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  1. ante1

    Micro Spot Welder

    Hi rfranzk, I checked out the link, it’s an interesting circuit but will it work for your application? I am not saying there is a problem with the circuit (because I have not built and tested it) but I would not have built it that way. 8)
  2. ante1

    Micro Spot Welder

    What and where did you find some examples in your research? I am not sure you can or even need to control the voltage. The voltage is not interesting, only the current.
  3. ante1

    Sequential Timers with PWM Motor Speed Control

    Someone said: a mix of brains is better than a mixed up brain. Whatever that means? ???  ;D I like you both very much, you make me feel young! ;D ;D
  4. ante1

    BJT power supply

    Hi Alun, Well you did it, made me think that is! I had to since you went from a complete circuit to an improved one and left some blanks in there! ;D I know what you mean. 8)
  5. ante1

    Hey is there anyone has "CMOS Cookbook" written by Donald Lancaster??

    Hey you Guys! I lost my copy in a move about 20 years ago; if I remember correct it had a dark green covers. I think I got it in 1972 or so! I would sure like to see it again in any shape! ;D
  6. ante1

    Sequential Timers with PWM Motor Speed Control

    Wow, 120 years of experience in the same thread!!!  Respect this!!  ;D ;D
  7. ante1

    BJT power supply

    Hi Alun, So, why did you omit the TL 431 then?
  8. ante1

    Sheet Metal Bending

    Hi Rhonn, You can have any profile of aluminium made in lengths as long as you are rich!  ;D
  9. ante1

    BJT power supply

    Hi Guys, Looks good, and what would you use as Vref?
  10. ante1

    Sequential Timers with PWM Motor Speed Control

    Good job Staigen! Now Alun can see the video too! ;D
  11. ante1

    portable DVD battery pack

    It’s probably the maximum rating for the adaptor which must be capable of charging the battery inside at the same time as running the device. ;)
  12. ante1

    BJT power supply

    Hi Alun, It might work but for stability don’t you think there need to be some kind of voltage stabilizer for the op-amp more than just the 10uF cap? The op-amp is more likely to be sensitive to fluctuations in the voltage than the original TL 431, they work in a completely different way. Just...
  13. ante1

    Sequential Timers with PWM Motor Speed Control

    I have tried to post the file but as usual with files bigger than about 5000kb I get this message:
  14. ante1

    Sequential Timers with PWM Motor Speed Control

    Hi Audioguru, Too bad, no blue tooth! It’s a very versatile system and fast too! To find the media file sort the folder on size and look for a file of about 9460 kb and there it is! You should clean out the garbage in these folders form time to time, once a week or so. Yes, I think you should...
  15. ante1

    Sequential Timers with PWM Motor Speed Control

    Hi Audioguru, I think every cell phone has blue tooth today, but your computer might not though unless it’s a laptop. You can buy a small USB-plug with everything ready inside, it’s very cheap. ;)  The Hydro-Foam file is already downloaded in your computer, as soon as you have seen it all just...
  16. ante1

    Stripboard CAD

    Hi autir, Why didn’t I think of that? That’s a good tip, thanks!  :D
  17. ante1

    Sequential Timers with PWM Motor Speed Control

    Hi Audioguru, To transfer files from your cell to your PC you use blue tooth it’s much faster than IR. And of curse you can post video files here, just zip it first! ;D Alun, With my old laptop I have the same problem to see the file, the difference is I use firefox in that one. Try IE on...
  18. ante1

    help digital weight scale circuit

    Hi feldspar, Here, some theory: http://www.allaboutcircuits.com/vol_1/chpt_9/7.html
  19. ante1

    pressure sensor.

    Hi glen, It’s a small wireless system, a transmitter is housed in each wheel.
  20. ante1

    Stripboard CAD

    Yes, I tried that and ended up in this thread! ;D
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