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  1. Sukhbinder

    Is bluetooth safe?

    A point worth  thinking is that they say that cell phone radiation is harmfull for health (still a debatable topic) but what about bluetooth technology. they are advertiseing for use of bluetooth accesories like headsets for phones but do you know that bluetooth uses the spectrum of 2.4Ghz...
  2. Sukhbinder

    difference b/w high frequency & transformer based inverters

    what is the difference between a high frequency and a transfomer based inverter. i read some where that transformer based systems have a load surge capacity of upto 200% but a high frequency system cannot exceed its surge capacity specified. i know  that by using a high frequency allows the use...
  3. Sukhbinder

    power on reset for digital circuits

    H there all of u! i need a circuit to perform a power on reset for digital ics. i need something that is small ans simple using only simple discreet components like resistors,capacitors and transistor. no special ics please. the ic is a better choice but procuring it for me is a bit tricky here...
  4. Sukhbinder

    TIL 31A datasheet

    Any one having the datasheet for the TIL 31A phototransistor from texas instruments. thanks ;)
  5. Sukhbinder

    Nokia 3650 & 6230i service manual

    need a nokia 3650 and 6230i service manual ;)
  6. Sukhbinder

    finding the capacity of NiCd or NiMH cells?

    Hi guys can any one tell me a way to find the current capacity for NiCd or NiMH cells. Usually its written on the cell itself but if u need to replace an internal customised cell , how do u do it. i have a black and decker 2.4V cordless screwdriver. the problem is that we donot have a...
  7. Sukhbinder

    need help with transistor 502

    i'm having some problems with my sony NiMH charger. the charger has a TO-220 package transistor with the number 502 on it. i cannot find out if it is a BJT or a MOSFET. its a fairchild  make i think but could not find anything on the fairchild website. can any one help me with this and get me...
  8. Sukhbinder

    UV currency checker/exposure unit

    i need the layout for a UV currency checker or a lithography UV exposure unit. We require a UV exposure unit for exposing resist coated PCBS at our university. We had a mercury lamp earlier but it was too slow (took 1.5 hrs for correct exposure) we changed the lamp by the supplier gave us a sun...
  9. Sukhbinder

    Magnetic Induction charged Torch

    Hi guys, i just saw on the net at http://cgi.ebay.co.uk/Induction-Charged-LED-Torch-No-Batteries-Ever-NEW_W0QQitemZ8730468431QQcategoryZ117110QQcmdZViewItem a LED torch which used no batteries. I've seen such devices earlier also , they shake the torch to charge it up and it work for 15-20mins...
  10. Sukhbinder

    Timer circuit using CD4060

    hi guys, i just opened up a uniross photosprint battery charger which has 2 timer settings of 6 & 9  hrs. i found that they used a CD4060 for the timing. The CD4060 is a 14 stage ripple counter. Can any one suggest any circuit for a timer using this IC. I'm planning to make my own battery...
  11. Sukhbinder

    Schematic and Service Manual for Philips PM3206 15 MHz Oscilloscope

    Hi, Need Schematic and Service Manual for Philips PM3206 15 MHz Dual Oscilloscope, found one at the junk dealer, works fine, just need to check out its calibration and timing setting. Can any one help me out. Mine is a 240V version. Thanks ;)
  12. Sukhbinder

    Need service manual for Philips FW335 mini HiFi

    I just got a philips FW335 mini HiFi set from my cousin for repairs ( which i do as a hobby). The main power amp IC was blown to such an extent that i could not even get the number. can any one help me out with the IC number and its data sheet (i need to see why it blew up!) if anyone has its...
  13. Sukhbinder

    Need data sheet for JFET BFW10,BFW11

    Need data sheet for JFET BFW10,BFW11 thanx ;)
  14. Sukhbinder

    need schematic and service manual for sony MHC-RV22

    need schematic and manual for a sony MHC-RV22 mini HiFi component system. thanx
  15. Sukhbinder

    datasheet for HA1392 needed

    I'm looking for the datasheet of HA1392 audio amp ic from hitachi. thnx ;)
  16. Sukhbinder

    need uPC1230H datasheet

    need datasheet for uPC1230H from NEC. thax :)
  17. Sukhbinder

    Need Schematic for Technics SA-370S Deck & Receiver

    I need the schematoc for this old model Technics deck & receiver. The model number is SA-370S. TNX.
  18. Sukhbinder

    MOSFET amp. help

    can any one tell me the advantages and disadvantages of MOSFET based amplifiers. now days a lot of products are in the market which r having MOSFET amps. some say that Mosfets get damaged easily and recommend IGBJTs. can any one help out with my query. :D
  19. Sukhbinder

    datasheet for EA1010 graphic equaliser IC

    i'm looking for the datasheet of EA1010 graphic equaliser IC. i found the ic in a Hitachi stereo component system. i can neither find the IC or its datasheet. can any one help me out. if u have any other grahic equaliser IC for stereo use in mind, pls. tell me.
  20. Sukhbinder

    datasheet request for UM91214/91215

    i need the datasheet for the UM91214/91215 DTMF dialer IC. If any one has it or has links to it, please help me out :D
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