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  1. mixos1

    Having problems uploading pic's.

    Testing.. Now seems ok, please report any other problem in future. Thanks
  2. mixos1

    Our Site Doesn't Open

    I apologize for any access errors during the last 24-48 hours. This is due to server switch procedure. We moved on a new server hopping to solve the long delays of the past. Please report any access or performance problems. Thanks for your patient :)
  3. mixos1

    Posting Instructions

    Click on help button on the top menu or click here: http://www.electronics-lab.com/forum/YaBBHelp/index.html and then navigate to "Posting"
  4. mixos1

    Upload error!

    Ok, corrected. Now seems ok. Please try again and report results.
  5. mixos1

    Upload error!

    testing [attachment deleted by admin]
  6. mixos1

    MOVED: LED

    http://www.electronics-lab.com/forum/index.php?board=15;action=display;threadid=2614
  7. mixos1

    File types and sizes.

    Max file size increased to 5000KB but i don't think Ante became happy ??? There is a limit on the HD space so it can't be increased too much. Also rar files are allowed from now on. For such a large files (60MB) i suggest you to open a free hosting account (ex geocities or similar) and post...
  8. mixos1

    Pages take forever to load?

    How it is going now? Please post feedback.
  9. mixos1

    Use a battery while charging it.

    I came across bq24100 datasheet and i thought it may interests you. This is a Li-Ion switchmode charge management IC. Take a look here: http://focus.ti.com/docs/prod/folders/print/bq24100.html In page 25 of datasheet there is circuit using bq24100 that charges the battery while powering the...
  10. mixos1

    [ARTICLE] How to rebuild a Li-Ion battery pack

    New article added: >> How to rebuild a Li-Ion battery pack >>PDF version download Comments, suggestions welcome ;)
  11. mixos1

    Making an electric furnace.

    Take a look at this article from Circuit Cellar, may help you. Lacoste-168.pdf
  12. mixos1

    How to tell if an old electrolytic cap is good

    As electrolytic capacitors getting old their ESR (Equivalent Series Resistor) is rising and that may or not cause problem to your circuit. You can measure ESR using special ESR meters (Elektor has published one before) or using low resistance meters. An alternative method if you don't like any...
  13. mixos1

    Use a battery while charging it.

    First of all you must define the type of the battery you want to use. It will be NiCd, NiMH, Li-Ion or another?
  14. mixos1

    APC BACK-UPS transformer

    Inplug it from the rest of the circuit and mark the side used as secondary (the side that goes to outlet and gives 220VAC). Then with a multimeter measure across the terminals of each side to find the two separate coils (use contiunity tester). Your transformer will look like the one in the...
  15. mixos1

    APC BACK-UPS transformer

    Hello :D This is the main power transformer that steps up the low AC voltage to a higher level AC volatge (110VAC or 220VAC). This has usually a ratio 1:10 between primary and secondary windings and can be used also as a step down tranformer if you use it in reverse. How many terminals can...
  16. mixos1

    TDA7000 - FM Radio

    You may try http://www.futurlec.com it's a good and cheap electronics eshop or http://www.ampslab.com/trans_tda7000.htm Also check Google Results on TDA7000
  17. mixos1

    TDA7000 - FM Radio

    Here it is. Enjoy it! TDA7000.pdf
  18. mixos1

    Chip Identity?

    Nice links MP :) Added here: http://www.electronics-lab.com/links/?c=136 in parent category and subcategories.
  19. mixos1

    APC BACK-UPS transformer

    Please provide us more information so we can help you. You can attach the service manual, a photo or enything else you think can help.
  20. mixos1

    suitable Replacement for transistor

    Hello umdengineer08 Suitable transistor to 2N3643 are: MPSA06 2N4401 PN3643 Hope you find one of them to finish your project :). Don't forget to tell as your expiriences building your circuit :D
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