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  1. M

    12V to 19V for Laptop using ptn04050 5V/15V DC/DC converter

    Dear Friends, I have got to power my laptop from a 12V battery. I have a couple of ptn04050 dc/dc converter modules lying around. The converter operates at 5v and boosts it to -15V (adjustable). Could I use it to get 19V? My first  thought is dividing the Battery voltage to 6V using capacitor...
  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

    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
  4. 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!
  5. 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)?
  6. M

    "SEARCH" Facility of the site

    I am much annoyed with the search icon here. I think it better to have none.  As I failed ever to find an article with search I had to put it here You might prove it by typing in search "The Robot Builder's Bonanza" which is in Elect Resources >> Electronic related E-Books. You will get...
  7. M

    Difficulty finding a page within a single thread

    Here goes the description of my problem! I feel problem in accessing a page within a thread. For example if I have to go page 17 of 40 pages thread then I have to follow it sequentially. If any solution could be found then this site will become many folde easier to browse. Thanks.
  8. M

    Projection clock

    Hello Friends! Here is a link to an intresting article, showing procedure to convert ordinary LCD watch into a Wall Clock using light projection http://www.raphnet.net/divers/projection_clock/index_en.php
  9. M

    Electronic related Books CD, available?

    Hello Friends! I want to have all types of electronics related data(especially e-books) in soft form.
  10. M

    Simple but sophisticated lab Power Supply

    YOU can have a very cheap power supply from TI's  Isolated DC/DC Converter IC's Series.  One such chip is PT4310 Series —48V 6-W Low-Profile Dual-Output Isolated DC/DC Converter Its main features include • Dual Complimentary Outputs • Wide Input Voltage: 38 V to 75 V • 1,500 VDC Isolation • 9...
  11. M

    Why electronics-lab takes longer time to appear

    Dears, I have experienced a lot of trouble in visiting electronics-lab site from my dial-up.  I think it nearly takes ten times more time to load a web page than anyother site.  Has someone else also experienced it? Whats the reason? ???
  12. M

    la6541 (7wpv) datasheet / pinout

    I need it!!!
  13. M

    tmm2464ap(toshiba) datasheet

    I want data sheets for these IC's too um91215 hm9209
  14. M

    Common LED as IR Detector

    IRDetectors are much more costly then a green led .However a simple led (eg green or ret or else) can be used as an IR detector. Will somebody tell about its theory. I have not experimented it yet .
  15. M

    89c238 datasheet or pin config

    I have got 89c238 upc (from philips) I haven't got any info about it.plz help me in its data sheet and programming strategy
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