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  1. Arouse1973

    Where to start? - beginner

    And shopping trolleys :) all that lovely plastic rubbing around. :) enough about my evening attire.
  2. Arouse1973

    Where to start? - beginner

    Ok. ESD (electro-static sensitive-device). ESD is one of the most important aspects even in todays devices that even have some kind of protection against such evens.. The event I am on about is static electricity. This is the electrical charge inballance that can occur on the human body...
  3. Arouse1973

    Where to start? - beginner

    Also remember to observe correct ESD handling. Otherwise some of your components will fail, either straight away or in time. This can make you think your circuit is causing the issue where it might not be anything to do with your design. This is one reason I dont like using old components, you...
  4. Arouse1973

    How to find resistances values in a voltage divider?

    You first have to choose a value of current you are happy with. These voltages can be produced with either very high or very low current. Let's say you are ok with 20 mA total current draw. Being a series circuit the same current will pass through each resistor. So you need to work out the...
  5. Arouse1973

    Can anyone tell me about it

    It was only when he showed the bigger picture and I saw it was a SIRF chip I thought ah, is it an inductor. Then the 0.3 Ohm measurement sort of gave it away, all though the component might have been faulty. Adam
  6. Arouse1973

    Can anyone tell me about it

    From what you have measured I think it's a 56 nH inductor. Similar to these. http://www.koaspeer.com/products/inductors/surface-mount-inductors/kl73/ Adam
  7. Arouse1973

    free cloud or open source schematic tool

    DIP-TRACE is quite good. Lots of components, a few of us use this on here. http://diptrace.com/ Adam
  8. Arouse1973

    Greetings from Belgium

    Welcome to EP Koen. Adam
  9. Arouse1973

    3.2v LEDs 12v battery

    Just use your soldering iron and a pair of tweezers or a small set of long nose pliers. Heat one end and pull carefully out of the solder joint. Do the same for the other side. You don't need the iron on them for long, just enough to melt the solder. Adam
  10. Arouse1973

    Bench power supplies! [help!]

    That will be Dan then better known around here as @Supercap2F
  11. Arouse1973

    Bench power supplies! [help!]

    Thats going to be one hell of a PSU at 24 Volts and 4 Amps. Thats going to need a very large heat sink. Adam
  12. Arouse1973

    Bench power supplies! [help!]

    Thank you Darling.
  13. Arouse1973

    Bench power supplies! [help!]

    I agree its so rewarding building your own circuit. I never heard of anyone getting a serious shock from 24 Volts. Just dont put your tongue across the terminals. The power supplies for LEDs are normally constant current. Not saying you cant use them just might be better to use a bog standard...
  14. Arouse1973

    Bench power supplies! [help!]

    Hello. First tell us how much money you have to spend. What current are you thinking your circuits would draw? A safer option would be to buy a wall wart or some other cheap PSU, say 12 Volts and build your own adjustable regulator. This way you are only dealing with 12 Volts and not 240. Adam
  15. Arouse1973

    Can anyone tell me about it

    Zener Diode perhaps?
  16. Arouse1973

    Appropriate diode fo my circuit

    All good. :)
  17. Arouse1973

    Appropriate diode fo my circuit

    Hi Tony welcome to EP, what are the value of resistors for the LEDs? Adam
  18. Arouse1973

    pulse

    Some people have use a diode rectifier and magneto to charge a small battery. I wouldn't have thought you would get much energy from the secondary winding to charge the battery. These are generally used for keeping the spark going in petrol engines that don't have batteries. Others may have...
  19. Arouse1973

    pulse

    Hello What will you be using this stored energy for? How much of it will you be using? Adam
  20. Arouse1973

    Hi

    Hi Andy, welcome to EP.....June isn't that far away :) Adam
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