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  1. ante1

    Scientific American Projects

    Yevgeni, You know, like an overview of the projects covering all the issues.
  2. ante1

    Alkaline Charger??

    12412, I know it is possible to charge alkalines but they are not really made for this. I do not recommend it, things are known to go wrong if you do. To have a acceptable result you must charge when the alkalines are only half discharged and this is hard to supervice.
  3. ante1

    Re-called Light Bulbs

    All I can say is it
  4. ante1

    Car battery..........

    This makes no sense to me Kevin:
  5. ante1

    European applience in North America, question

    Not that it matter much but the motor will run a little faster (50 > 60Hz) if it is some sort of frequency dependent motor.
  6. ante1

    Radio transmitter

    tsuanu, Welcome to this forum, There are many kinds of radio transmitters, can you specify more exactly what you need. It will help if you can state the frequency AM, FM, wattage and so on. I am sure someone can help you if you supply more info.
  7. ante1

    Bridge rectifiers

    Matthew, It is not possible to just raise the voltage to overcharge a battery. When you raise the voltage the current rises too (unless it
  8. ante1

    lightbulb's role in car amp

    Hi Matthew, The only reason I can come up with is that the bulb acts as a bleeder resistor for the cap.
  9. ante1

    Re-called Light Bulbs

    Rhonn, You are perfectly right, don
  10. ante1

    electronic experment sites

    Have you seen this? http://www.mitedu.freeserve.co.uk/ Or this one? http://delabs.netfirms.com/cirdir/index.html This one? http://users.otenet.gr/~athsam/ I think these will keep you busy for some time. ;D
  11. ante1

    MOSFET amp. help

    I don
  12. ante1

    Scientific American Projects

    Hi Yevgeni, I am sure there are many interested readers here that will appreciate this! I know I will. Perhaps you have same kind of article or project register for all those issues to post?
  13. ante1

    Question about light sensor circ in Projects section

    Hi John, This extra resistor makes all the difference. The circuit becomes a Schmitt trigger, here is http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/schmitt.html a description of the Schmitt Trigger.
  14. ante1

    Car battery..........

    Hi Suraj, The battery is not a constant voltage source! The voltage changes with load and state of charge. And the 75A(h) is not the current it
  15. ante1

    Re-called Light Bulbs

    Audioguru, I sure pays to have a good look around before you by something. I have been looking for a GPS for my car for the last couple of weeks now and it
  16. ante1

    How two use this transformer for PSU.

    Hi Dazza, The bridge rectifier (D1) should be a 35A type. The power transistors, if you want 3Volts output at 9.5A at the
  17. ante1

    Convert 0-30V 3A PSU to 5A or more

    Audioguru, Well, the question was
  18. ante1

    Question about light sensor circ in Projects section

    Hi John, The velleman kit has no feedback so in case the pressure changes slowly the relay will rattle. If you want to reverse the relay function you can use the NO contact of the relay or swap the inputs on the opamp.
  19. ante1

    seeking parabolic mic circuit

    Hi Steven, I think here is a good one for you: http://www3.telus.net/chemelec/Projects/Parabolic-Mic/Parabolic-Mic.htm
  20. ante1

    Need to identify a diode

    It
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