Search results

  1. KJ6EAD

    Repairs to fog machine

    Based on the testing you've done and the corrosion present on the base plate, I'd suspect a fault in the pump cable/connectors.
  2. KJ6EAD

    Component suppliers

    More US sources: All Electronics http://www.allelectronics.com/ Surplus electronic parts and hobbyist supplies. Proto Advantage http://www.proto-advantage.com/ Supplies an extensive line of SMT to DIP adapter boards. Sparkfun https://www.sparkfun.com/ Arduino and other...
  3. KJ6EAD

    GE Spacesaver am/fm cd player model 7-5290A Sept. 2001

    A "no disc" error will sometimes be generated as the laser LED weakens with age. On some players there will be a trimmer to adjust the power setting and you can adjust it.
  4. KJ6EAD

    What's a good voltage tolerance for a small power supply?

    This new learning amazes me, Sir Rouse. Explain again how sheeps' bladders may be employed to prevent earthquakes. ;)
  5. KJ6EAD

    Soldering flux pen

    Rosin? http://www.kester.com/products/product/951-Flux-Pen/
  6. KJ6EAD

    Wire Wrapping

    Let me Google that for you (since I know what they're called). http://lmgtfy.com/?q=wire+wrap+header&l=1 Sorry, I haven't had occasion to use lmgtfy for a while.
  7. KJ6EAD

    Wire Wrapping

    A search for wire wrap sockets and wire wrap component carriers will yield sources such as this: http://www.circuitspecialists.com/wire-wrap-ic-sockets
  8. KJ6EAD

    Trying to identify components...

    That meter looks very much like some Triplett models.
  9. KJ6EAD

    Hakko FX-888D

    The Weller PES51 handpiece tends to melt it's handle after a while. The similarly sized Hakko FX-8801 handle does not.
  10. KJ6EAD

    Omega special character

    The forum software supports UTF-8 (maximum compatibility with ASCII) as Kris said but our computer operating sytems and browsers are often mapped for UTF-16 (more characters) so that may be the crux of the problem. I've seen two different Omega symbols in some character sets as well; one the...
  11. KJ6EAD

    i am designing radio transmitter and reciever

    Neither is the ministry that has jurisdiction there. Good luck finding out what the rules are. http://www.mib.nic.in/demo.aspx
  12. KJ6EAD

    Simple light toggle design.

    A ubiquitous 555 in it's bistable configuration is another option. Each player would have two momentary switches, one for red and one for blue corresponding to the set and reset inputs of the bistable.
  13. KJ6EAD

    Need some help getting the right LED light for a project.

    Some Otter boxes may be small enough to house a battery powered light. http://m.otterbox.com/on/demandware.store/Sites-otterbox_us-Site/default/mHome-Show If you need to immerse the housing, you can add lead weight strips and fill the box with hydraulic fluid or mineral oil to reduce buoyancy...
  14. KJ6EAD

    Is there a chance to get blind or serious physical damage while prototyping ?

    I flicked a tiny droplet of molten solder into one of my eyes in exactly that way. It didn't hit the cornea or iris, just the sclera, but it hurt A LOT for a few days. Now I usually hide behind a big magnifier light or microscope when soldering or wear safety glasses, especially when desoldering...
  15. KJ6EAD

    Getting into the smartphone/tablet repair business?

    1. Replace forcibly removed micro USB connector with typical trace/board damage. 2. Replace damaged DC barrel jack. 3. Replace glued down with silicone, jammed between others and ground plane connected power supply filter capacitor. 4. Replace HDMI connector. 5. Replace tactile switch. 6...
  16. KJ6EAD

    Getting away with it.

    It's just a bulk filter capacitor on a supply so no problem, unless you were expecting an excuse to buy a new computer.
  17. KJ6EAD

    Advice identifying type of wire and sheath inside hair-curling tongs

    The lead wires are copper with a sheath made of silicone and fiberglass. The heater wires are one of several alloys of nickel and chromium and are usually wound on a ceramic form and potted in a ceramic cement. You can buy cartridge heaters that may suit your purpose. Try the companies "Watlow"...
  18. KJ6EAD

    Potentiometer Burnout

    My guess, and it's only a guess, is that the I/O lines attached to the wipers were inadvertently changed to outputs in software long enough for a low impedance path to ground or Vcc to create a dead spot in the pot element as Rleo alluded. For this to happen, the wiper would need to be near end...
  19. KJ6EAD

    Is there a way to polish LED after cutting/grinding it

    I don't think fire polishing will work in this case; LEDs are mostly potted in epoxy which will tend to discolor, char, or ablate before the surface liquifies. After wet sanding in stages to 1200 grit, the 3-stage Novus plastic polish system will work similarly to Meguiar's...
  20. KJ6EAD

    Does Your Wiring-Soldering Look Like This?

    That's a fine example of a rosin crystal demodulator circuit (cold solder joints).
Top