this little amplifier, thing is how loud is not loud enough :) Adam
  15. Arouse1973

    Inverter problems please help

    Yeah ok. Just re-read your thread and you say you have 330 Volts DC, it concerns me that this voltage is appearing on the DC rail. I would have expected 24 Volts. Or is this not on the power rail for the MOSFETS and somewhere else. Thanks Adam
  16. Arouse1973

    Inverter problems please help

    Ok thanks. So basically you put mains on to the output of the inverter whilst it was still connected to the appliances? Thanks Adam
  17. Arouse1973

    Inverter problems please help

    Um can't see anything that stands out as damaged, we could really do with a circuit diagram. I'll see if I can find one. Cheers Adam
  18. Arouse1973

    How to get a constant 5V output regardless of input voltage?

    Hello. A buck boost regulator is what you need. You will find many on the net. Let us know if you need any help. Thanks Adam
  19. Arouse1973

    Inverter problems please help

    Got any pictures of the inside of the unit? Cheers Adam
  20. Arouse1973

    Electronic Principles Home Work

    I did think that about the units but I guess they want them to spot that and try and work it out. Your wooden beads are working correctly Trevor. :) Adam
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