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Post by dummyload on Mar 19, 2016 10:42:57 GMT -5
It is not the ground that is bad it's high noise level created by pcf ,smps and smps2 that the probe cable picks up combined with higher sensivity input scoop (500mv) , what you see on the +pole is not always real in the signal.
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Post by dummyload on Mar 19, 2016 10:44:45 GMT -5
DON USE randaarde you will short the power supply!!!!!!!!!!!
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Post by radiohead314 on Mar 19, 2016 11:06:02 GMT -5
DON USE randaarde you will short the power supply!!!!!!!!!!! Yes I know that is allways dangerous when measuring on powersupplies primary sides. |
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Post by radiohead314 on Mar 19, 2016 11:08:09 GMT -5
It is not the ground that is bad it's high noise level created by pcf ,smps and smps2 that the probe cable picks up combined with higher sensivity input scoop (500mv) , what you see on the +pole is not always real in the signal.
Ok so it is generated in the cable. That explains it. I measured c125 to be the same so I conclude I do not need new caps there. |
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Post by dummyload on Mar 19, 2016 12:39:52 GMT -5
Measuring is not always as easy as it looks ,you already learned about that trying to measure the videochain (rf) to.
Can you trust wat you are seeing.
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Post by radiohead314 on Mar 19, 2016 12:51:30 GMT -5
Measuring is not always as easy as it looks ,you already learned about that trying to measure the videochain (rf) to. Can you trust wat you are seeing. Yes those measurements where pretty much wrong. I am going to continue that next. I even have a fet probe but I am not sure the probe is right perhaps needs some calibration done. |
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