Search results

  1. B

    Re: Dog Bark Remover

    You'll need something more like a DSP and some serious programming skills.
  2. B

    Re: DEAD TV SET

    One or more of the hundreds of parts inside has failed. One or more of the hundreds of parts inside has failed. One or more of the hundreds of parts inside has fail...
  3. B

    Urgent reply is needed

    When's it due?
  4. B

    Remote control vibrating alert bracelet

    Sounds like a pager would do the trick. Long range, low fees, vibrate.
  5. B

    Re: barcode reader with microcontroller

    Your keyboard seems to be busted.
  6. B

    Urgent reply is needed

    You've been a member since 2006 and ALL YOUR SUBJECT HEADERS say PLZ help or Urgent. Can't you come up with something more descriptive?
  7. B

    PCB drill press design

    True, a high speed bit like a dremmel would be much better. I've not drilled my own PCBs in years.
  8. B

    PCB drill press design

    ebay got ones like this starting at $9.95
  9. B

    Convert your projects in 3D mode

    I've been doing it the hard way, using Sketchup 3D. And you can do more than just PCBs
  10. B

    Driving an LCD backlight with FETs or transistors?

    I'll have to add 2N4401 to the junkdrawer. I've got plenty of 2N2222A. Can I use a 680 resistor to drive it.
  11. B

    Driving an LCD backlight with FETs or transistors?

    Well as usual audioguru got me thinking about driving transistors to saturation. I've been using MOSFETs (sometimes incorrectly) and I have a problem that may or may not have a simple solution. I wanted to use a 2N7000 but it's only rated for 200ma continuous.  I'd like to switch as close to the...
  12. B

    High Power LED Mood Lamp

    Ahh thank you, I'll use the 2N4401 Do you know the 2N equivalent of the BC548 & BC558?
  13. B

    High Power LED Mood Lamp

    Ok is a 2N2222A a workable transistor? or a 2N4401?
  14. B

    High Power LED Mood Lamp

    I've got a Vgs of 20v on the datasheet, and a Vgs MAX of 4.0 on the same datasheet... http://www.aoc.nrao.edu/~pharden/ref/_IRF510.pdf Ahh, I see, the MAX 4V is the minimum it needs to switch on...
  15. B

    My high voltage experiments and schematics

    ROTFL free energy from coils, perpetual motion. Funny stuff.  It's May 1st not April 1st...
  16. B

    mosfet problem

    It's not a working design. try switching something not lethal first. The gate has no point of reference. Also RS is not a great source of HV electronics. Is the 500V AC or DC? You need isolation between your 10V and the 500V like an optoisolator. 500V can mess up your day, life etc...
  17. B

    mosfet mayhem

    Should anyone not familiar with 500V electronics be playing with 500V?
  18. B

    High Power LED Mood Lamp

    On MOSFETs like the IRF510 which had an on resistance of 0.54 ohm won't even get warm at 350ma. No gate resistor is required and the PICs outputs will drive em fine at 5V. They are expensive though, much more than a 2N2222A + 680ohm resistor.
View older results
Top