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Radio Wrangler · 24th Mar 2021, 9:34 am

That's just a mounting clip, not a shield that I see in that datasheet. It doesn't do any shielding, the cores do that themselves by having ferrite round the outside, and the vulnerable part, the gap, buried tight in the middle.

This application is tightly tuned to 15kHz to reject mains frequency components, which it is getting hit with anyway via the waveform of the anode current. The field pick-up should be trivial.

I've not had to mumetal screen pot cores yet in my career. I suspect the VCM163 should be OK without one.

David

24th Mar 2021, 9:34 am	#67
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,894	Re: AVO 163 amp board ~ transformers That's just a mounting clip, not a shield that I see in that datasheet. It doesn't do any shielding, the cores do that themselves by having ferrite round the outside, and the vulnerable part, the gap, buried tight in the middle. This application is tightly tuned to 15kHz to reject mains frequency components, which it is getting hit with anyway via the waveform of the anode current. The field pick-up should be trivial. I've not had to mumetal screen pot cores yet in my career. I suspect the VCM163 should be OK without one. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done