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Power Transformer behavior at higher frequencies
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alireza7:
I want to reject both common mode and differential mode signals

For this purpose i designed a circuit like this:



Vout goes to a switching power supply

Do you think this circuit will pass surge and burst and conducted RF tests?

If you don't know what are surge and burst and conducted RF see this website:

T3sl4co1l:

--- Quote from: alireza7 on January 07, 2019, 02:10:42 pm ---I want to reject both common mode and differential mode signals

--- End quote ---

Again, if you do not have a meaningful spec, you cannot possibly hope for a meaningful answer.

Taking the above statement at face value, the best rejection of both common mode and differential mode signals is to short the input of whatever this connects to.  That way all signals -- transients, noise, and mains voltage -- are rejected about as well as can be (>120dB, if a little shielding is provided?).

Tim
alireza7:

--- Quote from: T3sl4co1l on January 07, 2019, 03:42:32 pm ---
--- Quote from: alireza7 on January 07, 2019, 02:10:42 pm ---I want to reject both common mode and differential mode signals

--- End quote ---

Again, if you do not have a meaningful spec, you cannot possibly hope for a meaningful answer.

Taking the above statement at face value, the best rejection of both common mode and differential mode signals is to short the input of whatever this connects to.  That way all signals -- transients, noise, and mains voltage -- are rejected about as well as can be (>120dB, if a little shielding is provided?).

 
Tim

--- End quote ---



I read a lot about EMC(surge,burst,...) but my goal is just to designed a protection circuit in order to prevent any  MCU reset or malfunctioning in secondary circuit (which contains micro-controller and analog circuit) ,when we apply burst and surge signals . So unfortunately i don't have any sense to numbers and required specs.


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