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  1. ante1

    Thevenin

    Hi MP, You might be the lucky owner of a fast computer or you are a very slow reader. ;D Just kidding, it might have to do with which software you are using to run it. I posted it mainly for the theorem. Alun, I am still waiting for the small Macromedia version!
  2. ante1

    4017 Problem

    Hi Alun, If you enter “Bill Bowden” in Google you end up with this: http://ourworld.compuserve.com/homepages/Bill_Bowden/homepage.htm I thought everyone knew this guy? ;D
  3. ante1

    Philips Practronics Test Set Service Manual

    Hi ffesquivel, Welcome to our forum. I don’t have any schematics for you but I like to know what is wrong with this thing? Does it have another name besides “Practronics” like a number combination as Philips usually has on their measuring equipment?
  4. ante1

    Radar Detector

    Hi aleena, Is it this http://www.electronics-lab.com/projects/misc/004/index.html circuit you like to build?
  5. ante1

    12 volt battery charger

    Hi walid, Thank you for the kind words. I think the M1.s internal resistance (or the shunt resistance) limits to some degree the current through the battery during the pulses. When the battery voltage reaches the preset value (TR1) Q2 will prevent further “pulsing” and LD2 will be continuously...
  6. ante1

    Hard dsk motor

    The hard drive motor is not a stepper, however it is electronically commutated. The circuit is included in the drives electronics and varies between different manufacturers.
  7. ante1

    An Ultrasonic Cleaner--Schematic

    You mean like this?
  8. ante1

    Wind power generator project

    Hi steve, If you got any wind it is possible! ;D  It depends on how much you like to spend and how much power you need. I helped a friend of mine some years ago with a small wind “powerplant” for charging a 12Volt battery in his fishing cabin. The things we used came from his garage and did not...
  9. ante1

    Google before posting

    If you try really hard you could find out anything by searching the net! That will make this forum obsolete! :o  Many times there is too much info on a subject which makes your head spin and you need to consult someone with a little more experience to help you sort it out! But I agree some...
  10. ante1

    Some ideas for a 24VAC dimmer?

    I know that’s why I asked because I like to see how you managed the trigging! ;D
  11. ante1

    still thinking

    Hi sony, Do you want to track both horizontal and vertical and what size and weight is your panels? 
  12. ante1

    Some ideas for a 24VAC dimmer?

    Do you remember what kind of diac you used?
  13. ante1

    Volt regulator & Battery

    Hi Alun, If you mean the LT1083 I agree it’s the better choice but much more expensive!
  14. ante1

    12 volt battery charger

    I guess Q 1 and 2 are answered in my last post. Q3 Why would there need to be any current flowing from the gate? Q4 If the circuit is built correctly there are no problems with the current. Q5 It is always a good idea to ground a project like this; if anything goes wrong with the  transformer it...
  15. ante1

    12 volt battery charger

    Hi walid, If you put a smoothing cap after the rectifier you will sabotage the function of this circuit. The circuit uses the half cycles (pulsing DC) to make it possible for the SCR to turn off, if it didn’t turn off each half cycle there would be to much current flowing! 8)
  16. ante1

    Volt regulator & Battery

    Try the LM338 or the LT1083 instead.
  17. ante1

    Once Again, but this time adjustable OFF-LINE SMPS

    Hi Shahriar, The ratio of the transformer winding decides the maximum voltage. By adjusting the feedback voltage it might be possible to get the output voltage all the way down to 0Volts.  
  18. ante1

    Once Again, but this time adjustable OFF-LINE SMPS

    Hi Shahriar, Maybe the TEA1507 is not the best alternative for you? Here is an example of a 550W+ of line PSU: The description is here: http://ludens.cl/Electron/PS40/PS40.html Even though this circuit has a fixed output voltage I am sure it will give you a good idea of how to build a similar...
  19. ante1

    LM317K regulator current problem

    Thanks, that sounds promising!  ;D
  20. ante1

    nokia 6610i

    Hi kerem, Unfortunately there are a few files which are corrupt, I haven’t noticed it before since I have not used all of them myself. I hope you can figure out what’s wrong whit your cell phone by means of the remaining and working parts. 8)
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