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Showing content with the highest reputation since 07/27/2015 in all areas

  1. 2 points
    malique

    LM3914 pspice library

    Does anyone has LM3914 pspice library? i desperately need it..pleeeeease!
  2. 2 points
    Illegal content (ebook/magazines/software) will be deleted without any notice. Thanks
  3. 2 points
    tjolle62

    Overload Protector A16 ???

    In a few circuit diagrams i have they refer to a what seems to me is a transistor with B C E as a overload protector and with number A16 and i have looked for a few hours on the net and i can't find anything on this little fellow, Anyone knows what I'm looking for and wanna share that info Please .... Come on !! 48 visits !! some one must know what it is !!! PNP is it also...........
  4. 2 points
    tjolle62

    Overload Protector A16 ???

    At last i got a theori from a totally different place and he wasn't shure either but he had a weak memory that it could be 1A16 and a PNP transistor but after several deep searches on the I-net it didn't make any kind of senses whatsoever ???
  5. 2 points
    MP

    Car battery to parallel port

    When you use your resistive divider to drop the voltage down to 5 volts, you just need to select values of resistors to limit the current. This is basic ohm's law. V/R. Was this your question or did I misunderstand? I am not sure how you intend to monitor status by using one 5 volt pin. As an interface to the parallel port, you could use an LM3914. This would give you the resolution you need. There are also many other ways to proceed. You need to convert from analog to digital to read anything useful from the parallel port. MP
  6. 2 points
    Omni

    Car battery to parallel port

    Hi TJBraza, http://www.analog.com/UploadedFiles/Data_Sheets/ADT7485A.pdf Although, it will probably require a small program written in C or Visual basic to convert the string MSB & LSB into a more easier read etc... Take a moment and review the data sheet, the IC has a lot of potential.
  7. 2 points
    alanng96

    SL100 & SK100 transistor

    I can't find SL100 & SK100 transistor :'( Which transistors can replace these? Thank you for your help~ ;)
  8. 2 points
    Calm down people. It is not Mixos's fault, if it is against the law he has to remove the content. This site is very good for asking electronic related questions, I have yet to find a better one.
  9. 1 point
    GOKAR

    An Ultrasonic Cleaner--Schematic

    Looking for an Ultrasonic Cleaner schematic. Gokar
  10. 1 point
    vin_killah

    STK407-070B Datasheet

    Hi, where can I find datasheet of STK407-070B? I just want to make a home made amplifier. thanks :D
  11. 1 point
    Hero999

    negative ioniser

    The same basic blocking oscillator circuit, normally used to drive a flyback transformer, can also drive a centre tapped or dual primary mains transformer. Here's an example of a capacitor charger using a mains transformer with a centre tapped primary. It should be able to drive a voltage multiplier circuit.                     C1 1 uF                   D2 1N4948   R2                 +------||------+        T1    1.2kV PRV  1K 1W                 |              |           +-----|>|-----/\/\---+------o +                 | R1 4.7K, 1W  |   red  ||( blk                 |                 +-----/\/\-----+------+ ||(                     |                 |                  yel )||(                   +_|_ C2  + o----------------------------------+ ||(                    --- 300 uF                 |                  red )||(                   - |  450 V                 |      +--------------+ ||(                     |                 |  Q1  |                ||( blk                 | 6 to 12         |    |/ C                  +--------------------+------o - VDC, 2A         +----|    2N3055    Stancor P-6134             D1 _|_   |\ E           117 V Primary (blk-blk)         1N4007 /_\     |            6.3 VCT Secondary (red-yel-red)                 |      |  - o------------+------+ http://www.repairfaq.org/sam/samschem.htm#schssi
  12. 1 point
    eplanet

    2n2222 resistor value

    thanks hero999 is there any formula for this issue? my coil is 57ohm
  13. 1 point
    ptkindt

