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  1. M

    Why? Supply pins position differ in Dig & analog IC's

    Hello Mike I realy do so. Once I had PCB's printed from wrong side(acutually flipped). Then I had to solder DIPs at the bottom side. However I got ZIPs on top side with moving the legs at opposite sides. About the matter of IC pins I personally feel: 1. All i/p pins should be grouped togather...
  2. M

    Circuit Diagram requiered

    Hello! I have found a power supply which has some fault, so I need its circuit details. The information written on one of the stickers is: Ericsson                      LZF083 60/2L RB Article Code                  BMJ 141 020/31 R-STATE                          R2A FACTORY                 ...
  3. M

    High Quality electronic sites

    Hello Audio Guru But we can't see all that stuff :-[ :P. Please do something so its accessible to someone else! :-*
  4. M

    A novel circuit uses the adjustment pin of a regulator IC to provide audio ampli

    Here I found a unique audio circuit. http://www.freeinfosociety.com/electronics/schematics/powersupply/usbportpowersupply.pdf
  5. M

    shake light

    Yes my stepper motor whiteout shorting the wires have clearly noticeable steps. I have experienced difficulty in spinning the motor while on. But just shortning the wires has no effect. Ante have you experienced it yourself?
  6. M

    Why? Supply pins position differ in Dig & analog IC's

    Hello! Does some one know why the supply pins in digital IC's are at corner while most OP-amps have them isomewhere in middle of the chip. Is it only due to mechanical construction? Regards!
  7. M

    Local Positioning System (I need some help)

    Hello CPW! My words: Its tooooooo complicated  ;D CPW have you considered this idea! If you can go with RF then use the directional antennas in trilateral configuration. The antennas should receive signal from the car and each should try to track it. Hence from the angle positions of the...
  8. M

    Best of 30 LM3886 Application

    Hello gevv! Thanks a lot for the stuff you are presenting here! You are doing a gret job. Keep it up!!! :D :D ;D Regards
  9. M

    shake light

    Hi Ante! I did it with a bipolar one but the motor spined as easily as before.
  10. M

    need these software

    Hello Smuralisankar ! Just wait a few moments. Luckily this site has got a large number of “thieve”.
  11. M

    emergency

    Salam Fasih How are you! It seems you have 1to4 mx. I don't know what is your exact need as you havn't told one. Where you are using it. However a 2 bit binary counter connected to select inputs should work. counter have to have a pulse from 555. Flip flops can also be configured as counters...
  12. M

    emergency

    Aslam O Alaikum Fasieh For avery simple demo you can use cd4017 decade counter IC with 555.  Also google, you will find many.
  13. M

    power line communication

    Hello! In PLC the power a high pass filter blocks the high voltage at 50/60 Hz. Normaly 60KHz to 250KHz is the band used for comm. Either AM or FM modulation is used to shift the spectrum. Also have a look on LM565 and LM567 IC datasheets.
  14. M

    Difference b/w Electrate and Condensor mikes

    Hello AU! Yes, the replacement isn't electret one. But I wanted to experiment for better sensetivity. Then I want to build this amplifier. Can't ther be some compromise on the voltage requiered? Any suggestions, please!
  15. M

    Difference b/w Electrate and Condensor mikes

    The thing I am considering cond. mike, I think, also has polarity. red & black wires soldered. Which kind of mik bears highest sensitivity? Thanks for Ans!
  16. M

    Difference b/w Electrate and Condensor mikes

    Hello Dear All! I want to know diff b/w an electrate & cond mike. As I replaced elctrate mike in an FM Transmitter Kit with cond, it didn't work. Electrate mike was fulfilling the job successfully earlier. Also which one is more sensetive (If they are diff things)?
  17. M

    Any data about these photosensors

    Hello Cyril B! Here is the link which shows how to hack mouse sensors. I hope it will be usefullhttp://www.boondog.com/tutorials/mouse/mouseHack.htm#Parts
  18. M

    12 V DC to a 220V AC Inverter AMplfier Design

    Soes impractical means immpossible? One more question. In an LC tank often a transfo is used as inductor(antenna on other side). Does this transfo has some rigid inductance or it depends upon the load impedence?
  19. M

    Facing problem in inverter Design

    Why not people use bridge circuit to drive the o/p transformer, so that a centre tapped transformer can be avoided. I am interested in technical reasoning.
  20. M

    12 V DC to a 220V AC Inverter AMplfier Design

    Then what about class-C amplifier? Why it isn't used at power frequencies. After all it has good efficiency!
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