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Calculating Output Voltage of Transformer with Non-Ferromagnetic Core and Given εr

45 7
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  • #1 21670714
    Sajed Rakhshani
    Anonymous  
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  • #2 21670715
    manikanta Nr
    Anonymous  
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  • #3 21670716
    Sajed Rakhshani
    Anonymous  
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  • #4 21670717
    Frank Bushnell
    Anonymous  
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  • #5 21670718
    Sajed Rakhshani
    Anonymous  
  • #6 21670719
    Frank Bushnell
    Anonymous  
  • #7 21670720
    Sajed Rakhshani
    Anonymous  
  • #8 21670721
    David Figueroa
    Anonymous  

Topic summary

The discussion addresses calculating the output voltage of a transformer with a non-ferromagnetic core characterized by a given relative permittivity (εr). The primary and secondary windings have equal turns (n), with an input voltage around 5 V peak-to-peak and operating frequency approximately 45 MHz. Standard transformer voltage ratio formulas (Vout/Vin = Nsecondary/Nprimary) apply ideally, but due to the non-ferromagnetic core (e.g., water solution in glass) and high frequency, significant leakage flux and reduced electromagnetic coupling occur. This results in the secondary EMF being lower than the ideal ratio predicts. The transformer is cylindrical with a 2 cm radius core and copper wire windings of 0.5 mm radius spaced 1 mm apart. Efficiency is less than 100%, and the output voltage is consequently lower than the simple turns ratio calculation. Additional details such as core material properties and construction affect the output voltage, especially at high frequencies and with unconventional core materials like water solutions used for specialized applications such as densitometry.
Summary generated by the language model.
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