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  1. ante1

    Can someone please tell me what this is.

    Dazza, The switch contacts are hermetically sealed so it will not ignite hydrogen ;D and also they are protected from dust. If you can find the manufacturer and some numbers you might be able to identify its rating.
  2. ante1

    Who is using the oldest computer?

    Hi Audioguru, You should try Eagle (or any similar software) with some big pcb layout and then redraw or retry and you will see what I mean! Also Photoshop work will show the difference. I didn
  3. ante1

    Re-called Light Bulbs

    Audioguru, Rhonn, Do you have any : http://www.ikea.ca/ms/en_CA/ikny_splash.html shops near you? They sell the cheapest compact fluorescent bulbs where I live. I have had two of them for a very long time, more than 6 years and they are still in good health. One of them is in the kitchen and it...
  4. ante1

    Potential divider

    The current through both resistors is the same since they are in series. I = U/R . 12/300 = 0.04A. This is the current in the resistors. The voltage over the 200 ohm resistor U = R*I. 200*0.04 = 8Volts. I am sure you can calculate the second voltage yourself. ;D
  5. ante1

    Need to identify a diode

    Hi Dazza, Steven, Well I can see International Rectifier has produced it and as Steven says its very likely to be a 10A diode. The one to the right, does it have a clear diode symbol too other than the one in the IR logo?
  6. ante1

    Can someone please tell me what this is.

    I just remembered ::) that they are called magnetic reed switch or reed relay. And there is one of these inside the coil:
  7. ante1

    Can someone please tell me what this is.

    Hi Guys, I am fairly sure this is a relay. The kind with a glass tube in the middle!
  8. ante1

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

    You can
  9. ante1

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

    Hi Audioguru, This is not entirely true, I have charged many batterys in this way and never caused any damage. If you just do it right there is no problems as I see it. For example to charge a car battery, set the voltage to 13.75Volts then connect the battery and set any current up to 5% of...
  10. ante1

    How two use this transformer for PSU.

    Hi Dazza, It
  11. ante1

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

    Hi Kain, Just make wire connections for R7 on the pcb and bolt the resistor to the chassis instead. Some of these resistors can only take one third of the wattage without any heatsink. At 5A the resistor will dissipate almost 7W and you don
  12. ante1

    Transformer ratings?

    Hi Rhonn, I think it will work fine with this transformer if it
  13. ante1

    Question about light sensor circ in Projects section

    John, I tried to see it but all I got was this:
  14. ante1

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

    You have to explain what you mean, it
  15. ante1

    Who is using the oldest computer?

    Audioguru, You know the difference between the 486 and a Pentium 4 is enormous! It
  16. ante1

    Who is using the oldest computer?

    Hi Audioguru, Amazing how cheap computers are now compared to the early 90:s. A 386 with 20Mb HD and 256kb memory was almost $4000 US and now the latest with extra everything is less than $800 US.
  17. ante1

    Question about light sensor circ in Projects section

    Hi John, Have you considered this circuit http://www.electronics-lab.com/projects/sensors/004/index.html By changing the 270k resistor to a potentiometer you can vary the size of the
  18. ante1

    Garage door Status Indicator

    Yea, or a wise ass! ;D ;D ;D
  19. ante1

    Can I use this capacitor instead??

    Hi Dazza, I can
  20. ante1

    components swap

    Dazza, I think this is a very commendable thing you want to accomplish. However the shipping costs might be the biggest obstacle to overcome. Or perhaps if you let the receiver pay for the shipping it will work out fine.
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