Recent content by JimPhelpsMI

  1. J

    Quick trip into the past:

    Hi, I just checked my junk boxes and ran across a bunch of Zilog Z80s and somebody's 8008. Jim
  2. J

    Amplifying PC speaker.

    Hi, Runes has a good idea there, but don't use the same two pins you would use for a speaker. That's pin 1 to the speaker and pin 4 to +5. That usually shuts your PSU down! Use pin 1 as signal and pin 3 ground (return). Works OK that way and should drive most any amplifier. Good Luck, Jim
  3. J

    I've got some questions about UPS units from APC..

    Hi Mon, There seems to be a misconception in the description of your 1. The first type of UPS runs the AC straight to the output connectors and switches the converter on only when the AC goes out. The second type runs the converter at all times from the same supply that is charging the battery...
  4. J

    Broken CPU pin

    Hi, 478 Processors have a missing pin on two adajacent corners. Look again. You may not have a missing pin. Good Luck, Jim
  5. J

    Stupid question

    Hi, Pata stands for Parallel ATA and is same as IDE. Sata stands for Serial ATA and is an completely different interface. Good Luck, Jim
  6. J

    Creating Network...

    Hi, The Lord is correct as usual. Compare the connectors on a cable. Held the same way a straight thru cables wire colors are lined up the same. Crossed cable wires do not line up the same. Shades of Serial communication of the past. I solved that one with a switch and two leds. When both leds...
  7. J

    Found a free UPS with dead battery

    Hi, I think Dawn is correct about the "Black thing". It reminds me aslo of a "CUP CORE" a torodial wannabe. Cheaper and easier to wind than a toroid. Switching Power Supplies make use of Torodial transformers for efficiency. Jim
  8. J

    Found a free UPS with dead battery

    Hi, If the charger Voltage measured across the battery is same polarity as the battery and about 13.5 to 14.5 volts then the charger is working. If your multimeter can handle up to about 10 amps then it might be worth it to check the charge current. I think he has already established that the...
  9. J

    Speaker plug & temp monitoring freeware

    Hi, It's not so much that the Case Speaker is small and of poor quality, the amplifier is one transistor sending a square wave to the speaker. Only good enough to make a noise. It can be programed to make different beeps, but it's not worth the trouble. Jim
  10. J

    Antec PSU retaining power after shutdown?

    Hi Navid, How many PSUs have you repaired?
  11. J

    Antec PSU retaining power after shutdown?

    Hi, Some PSUs do that. It's residual voltage still stored in the Filter Capacitors. It bleeds off in a few seconds. Jim
  12. J

    Ultimate boot CD!

    Hi, The guy that set Ultimate Boot up set it up that way. Mine always reboots anytime I exit from any function. Jim
  13. J

    Found a free UPS with dead battery

    Hi Nobb, Don't really understand. The computer etc. does not run off the battery when the UPS is plugged in and the AC Power is good. Sounds like it's always running on the battery and the charger can not keep up. UPSs usually use a relay, usuallysolid state, to switch from AC to Batt operation...
  14. J

    Formatting My Book Premium Hard Drive

    Hi, The Lord is correct as usual. The file is Autorun.Inf. It contains an entry "Open= 'the executable to run'". Can contain a lot of other useful commands. For example "Icon='The Icon to show in the Directory'". Search for Autorun for more details. Good Luck, Jim
  15. J

    I'm confused about storing Litium Ion batteries

    Hi, Don't freeze any rechargable battery. Just put them in the refrigerator where it's about 40 degrees F. Self discharge increases with temperature. Keeping them cool reduces the self discharge. They still go down only not quite as fast. Works with any battery. Good Luck, Jim