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  1. KJ6EAD

    18 AWG multi conductor flat wire by the foot?

    Have you found a manufacturer product # yet? Alpha, Belden, Carol, Daburn, Hitachi, etc.
  2. KJ6EAD

    blowing up capacitors

    I recommend the use of an appropriately sized piece of hardware cloth as a shield to keep the larger bits under control during these "experiments".
  3. KJ6EAD

    Any help reading amplitude and frequency

    If you're looking for a way to predict the frequency and amplitude from circuit parameters and component values, the 555 datasheet and application notes can help.
  4. KJ6EAD

    Trying to make LED's light up on a HI not a LO.

    Simply reverse the polarity of the LED, disconnect the top end of the resistor from Vcc and connect it to ground instead.
  5. KJ6EAD

    cutting traces, lifting up IC pins, what tool to use?

    As Steve said, you must dress the tip of a package-specific desoldering iron with plenty of solder to create a good thermal bridge. This burns the flux out of the solder so you have to thoroughly flux the leads of the target component. Take a look at this video for more techniques. Most of what...
  6. KJ6EAD

    cutting traces, lifting up IC pins, what tool to use?

    The problem is not too much heat but heat for too long a time. It may be counterintuitive but you need more heat so you can spend less time on the joint. You want to quickly heat the pads/lands and component leads but not soak heat down into the epoxy.
  7. KJ6EAD

    cutting traces, lifting up IC pins, what tool to use?

    No. Don't do that. I think repair techniques were covered in your other thread. Occasionally as a jumper for burned out traces.
  8. KJ6EAD

    cutting traces, lifting up IC pins, what tool to use?

    Look at my last post. I was editing while you were composing your post.
  9. KJ6EAD

    cutting traces, lifting up IC pins, what tool to use?

    I like a small ball engraver tip on a Dremel for trace cuts. The 190 and 191 bits are about the right sizes. I can't understand the rest of your questions. Now I see what you're up to after reading Weird Dave's response. Any thin insulator material such as a bit of Kapton (polyimide) or...
  10. KJ6EAD

    Blown capacitors in PC

    The problem was so pervasive that it came to be called the capacitor plague. http://en.m.wikipedia.org/wiki/Capacitor_plague
  11. KJ6EAD

    Nuclear Plant help

    I provided a link to the relevant Wikipedia page, even quoted the most pertinent portion but have yet to achieve critical mass.
  12. KJ6EAD

    Identify this capacitor

    The images of boards with the capacitor present were noted as "similar" and were found on the internet, not in the OP's posession.
  13. KJ6EAD

    I need a lead.

    Replace the electrolytics and see how it goes. Be sure the new capacitors are a quality brand and have a 105°C temperature rating.
  14. KJ6EAD

    very new and dont know enough about capacitors

    They can cascade fail in short order once the first one does and the others are left to cope with the ripple current. These capacitors are connected in parallel to share the load in a penny pinching circuit design.
  15. KJ6EAD

    very new and dont know enough about capacitors

    They can all fail without any other external cause if they were part of the capacitor plague. http://en.m.wikipedia.org/wiki/Capacitor_plague
  16. KJ6EAD

    I feel like a thief!

    I was in the last electronics class at my high school that used vacuum tubes. We breadboarded a 5 tube AM radio. The school switched to transistor trainers the next year. Tube amps still seem to be popular for guitars.
  17. KJ6EAD

    ultimate beginner multimeter?

    David Jones has done lots of meter reviews on his video blog. Look for the $50 meter shootout (episode 91) and the multimeter buying guide (episode 75) among others. http://www.eevblog.com/episodes/
  18. KJ6EAD

    Identify this capacitor

    I agree. There is a smooth convex solder bump on the lands indicating it was pasted and reflowed but not populated.
  19. KJ6EAD

    LG DVD Player - Tray ejects after 10-15 mins.

    It could be caused by a flaky tray eject switch or tray detect switch or the associated pullup/pulldown resistor. The fact that the fault is occuring at about the same time of each playing suggests either a thermal effect or capacitive charge affecting a transistor switching action. If you...
  20. KJ6EAD

    I feel like a thief!

    Gonzo, the guilt must be eating you up for you to come here for absolution. You must be feeling pretty low after taking advantage of that poor man and his (probably late) father. How many of those tubes will you need me to take from you before you feel better? :D Actually, I've never had much...
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