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  1. ante1

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

    Hi gaark. I have seen a PSU that was equipped with a triac regulation on transformer primary. The way they done it was using a dual potentiometer for the voltage control, not a closed loop. The set-up was about 8 volts difference with no load. I think if you want a closed loop control you have...
  2. ante1

    regulators

    I believe the filtered output is a necessity because the way switchers work. They shop the current at 40 to 100 kHz (sometimes more) and create spikes and some interference that must be restrained. Ante ::)
  3. ante1

    led driver

    Ok, I have missed it then, what is the chip id please? Ante ::)
  4. ante1

    Need Datasheet for Sunplus SPCA711A

    Go to http://www.doom.com/results_sample.asp and type in SPCA711A. Ante ::)
  5. ante1

    produce electricity using quartz cristals...

    Hi. bogdan. The energy in this is very low; I don
  6. ante1

    led driver

    If you only have 2 volts, what
  7. ante1

    Need Datasheet/Pinout for 29W320

    Hi. Try this one, hope it's the right one! http://www.searchdatasheets.com/search.asp?q=29W320&t= Ante ::)
  8. ante1

    Big Datasheet Database!

    Good Job! Thanks! Ante ::)
  9. ante1

    Casio (COM16T1151EL) TFT-LCD Datasheet

    Hi Hope this will help you. http://www.casio.co.jp/ced/english/pdf/E_PDF/model/T1151.pdf. Ante ::)
  10. ante1

    LM317 Variable power supply

    Hi MP. Isn
  11. ante1

    my first design.. pls help

    Hi. I think C2 and C3:s connections should be as short as possible and be located closer to the regulator. Ante ::)
  12. ante1

    led driver

    Sorry. All white led:s I have seen so far are 3.6V drop so 5 Volts will to fine. Unless it was 2.5 V stated in the question instead of 2 - 5 Volts, as I believed. Ante ::)
  13. ante1

    led driver

    Why use a chip for this, just a couple of resistors will do the job. Ante ::)
  14. ante1

    help about inverters

    Hi! A voltage doubler will give you higher voltage but not much usable current! I think it
  15. ante1

    Power supply for AMP in CAR

    MP, OK, there are some things I still not agree on. One example: how can a 10Amp load suddenly pull 100Amps through one transistor even if the transistor should be shorted?? I must have a lot to learn about this. But because this is not the right forum for this I rest my case. I am also...
  16. ante1

    Power supply for AMP in CAR

    OK, suppose we have four transistors in parallel and we like to switch say10 Amp@12 Volts. The transistors are not exactly the same (not from the same batch) but we want to use them anyway. The first has 0.2 V drop the second 0.3 the third 0.25 and the last 0.25. This does not mean that all the...
  17. ante1

    Power supply for AMP in CAR

    Hi MP & hotwaterwizard ! I, we checked the link and it was nice reading, lots of good thinking and valuable info. But this project is a linear one and stubborn as I am :)I still state that switch mode is very different from linear. You don
  18. ante1

    Power supply for AMP in CAR

    Hi MP. I agree to that, but even if one resistor (transistor) is smaller they are all in parallel. I don
  19. ante1

    Power supply for AMP in CAR

    Hi MP. I
  20. ante1

    Build a simple PC oscilloscope

    Here is an attenator for pc oscilloscope that is used for soundcard input but it will probably be possible to apply in this case. The site is in Norwegian but the schematic is pretty simple. http://home.online.no/%7Esondred/Gamle%20sider/attenuator.htm Ante ::)
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