    Tesla with A811 tube

    I made a Tesla transformer with a A811 tube. I did not force anything, it can run for hours. The making of: http://www.youtube.com/watch?v=H7nivw7zxNM The result: http://www.youtube.com/watch?v=Mp721VgxWQI
  14. 1 point
    Mhavskie

    My ZVS Flyback Driver with pcb

    This is my ZVS Flyback driver with pcb/desinged. It is very simple. ZVS Flyback Driver ;D <Y> ./'\.
  15. 1 point
    audioguru

    diy 2.1 pc speaker

    The TDA2003 does not bridge well because the output offset voltage are not matched for the two amplifiers like a monolithic bridged amplifier IC. But you might be lucky so try it. With a 14.4V supply the bridged output at clipping into 4 ohms is 14 watts. If your speakers are 8 ohms then the power is 8 Watts. If the supply voltage is less than 14.4V then the power is less. You should make an active crossover circuit.
  16. 1 point
    gogo2520

    Electronic suplus stores

    Hello RFamateur and welcome to the form. Here are a few. These have stuff some good lot outdated. http://www.goldmine-elec.com/default.htm http://unicornelectronics.com/prod.htm http://www.mpja.com/category/LEDs/LEDs.asp http://www.futurlec.com/index.shtml http://www.allelectronics.com/ http://www.danssmallpartsandkits.net/ http://www.alltronics.com/assortments.htm These are good suppliers http://www.mouser.com/index.cfm?handler=home http://www.futureelectronics.com/en/Pages/index.aspx http://www.web-tronics.com/ http://www.jameco.com/webapp/wcs/stores/servlet/StoreCatalogDisplay?storeId=10001&catalogId=10001&langId=-1 That should get you going. gogo
  17. 1 point
    Hero999

    Overload Protector A16 ???

    It could be used as a switch, amplifier or (as you've said) part of a current limiting circuit. Bipolar transistors have so many applications that it's impossible to tell you what it's doing from what you've said. For example if I asked you "I've seen a flat head screw; what's it holding together?", how could you know the answer? If you post a picture I might be able to tell you but even then the only way is to post a schematic.
  18. 1 point
    audioguru

    Electronic Gun !!!!!!!!!

    Hi Shantanu, Electrolytic capacitors have a vent on top to slowly release gasses that build up when the capacitor is connected with backwards polarity then has a high current. With a very high current, the vent cannot release the gasses slowly so the capacitor explodes. A 9V battery cannot provide a very high current. Maybe a battery made with series-connected AA Ni-Cad or Ni-MH cells would provide enough current for a backwards electrolytic capacitor to explode. Bad-smelling "fluff" comes out.
  19. 1 point
    after removing of ebook files, the page is not visited so much and not updated messages as before...
  20. 1 point
    I am very sad too :-[ [move] :'( :-[ :-\ :'( :-[[/move] No doubt, ER has been the one of most attractive features of the site. All the thanks and respect goes to Mr. Ante for such a good contribution to this part of site. I now request MIXOS to leave the contents as it is not reasonable to throw away ones friends(books).
  21. 1 point
    For the Mechanical one just go to the Junk Yard and get a Dimmer out of any car you like. for the others you can do a couple of things. Get a standard touch lamp from the store and remove the touch circuit and hook it up to the input of the transformer. or Copy the circuit with Reverse Engineering. Then hook it up to your Transformer plug side. Here are some circuits if you want to tinker. http://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#dimmer.gif http://ourworld.compuserve.com/homepages/Bill_Bowden/page8.htm#touch.gif
  22. 1 point
    ante

    PWM using 555 timer

    Darrin, Can this help you? Ante ::)
  23. 1 point
  24. 1 point
    juanpmoron

    0-30 Vdc Stabilized Power Supply

    R16 is 1K and is OK ???
  25. 1 point
    MP

    0-30 Vdc Stabilized Power Supply

    Think of the commas as periods or the periods as commas. These are used differently in different continents. It means the same. MP