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230V Snubber

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Simonv92:
Hi All!
I have a Weller PUD81 solder station, everytime I switch it off I can hear a powerful "bump" in my pc speakers. To solve that problem I want to put in parallel to the Weller switch a snubber.
I need some help about R and C values. The Transformer inside is 95W.
Thanks all!
Simone

Vovk_Z:
I can't say exact values but you can start with 470 R (1-2 W) and 0.047-0.1 uF X2-type cap.
I think loud bump mean bad design of your PC speaker power supply too.

Simonv92:
Thank you for your reply, I’ll do some test... the speaker psu is a toroidal transformer with a rectifier bridge and some capacitor... I don’t have an EMI filter on the AC line, maybe this can be the problem...

trobbins:
Try using a different AC mains socket for the soldering iron.

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