Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by Erasmo0

  1. Erasmo0

    Autotransformer 500 V/A ~

    no ... I had short-circuited the output ... but, if instead the short, had been on the opposite side of the coil, that is, what changed at the input!? 🤔
  2. Erasmo0

    Autotransformer 500 V/A ~

    ah, I thought you were referring to the variac, so the transformer I tested with the 1/2 strength variac during the short had V1 / V2 = 0 V1 / V2 ... but instead at the input of the variac what voltage, was present in that instant !?
  3. Erasmo0

    Autotransformer 500 V/A ~

    Already, he hasn't smoked, only the cable at its exit at the point where the phase touched the neutral, but I immediately disconnected, as if I were the switch; who knows if there is a mathematical formula to be applied to the electronics in these cases, even out of simple curiosity? .. A few...
  4. Erasmo0

    Autotransformer 500 V/A ~

    okay, i used the meter, and rotating slowly i did not notice anything abnormal except a couple of volts, less, however a voltage that was not stable on the DMM (+ - 0.5V AC) but i believe this is regular👍
  5. Erasmo0

    Autotransformer 500 V/A ~

    okay, I'll check it visually ... thanks to both, in case I can use the connected oscilloscope instead of the voltmeter (hand voltmeter or numbers?)🙂
  6. Erasmo0

    Autotransformer 500 V/A ~

    [img https://res.cloudinary.com/engineering-com/image/upload/v1618079514/tips/B70FE911-DE88-4C3B-B1C2-317669B8086F_bahjuf.gif hi, mr ... I would say a small 3.5A x230 V ~ pik-up ... the short was interrupted by me, because I was holding the contact...for scheme,above the link 🙂
  7. Erasmo0

    Autotransformer 500 V/A ~

    Hello,while I was checking another transformer through an autotransformer and some wires in the air I produced a dead short on the output of the autotransformer ... but the thermal switch upstream of the two transformers has not tripped. What tools could I use to check if the first Has the...
See more

Part and Inventory Search

Back
Top