hello
i have been looking for wave form that Bob saw when testing his boat anomalies
why im asking is because if this was both diod failure is sould be "elevated" sinewave
or
if this was one diod failure it sould be "elevated" and hi or low part of sinewave
so what exacly was the that?
after watching this video
i think i have got it
so alternator have 3 phases, each is separetly recified but in his case one of the phases rectifier went short so we got elevated sine wave
something like this
but one more thing gets me thinking if the frequency is arround 42.8khz and we want to add some harmoniocs to increase effect we sould multiply this frequency like here, or base frequency is 10.7 and 21.4 and 42.8 are harmonics?
looking at bob puls modulator here i see that this will only put positive pulses on top of dc but what about negatives one? maybe they are not needed?
well i have found few patents similar and there is only one that have only positive pulses on top of dc but rest of them uses both positive and negative pulses on top of dc ....
what you guys think?
cheers from poland
wojsciech
i have been looking for wave form that Bob saw when testing his boat anomalies
why im asking is because if this was both diod failure is sould be "elevated" sinewave
or
if this was one diod failure it sould be "elevated" and hi or low part of sinewave
so what exacly was the that?
after watching this video
i think i have got it
so alternator have 3 phases, each is separetly recified but in his case one of the phases rectifier went short so we got elevated sine wave
something like this
but one more thing gets me thinking if the frequency is arround 42.8khz and we want to add some harmoniocs to increase effect we sould multiply this frequency like here, or base frequency is 10.7 and 21.4 and 42.8 are harmonics?
looking at bob puls modulator here i see that this will only put positive pulses on top of dc but what about negatives one? maybe they are not needed?
well i have found few patents similar and there is only one that have only positive pulses on top of dc but rest of them uses both positive and negative pulses on top of dc ....
what you guys think?
cheers from poland
wojsciech
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