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Recent content by jrd78ep

  1. J

    Power Trip when probing Oscilloscope..

    Tektronix tds2012...let say i don't want to remove the ground..and as per my friend advise use the 1:1 transformer between measurement....do you think it'll work? tHanks a lot.
  2. J

    Power Trip when probing Oscilloscope..

    Hello Guys....just wondering why the power is tripping when i probe osciloscope to measure clock signal output from PWM IC (uc3525)...Thanks in advance.
  3. J

    Inductor or Capacitor? Need help!!!

    Any update from you today Electrobrains??? I had sent u already the mosfet number....thanks
  4. J

    Thermocouple Sensor Design

    Thanks Steve...i'll try to study the ICs first and then do the actual :-)
  5. J

    Cheking PWM on board???

    Thanks guys for sharing your knowledge...and hoping someday i can be at your level...
  6. J

    Inductor or Capacitor? Need help!!!

    The mosfet is L540NS....thanks
  7. J

    Thermocouple Sensor Design

    Thanks for the reply...yes you're right about "triggered" --something like the temp exceeds as normal... Can you please name the ic so i can search it in google and also the microcontroller...Sorry im new in electronics...thanks.
  8. J

    Thermocouple Sensor Design

    Hello Guys…I am making a sensor design using 6 pairs thermocouple as a thermal sensor around the machine. I want the output goes like this…if only 1 over 6 thermocouples triggered a yellow led lit. And if more than 1 thermocouples triggered then a red led lit…Thanks a lot for sharing your ideas…
  9. J

    Inductor or Capacitor? Need help!!!

    Yes you're right...so i drawn the schematic to give better insight...please see attached file....hoping u can share now exact idea....thanks alot.
  10. J

    Cheking PWM on board???

    I am troubleshooting a power supply...i found a PWM IC UC3846...any idea how to confirm that PWM IC or any type of PWM IC is working by onboard by voltage reading? I measured Vcc is ok (15Vdc) and Vref read 5Vdc. Please help...i am in new and enjoying this electronic world. Thank u guys...
  11. J

    Inductor or Capacitor? Need help!!!

    Now i'm getting confuse :-( Please help get a conclusion...since i measured it fuse-open and looks like smd inductor...do i need to replace it? Just to add up..this mosfet source pin is connected to ground. Thanks.
  12. J

    Inductor or Capacitor? Need help!!!

    So you mean varistor also can be labeled "L3" ? thanks for the reply.
  13. J

    Inductor or Capacitor? Need help!!!

    Hello i am new on this forum....i am troubleshooting an intrument...i found a mosfet with inductor (label L3) connects at drain and source...when i check the inductor it is fuse-open (read in Mohms). Wondering if it is really an inductor or not...because it is not normal to me to see inductor at...
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