Stereo 6.3 mm Jack connector with switch

[Nomical]

Hi,

I'm looking for a stereo 6.3 mm jack connector which has a switch built inside that is open-circuited when something is inserted. Is this one any good?

Just incase it needs a cookie or whatever and the url doesn't link:

Riechelt #: EBS 63P

Klinkenbuchse, 6,3mm Stereo, Print mit Schaltk.

If it's not the right one, where can i get it besides Farnell?

And is a Buchsenleiste, 10-polig, einreihig, H: 5,5mm, ger. the same thing as a female SIL connector (with 10 pins)? It is, right?

[Nomical]

I also need a (toriodal) transformer. I don't like walladapters, so i want to put the transformers inside the casing and toriodal transformers produce little heat, are easy and small. The one that's was proposed to me was a toriodal (ringkern) tranformer with two windings of 12V and it was 20VA.

I can't find one on the Reichelt site that matches this one, could i also use this one Ringkerntrafo, Print, 25 VA, 2x 15 V, 832 mA or would this one Ringkerntrafo, Print, 25 VA, 2x 12 V, 1041 mA be the better choice?

Would a 12V winding be enough to power a 12V analog circuit? I thought i remembered reading on this forum about a loss in power for some reason meaning that if you need 12V you should power it with 15V. I'm not sure about this and could have read and misinterpreted completely. Any info on this one?

I also want to power the MBHP modules with a toriodal transformer. But do toriodal transformers with only one winding exist? Because i only need one winding right?

Could i simply not use the second winding of a transformer?

And what should the specifications be for such a transformer to power the modules? 9V, 500mA?

Cheers,

C.