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Microwave oven

Microwave trap

juanrivarola
hace 5 años
hace 5 años
Hello colleagues, I hope you can help me with a microwave transformer to know what condition it is in, since I did the primary, secondary and high voltage winding measurement tests. Performing the measurements in the primary I do not find any problem gives me a value of 3 ohms and measuring the chassis is fine, I measure the secondary and also has no problems it gives me a lower resistance of 0.9 ohms and measuring the chassis is fine. The question I have is in the measurement of the high voltage coil because I have noticed several tutorials and the approximate value is between 50 to 150 ohms, in some of the measurements they give a value of 180 to 190 ohms with the transformer being in good condition. terms. In my case in the high voltage coil and the chassis I have a value of 220 ohms and my question is whether this value could be considered as normal in some cases or uncommon? Can this happen depending on the size of the transformer or the manufacturer? (I have noticed that the winding is much finer). Can this transformer be wrong? since in the other windings they do not present any fault. I await some response. Thank you
celentauro
celentauro
3.878
hace 5 años

You have already published the topic 2 times, you have to be patient and wait for someone to know the answer.

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juanrivarola
hace 5 años

Yes. My phone is published twice and I don't know why. Only for that.

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luis38
luis38
95.432
hace 5 años
hace 5 años
Dear, the ohms values of the coils serve as references, but they are not absolute. To get out of the doubt, do a dynamic test, which consists of connecting the 220 / 110VAC to the secondary and if the traffic is good, you must obtain an alternating voltage of 12 to 20 volts in the primary. regards
juanrivarola
hace 5 años

I have done the test and they give me those values And also with the neon bulb so the transformer has no fault.

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tecnico54
tecnico54
22.006
hace 5 años
hace 5 años
check this video for a dynamic test
juanrivarola
hace 5 años

With this video it helped me a lot.

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