Tetrikus wrote: ↑
Thu Aug 16, 2018 9:14 am
Brandon92 wrote: ↑
Tue Aug 14, 2018 11:42 am
You could add EMI/EMC
to the input of your ac dimmer. For example this one
**. And for the output you could use this
Will try that. But actually, I'd like to know, where exactly the problems occour. I think it's quite realistic, that these issues come from the dimmer, but is there any way to be really sure
, without the need to buy an expensive oscillator?
This is a "simple" question. However the answer is not quite simple. But, I will try to give you some information about this.
Because your AC dimmer is "cheap" it doesn't contain the right filters to get rit of cictain noise. That can course some issues elsewhere. For example, if you want to bring this product onto the marked with the prober certification. It will not past the test.
The follow image is form here
. Also interesting btw.
As you perhaps will see that there are some spikes when the triac is "enabled". This kind of spikes are very fast and contains therefore "a lot of energy" (not 100% correct, but you get the point
) Because there are fast, there are high frequentie and can course problems elsewhere, as you notes before. And by using a correct filter, the spikes are "limited" and/or "damped". If the spike is not filtered out, this will be transmitted by the wires that are connected to it.
To give you a idea about the filter, here
is a "similar" schematic with a filter at the input.
Depending on the frequentie, you could try a fm radio near this board, if you are "lucky" the fm signal is gone if you enable the dimmer.
I do not completely understand what you want to say/ask, sorry. Well, I can say, that I'm using this dimmer:
The dimmer that are using is, by the looks of it, a dimmer that contains the algorithm to correctly enable / disable the traic's. And if that's was not the cause, you could blow up the dimmer.