hey i was wondering, do you have the video on the resonant frequency's vs transformers?, on how they can make it better etc, i looked through your other videos and did not see it. you were talking about it 19:00. I would love to see that video explaining on how it works.
Hi Bob, this is a little off-topic but I am a bit confused and wondered if you could throw any light on my issue. I have a 1:1 toroidal transformer and an auto-transformer which I am planning to combine into a single-box variable, isolated 240V supply for my bench. Whilst experimenting with configuration I find that the toroid is very noisy on it's own, or if placed before the variable in circuit: if I reverse the positions, the toroid is almost completely quite up to around 90% output. I know there are many opinions as to whether the chicken or the egg should come first but I am trying to understand why this should occur. The noise is intolerably high to have close to one's ear when working so I guess the variable is going to be first in line but I would like to know if anything else can be done. I have tried an X2 rated capacitor across the input and the output to no effect. There is an NTC resistor across the input so I don't think it's a "surge resonance" being set up, if such a thing exists. Any opinions would be gratefully received, thanks.
hey i was wondering, do you have the video on the resonant frequency's vs transformers?, on how they can make it better etc, i looked through your other videos and did not see it. you were talking about it 19:00. I would love to see that video explaining on how it works.
Hi Bob, this is a little off-topic but I am a bit confused and wondered if you could throw any light on my issue. I have a 1:1 toroidal transformer and an auto-transformer which I am planning to combine into a single-box variable, isolated 240V supply for my bench. Whilst experimenting with configuration I find that the toroid is very noisy on it's own, or if placed before the variable in circuit: if I reverse the positions, the toroid is almost completely quite up to around 90% output. I know there are many opinions as to whether the chicken or the egg should come first but I am trying to understand why this should occur. The noise is intolerably high to have close to one's ear when working so I guess the variable is going to be first in line but I would like to know if anything else can be done. I have tried an X2 rated capacitor across the input and the output to no effect. There is an NTC resistor across the input so I don't think it's a "surge resonance" being set up, if such a thing exists. Any opinions would be gratefully received, thanks.