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  1. ante1

    PSU Activation

    Hi AJB2K3, The green is the power on signal, all the wire colors are explained here: http://www.pcguide.com/ref/power/sup/parts_Motherboard.htm Just roll down a bit and you find all the connectors, wires and colors. ;D
  2. ante1

    Transistor as a switch

    Hi John, I think S2 should be a NC not NO as drawn here.
  3. ante1

    Car Fuel Pump Amp Rating for Household Power Supply..

    Hi Mhz, A transformer rated 120
  4. ante1

    Choosing terminals for step down transformer

    That
  5. ante1

    Choosing terminals for step down transformer

    Hi pratik, Welcome to this forum. The thickest wires should be the secondary (24V) winding, but to be sure you can measure the resistance in both windings. The lowest resistance is the secondary (24V) winding. Looking forward to see those pictures! ;D
  6. ante1

    problem with a rectifier

    Yes, that
  7. ante1

    Car Fuel Pump Amp Rating for Household Power Supply..

    Hi MHz, If you have a similar fuel pump in you vehicle it
  8. ante1

    Construction design!

    Hi Alun, For safety I would like to add: Don
  9. ante1

    problem with a rectifier

    Hi shekhar, A happy 2005 to you too. This can be noise, sometimes it can be cured by adding 10nF cap over each of the rectifier diodes.
  10. ante1

    PSU Activation

    Hi Yevgeni, Usually there is a label on the PSU which gives you this info, but if there aren
  11. ante1

    Logic Works 4 !!!!

    Hi Enigma, This would be my first question at a
  12. ante1

    "Safe" 5000 V

    Hi Yevgeni, It
  13. ante1

    Parts supplier

    I would look for a trashed old ATX motherboard to scavenge these from, unless of course you need them in quantity.
  14. ante1

    electronic valve shower, do you have an idea???

    You can control a mains powered valve via a small relay, or a triac and an optoisolator. There are some nice solenoid valves to be scavenged in scraped washing machines and dishwashers .
  15. ante1

    Alphanumberic 16 segment display

    Hi Alun, Sorry, I misunderstood because I did not read your question properly. :-[ You can make moving patterns on it just for fun. Or maybe you like to do something more serious with it?
  16. ante1

    Alphanumberic 16 segment display

    Hi Trent, Here is a suggestion for you: http://www.electronics-lab.com/projects/pc/020/index.html Good Luck!
  17. ante1

    Temperature:Speed Timer Circuit?

    Hi MP, Thanks for the info.Yes I am familiar with the difference between NTC and PTC resistors they are not very complicated. Here we use the PT-100 & PT-1000 for meteorological purposes not NTC:s. I use contact free measurement up to 100C the SMTIR9901-2 from Smartec. About thermocouples...
  18. ante1

    Temperature:Speed Timer Circuit?

    Audioguru, I might be wrong but a
  19. ante1

    Temperature:Speed Timer Circuit?

    Hi Audioguru, That will make a much better circuit, but it
  20. ante1

    Strange observation

    Hi Siddharth, This is completely normal for this kind of DC adaptor. It can be fatal to any low current 12V circuit so be careful when using it for anything other than what it is designed for. Whatever it is designed for can be equipped with a built in regulator and is then safe. There is some...
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