Transformers and Electric power Ltspice

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ernd59
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Hi, i was looking for the Energy conversion efficiency of my circuit in Ltspice, but i find out that my Transformers is giving me strange power values i mean with K = 1 the P1 should be equel to P2 but in my case P2 is is way too small , i get equality 90% only if get rid of the Flyback diode, can you please help me understand the reason behind this
 
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why is your file saved as a .asc.dox ?
 
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donpacino said:
why is your file saved as a .asc.dox ?
how should i save it? it is a an asc ltspice file delete the the .dox and you should be able to see it
 
ernd59 said:
how should i save it? it is a an asc ltspice file delete the the .dox and you should be able to see it
Can you post a PDF of a screenshot of the circuit and of your analysis?
 
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berkeman said:
Can you post a PDF of a screenshot of the circuit and of your analysis?
ok
 
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  • flyer_medicassist.pdf
    flyer_medicassist.pdf
    1.4 MB · Views: 423
  • LTspice schematic of a flyback-style converter: 2000 V source V3, NMOS switch M1 driven by a pulse source, diode D5 and inductor L1 (100mH) coupled to L2 (1mH) via K1, with a full-wave diode bridge D1 to D4 feeding capacitor C1 (50µ) and load R1 (75). Simulation directive .tran 100 shown.
    Mosfet.PNG
    52.8 KB · Views: 610