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  1. ante1

    STRZ1503

    Try here when it's not too busy: http://icproducts.ic37.com/1007.htm
  2. ante1

    Rocket Staging Circuit

    Hi Ray, Welcome to our forum. Depending on for how long time you need the 12V @ 2-3A it might work to store this energy in a capacitor. The small 9V (PP3) batteries can not supply 2-3A!
  3. ante1

    Why 60 hertz or 50hertz

    Hi Don, This is a large topic, could you specify what you need to know? In some cases there are no big differences, in other it means “life or death”. You can destroy a transformer made for 60Hz when running it of 50Hz. Some types of electric motors run faster on 60Hz than on 50Hz.
  4. ante1

    Doubling 7805 regulator current is effective?

    Any of these will work fine and does not generate much heat!  ;)
  5. ante1

    Doubling 7805 regulator current is effective?

    Hi wuemura, Can you get hold of a MAX 724 or an LT 1074 where you live?
  6. ante1

    Total newb to electronics - what's the best tutorial??

    Good thinking jack! ;D
  7. ante1

    Where can I buy FeCl3?

    Have you checked your yellow pages for chemicals?
  8. ante1

    What makes a good solder desolder station?

    As I said if you are serious, but of curse your budget will set some limit too!   Tecno: Honestly, I don’t know anything about this equipment but it looks good.
  9. ante1

    220 volts Versus 120 volts

    Hi Don, Basically it’s P = U * I . The transformer puts up a higher resistance at a higher frequency which means fewer turns of wire thus a smaller transformer.
  10. ante1

    cell phone charger

    Hi Don, Since the charger is marked 100mA this is assumed to be the maximum current. The maximum current occurs at the lowest voltage. At 240VAC we can assume the current to be about 50mA.
  11. ante1

    Where can I buy FeCl3?

    Multiple posting of this question will not help you find the stuff, telling us where you live might! ;)
  12. ante1

    electrically charged fence

    Something tells me you don’t love your neighbors! ;D
  13. ante1

    What makes a good solder desolder station?

    If you are serious about electronics go for a known brand and just buy the things you need!
  14. ante1

    Total newb to electronics - what's the best tutorial??

    Yes Jack, That’s what I usually recommend, really good literature! ;)
  15. ante1

    220 volts Versus 120 volts

    ONLY! :o  Are you kidding? Here we have 3 phase 400V for heavy appliance (stove, washing machine or a welder) and 230-240V for everything else this allows thinner wiring and lower losses (but slightly bigger transformers since we have only 50Hz)! ;D
  16. ante1

    USB voltage question

    Hi casdale, The 12V fan might not crank up at all on 5V, it depends on the fan. Furthermore the use of 5V from the USB will increase the heat in your laptop even more.
  17. ante1

    cell phone charger

    Hi don, Max 750mA is the maximum secondary load and 100mA is the mains current at the primary! Input power is 120 * 0.1 = 12W and output power is 12 * 0.75 = 9W.
  18. ante1

    220 volts Versus 120 volts

    Hi AG, I think you got it reversed here, with 230V it’s cheaper because the power companies can use half the wire gauge for the same kWh and the transmission losses are less with higher voltage. From where I see it $0.07 / kWh is not cheap! :o
  19. ante1

    Help out a newbie just starting

    You’ve got an answer at the identical post you have made elseware in the forum!
  20. ante1

    Turn on after 3 seconds turn off

    Also check the output stages power transistors or power module whichever used in this unit and the large rear end caps. If the fault is intermittent try freeze spray to locate the problem.
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