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In the Forum: Melquiades Amplifier
In the Thread: Planning my DSET
Post Subject: EM Shielding, do or don't?Posted by anthony on: 4/23/2017
 anthony wrote:
...you've got me thinking about this now.  I'll talk to some people here and see what they think, but it should be easy enough to place a shield between the OPT's and the tube bases.

Thanks for bringing it up.  I am looking for other angles to view the design, and yourself and Jarek have been very helpful.



I've talked to my advisers here about the potential EM induction at the tube sockets from the various OPT's situated beneath.  It is not easy to see on the sketches, but absolute minimum separations are 60mm for the smaller, high frequency OPT's and 75mm for the huge Bass OPT.  Basically, because the voltages are relatively low at about 200VDC those minimum separations are expected to be "plenty".  

If this was a 211 amp with 1800V on the plate then there would definitely be an issue even at 40cm...shielding would be essential.

So I am going to go without shielding in those locations for now.  If I have problems then I should be able to retrofit something, but fingers crossed that will not need to happen.

Thanks for bringing it up guys.

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