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  1. Tha fios agaibh

    Incident with a motor pump

    The real problem is why the motor cable was laying on the ground where someone could trip on it. It also should have been properly secured where the ends of the cable wouldn't rip out by someone's foot. John
  2. Tha fios agaibh

    Incident with a motor pump

    Inverse time circuit breakers are sized from 150% to 300% of the motors full load current. (Usually 250%) here in the States anyway. Instantaneous breakers are sized even higher. So the breaker did not have a chance to see the current at levels where it would trip. Low peak Fuses are preferred...
  3. Tha fios agaibh

    Panasonic VCR Issues (Model AG-7330)

    Untested is Ebay code for broken piece of junk. Sounds like it doesn't like the movement of the take up reel. Possibly a mechanical problem like a bad belt or flat spot on a roller, or somekind of feedback problem like an encoder. Honestly, its obsolete and not really worth fixing. If your...
  4. Tha fios agaibh

    Scary...

    Very true, although there are couple things that can be checked. One is using a thermal camera with circuits under load, and the other is performing an insulation test with a megger. Beyond that you are right. Who knows whats lurking behind the walls. A practice I don't like, is people relying...
  5. Tha fios agaibh

    Scary...

    Don't forget premises wiring. Just because someone can pull wire and make the lights go on, doesn't mean its done safely. If someone unqualified wants to mess with the electronics in their stereo, they might zap themselves or blow a fuse. But if someone chooses to rewire their house because...
  6. Tha fios agaibh

    Scary...

    I believe the person replying to such a dangerous thread deserves to be admonished more so than the op. Another thing that's sort of frustrating, is when someone solicits help here, and then never responds. I find that quite rude.
  7. Tha fios agaibh

    Scary...

    I still wouldn't say that's bravery, I'd say that's being an accomplice to stupidity.
  8. Tha fios agaibh

    Vacation

    Enjoy
  9. Tha fios agaibh

    Scary...

    I wouldn't say that we are brave souls, rather aficionados with time to kill. My love of electricity may be exploited by someone too lazy to do their own basic research, but only because I enjoy taking about it. I hear you though. How many hours of discussion have been donated for something like...
  10. Tha fios agaibh

    Rapid Fire Mouse

    I take my keyboards apart savagely.
  11. Tha fios agaibh

    Rapid Fire Mouse

    One thing that also might be of interest is a foot switch that can mimic the keys on a keyboard. Most games have shortcut keys that performs functions of the game (like reload) Keyboards are quite cheap and can be savaged to get the usb control board and manipulate it do do a specific function...
  12. Tha fios agaibh

    I have Windows Vista with no driver help?

    I have a pc with Vista that still works pretty good (little slow) but I rarely go online with it. I use it as a media center. If there is nothing that you want saved from that computer, you could also restore it to factory condition, or use restore point to restore to a earlier date when it was...
  13. Tha fios agaibh

    I have Windows Vista with no driver help?

    I believe Vista is now considered obsolete because updates have not been available for some time. If this is pc is on the internet its likely dogged with malware and viruses that make it troublesome. I would not trust banking info or anything important to be stored on it. It'd be a good time to...
  14. Tha fios agaibh

    I have Windows Vista with no driver help?

    As Martin said, press and hold the F8 key(usually) while the computer boots up. The screen will be black at first, and as soon as it says "starting windows" push F8. Another great tool to use is selective startup...
  15. Tha fios agaibh

    I have Windows Vista with no driver help?

    Try booting into safe mode and see if you can diagnose the problem from there.
  16. Tha fios agaibh

    Charging Batteries using a Power Supply

    Thanks but that doesn't really answer my question. That would be the maximum charge rate that the battery would draw when it's charge is depleted. As the voltage comes up during the charge the current should drop. So as it nears the end of the charge, the voltage will be around 15v and the...
  17. Tha fios agaibh

    Charging Batteries using a Power Supply

    So if 1.75a is recommended, does that mean the charge rate is C/4? If so, why so different than the C/10 rate that's normally used?
  18. Tha fios agaibh

    DC motor undervoltage (continued)

    Thanks Minder, your "generated voltage" Explanation of EMF makes it easy to understand.
  19. Tha fios agaibh

    DC motor undervoltage (continued)

    So if voltage goes down with the same load applied, the current goes up. Right? I realize something like a DC fan motor without much of a load would draw less current because less power would be used. Thanks Martin, that's as I expected. Obviously a stalled motor would do so but I'm talking...
  20. Tha fios agaibh

    DC motor undervoltage (continued)

    Chris got me thinking about motors in another post I agree that a DC motor will draw less current with less voltage especially without a significant load on it. But if the voltage and current go down, so does the power and the amount of torque developed. If the torque demanded of the motor...
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