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  1. K

    About file uploading

    Test..test..test The first image is with Copy/Past in Firefox 39/Windows7 Pro But didn't work. the second (Monostables) was with "Choose files"
  2. K

    Timing control AC voltage to Spot Welder ??

    http://www.5bears.com/welder.htm is one. Mine: http://metalworking.com/Dropbox/_2001_retired_files Look down the list for five "Miller Time" files Ken
  3. K

    Need some interesting usage of electronics in agriculture

    One of the most amazing uses of electronics in farming to me is the real-time control of fertilizer delivery and planting based on variations of soil conditions and GPS location over a field. Ken
  4. K

    bike fuel indicator

    Pandit, Simple resistance/conductance detector circuits for water do not work with hydrocarbon fuels. The these liquids are not conductive. Ken
  5. K

    120V shorted out, why did the lights get brighter?

    mbalegria, Your question has nothing to do with this thread.  You should start your own thread with an appropriate title to get helpful responses. Ken
  6. K

    120V shorted out, why did the lights get brighter?

    Because you needed to ask, and because I have no idea of your service entrance box configuration, I strongly recommend that you have an electrician do the check and any repairs. Ken
  7. K

    120V shorted out, why did the lights get brighter?

    That is a symptom. What's the voltage at the two circuits in the circuit breaker box entrance. You need to have an electrician check all the connections at the service entrance and circuit breaker box. Ken
  8. K

    120V shorted out, why did the lights get brighter?

    Likely, you have less than good neutral connection at the service entrance box or the utilitie's transformer. In the US the service supply is from a 220vac center-tapped transformer. Half the circuits in a house are supplied 120VAC from neutral to one end of the transformer's secondary, and the...
  9. K

    Solenoid driver circuit

    How about showing us what you're doing...schematic?...voltages?...frequencies?...component ratings? ????? Ken
  10. K

    Voice record/playback design help

    Check these segment addressable recorder/playback chips: http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ConsumerElectronicsIC/ISDVoiceIC/ISDChipCorder/Pages/default.aspx Ken
  11. K

    high precise Temperature sensor

    And even if you can assemble a circuit with a resolution of 0.001
  12. K

    high precise Temperature sensor

    Not only would the sensors be expensive, but the electronics with enough resolution "and" stability will be incredibly pricey. :( Ken
  13. K

    high precise Temperature sensor

    So resolution of 0.001
  14. K

    EICO Model 1050 charger - parts & diagram's

    Schematic, free: http://www.nostalgickitscentral.com/eico/schematics/eico_schematic_1050.pdf Manual, on ebay: http://shop.ebay.com/items/EICO%201050%20manual Ken
  15. K

    e2u10

    Have you Googled: e square u10 chip u10 sounds like a 'schematic drawing label' for an integrated circuit chip, not the chip manufacturer's number.  From my Google-ing it looks like "e squared" may be a double-e prom...electrically erasable programmable read-only memory chip.  Do you have...
  16. K

    reading 30kV dc in a 30 V dc voltmeter

    Something like this: http://www.fluke.com/fluke/usen/accessories/high-voltage-probes/80k-40.htm?PID=55357 Google: HV probe Ken
  17. K

    Thesis

    For you, the one you are most competent to complete. Your question lacks the details about your interests and training. Other wise Google: Final year electronics project FYP Ken
  18. K

    [SOLVED] Is there a way to increase the breakdown voltage of a zener diode?

    http://www.national.com/ds/LM/LM431.pdf Ken
  19. K

    Light bulbs

    It looks like it was for a 100W bulb. It was just a general example of how someone used voltage and current measurements to determine the filament's resistance over a range of operating voltages.  And how the graphed data would look...if the OP tried it. ken
  20. K

    Light bulbs

    To show you what to expect using Herman's advice, here are a couple of graphs I picked up in the net sometime ago.  Sorry I can't credit the author. Ken
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