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  1. ante1

    Boosting Regulator Current/ATX power supply

    MP, Audioguru I don
  2. ante1

    Electronic weighing system

    Darrin, The screw suggested by John can be highly accurate if you use a stepper motor to pull it. Then you can decide a number of steps for a dose and there will be no influences from the motors speed that can be the case with a timer. Just a thought! Ante ::)
  3. ante1

    On/Off heater controller using triac

    Darrin, That
  4. ante1

    On/Off heater controller using triac

    Darrin, The 4A triac will do the job mounted on a heatsink. It
  5. ante1

    Boosting Regulator Current/ATX power supply

    MP, I am not sure but in an old laptop I have with W98se it works. I don
  6. ante1

    On/Off heater controller using triac

    Darrin, For a start: Do you know the power consumption for the flexible heating element? A 4A triac on 230VAC (if this is your voltage) will limit the power to about 900W. For efficiency and ease of interfacing to temperature measuring circuit I suggest you look at the MOC3041 or MOC3061. The...
  7. ante1

    Oscilloscope testing module (huntron circuit)

    Bob, Welcome to this community. Here is an alternative for you to try. Ante ::) Curve-tracer.pdf
  8. ante1

    Boosting Regulator Current/ATX power supply

    Audioguru, I don
  9. ante1

    12v car to 5v dc 2.5a needed

    Stu, If you want it small light this is the way to go: http://bc107.republika.pl/pdf/max724-6.pdf Here is the circuit: Ante ::)
  10. ante1

    Boosting Regulator Current/ATX power supply

    Audioguru, You can use the Prt Sc (print screen) to copy from any document and just paste it in paint, cut it to size and you are done! Try it! The circuits is almost the same, I like to have the protection diode in there also. The value of R1 is not very important but if you use higher value...
  11. ante1

    Boosting Regulator Current/ATX power supply

    Audioguru, Sorry, I was starring at the wrong transistor on my drawing! I need some sleep obviosly! Ante ::)
  12. ante1

    Boosting Regulator Current/ATX power supply

    Audioguru, After checking my sketch again I discovered one mistake, I forgot to connect the collector with the VO of the regulator. Concerning the rest of the circuit I stand firmly! Posting the correct drawing here. I think a PNP transistor must have higher voltage on the emitter than on the...
  13. ante1

    Boosting Regulator Current/ATX power supply

    Audioguru, How can Q2 conduct when its base is 0.693Volts below the emitter? Please explain. Ante ::)
  14. ante1

    0-30 Vdc Stabilized Power Supply

    Mash, A 15-0-15V transformer can be used the same way as a 30V transformer just don
  15. ante1

    Electronic Software

    Hi All, Here is some software for electronics: http://freshmeat.net/browse/246/ Ante ::)
  16. ante1

    Best PCB design software

    Rhonn, There are non that I am aware of! If someone knows of any It would be nice :). I don
  17. ante1

    Device to scare mosquitoes..

    Rhonn, I have heard from people how have had success with these things, but they are in the frequencies that you can hear yourself (2200 to 3500Hz). So it is a question of who can stand it the longest you or the mosquito
  18. ante1

    Can Anyone Help Me With My DLP Projector???

    Jeff, Welcome to this community. Something similar happened to me with a projector, not the same brand but anyway. I found out that the problem was the cable from my laptop to the projector that was faulty. I hope this helps. Ante ::)
  19. ante1

    Boosting Regulator Current/ATX power supply

    coder, The battery voltage (12.7V-5V) * 1.3A = 10W of heat, this needs a good heatsink. I hope you are aware that this circuit have no over current protection! I recommend you to make a modification to be safe. Like this: Ante ::)
  20. ante1

    Boosting Regulator Current/ATX power supply

    Coder, As far as I can see the circuit is OK as you have drawn it. I have to ask: what is your input voltage to this circuit? Ante ::)
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