Search results

  1. ante1

    Temperature:Speed Timer Circuit?

    Hi Twizted, I don
  2. ante1

    Buried wire detector

    Hi Kiwi, You need an invisible
  3. ante1

    What is Diac?

    Hi Suraj, I do not completely agree to your description of the diac as
  4. ante1

    new design need HELP !!!

    Hi Suraj, Yes, if it means cut all the power not only the control power there is of course no problem. However this is not the only way to shut down the SCR. ;D
  5. ante1

    DC Motor Speed Modulation

    Alun, Changing the frequency of the PWM can to some degree compensate this loss of torque at low power. To optimise the low rpm torque the frequency must be adjusted to the motor used since two motors don
  6. ante1

    PSU Activation

    This might help: http://www.pcguide.com/ref/power/sup/funcPowerGood-c.html
  7. ante1

    Simulation in Linux?

    Hi autir, There is no war here as far as I concern. I know a few persons who are deep into computers and a couple of them use Linux just for testing, but they all have it on a separate partition on their harddrives. None of these
  8. ante1

    Construction design!

    No, it
  9. ante1

    Simulation in Linux?

    Well, Bill Gates has not becomme stinking rich for nothing that
  10. ante1

    Digital multimeter powered by adaptor?

    Congratulations to your new computer! I can see the computer salesman cry when you left the shop! When he tells his boss about the deal he is going to be fired for sure, poor guy! $crooge has struck again! ;D ;D Yes I know how you mean, but it
  11. ante1

    Simulation in Linux?

    Hi autir, Well, when you buy a new PC (at least here) you get Windows with it if you like it or not and all updates are free. How much cheaper can it be? Last time I checked the
  12. ante1

    Digital multimeter powered by adaptor?

    Yes, I think he does. I just checked my Rohde&Schwarz bench multimeter and it has a transformer PSU built in. I wonder how they deal with this problem? The ranges on this meter go way down on both AC and DC ranges.
  13. ante1

    Temperature:Speed Timer Circuit?

    OK, as referred to in my last post Ra and Rb decides the ON and OFF periods. You can chose to exchange Ra or Rb or a part of Ra or Rb with the NTC to control the off or on time by temperature changes. The reason your timer is not complete is; there is no path for charge/discharge current for the...
  14. ante1

    Construction design!

    This is an example of construction design. What do you think, is this cool or just stupid and dangerous or is it perhaps art? Would you consider building a project along these lines? 8)
  15. ante1

    TDA1554 Two Channel Audio Amp Chip

    Hi, They are very much alike, you can download their datasheets here: http://www.datasheetcatalog.com to compare the different options included. So, was it possible to get one of these at your electronics shop?
  16. ante1

    new design need HELP !!!

    Hi trampe, Are you sure you can use SCR:s here, it
  17. ante1

    PSU Activation

    Hi Yevgeni, Do you mean the
  18. ante1

    Digital multimeter powered by adaptor?

    Hi Audioguru, How do they eliminate the phenomenon you describe in my bench top multimeter that is powered from 240VAC? Why wouldn
  19. ante1

    Temperature:Speed Timer Circuit?

    Hi Twisted, Your timer is not complete as drawn here, if you take a look at this page http://www.williamson-labs.com/555-circuits.htm you may find the solution. Second picture from top shows Ra and Rb and how the decide the charge and discharge time for the capacitor.
  20. ante1

    Switching power supply

    Hi Alun, Welcome to this forum. Nice and simple DC/DC project with good documentation, thanks! With some small changes it might be possible to run a laptop in your car with it. Most laptops run at 16
Top