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  1. allvol

    Electronic formula's ???

    Thanks for helping Need find the solution to his problem. AllVol
  2. allvol

    Simple help with transistors!!

    While you are waiting on Audioguru's answer, you might want to look at the attachment, which shows a transistor driving both a LED and a buzzer.
  3. allvol

    Why does a transistor heat when base current is high

    Hello, prince How are you using your transistor?
  4. allvol

    Help, IC!!!

    Looks like it can.
  5. allvol

    HELP - resistors and dip-switch

    Virus, Re: your reply #62 Could you be expecting too much?
  6. allvol

    HELP - resistors and dip-switch

    Hello Virus, with Audioguru and others, I've looked into this noise matter even to the extent of doing several breadboard versions.
  7. allvol

    HELP - resistors and dip-switch

    GM, Virus From the 4QD website: In a practical low voltage controller the switch opens and closes at 20kHz (20 thousand times per second). This is far too fast for the poor old motor to even realise it is being switched on and off: it thinks it is being fed from a pure d.c. voltage. It is also...
  8. allvol

    HELP - resistors and dip-switch

    Well, Virus, I don't know what to say.
  9. allvol

    Simple help with transistors!!

    ummm... Um I don't really think IR is the way you want to go.
  10. allvol

    HELP - resistors and dip-switch

  11. allvol

    HELP - resistors and dip-switch

    Hi All, I'm back, and humbly apolegetic.
  12. allvol

    HELP - resistors and dip-switch

    Hi Virus, I'm due at the golf course shortly, so don't have but a minute. Glad it's working!
  13. allvol

    HELP - resistors and dip-switch

    rr fb Virus Glad to hear your fans are working at last.
  14. allvol

    [help] Getting pure DC current

    My point is that Draggy apparently is using his meter wrongly in an attempt to find the "AC" that is hampering his PIC operation.
  15. allvol

    HELP - resistors and dip-switch

    Hello, Audioguru Man, I respect your longevity on this forum and your experience, but I must disagree with you on your circuit for this project, in that it does not follow proper operation procedure for the 555 timer.
  16. allvol

    [help] Getting pure DC current

    Thank you, audio A very excellent explanation of ripple effect and the almost universal necessity of using bypass capacitors in many circuits. Failed to answer my question, though. AllVol
  17. allvol

    [help] Getting pure DC current

    Just for clarification, why would one want to measure the DC voltage of a battery on the AC mode of a VOM?
  18. allvol

    HELP - resistors and dip-switch

    Hello, Virus As long as you are still breadboarding, you could go ahead with the original 555 circuit to see what happens. But before you do, make the changes to Audioguru's latest circuit, to conform to the textbook version.
  19. allvol

    HELP - resistors and dip-switch

    Okay, Virus, maybe this will clear it all up. In my attachment below, audioguru's version of the 555 as a pulse width generator is compared with the textbook version, as offered by the 555 Timer Pro program from the Schematica web site.
  20. allvol

    HELP - resistors and dip-switch

    We're talking about the original circuit, the one you called lousy.
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