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Title: Plate transformer bubba. Post by: Tom W2ILA on January 17, 2023, 08:09:18 PM This is the plate transformer of a B&W5100B. These wire ends are sticking out. Without pulling the transformer apart, any idea why they ended up here? Are they on the inside sticking out? Or somehow got jammed in from outside?
Title: Re: Plate transformer bubba. Post by: KB1VWC on January 17, 2023, 10:39:04 PM I’ll do the speculation. Electrostatic shield being tied to the core and then ground? Or maybe the laminations were buzzing and someone jammed a hunk of wire or a star washer in the laminations?
Steve Title: Re: Plate transformer bubba. Post by: WD4LUR on January 18, 2023, 07:54:09 AM I agree with Steve. It was probably buzzing and that was to silence it.
Title: Re: Plate transformer bubba. Post by: K8DI on January 18, 2023, 07:58:38 AM I’ll agree with Steve’s other guess…I’ve seen this fifty or so times on audio transformers with electrostatic shields, the shield is tied to the core.
Ed Title: Re: Plate transformer bubba. Post by: w4bfs on January 18, 2023, 11:07:51 AM one EFJ Thunderbolt hV center tap xfmr was grounded in this manner. Another Thunderbolt was not. Ohmmeter test will confirm or deny.
Title: Re: Plate transformer bubba. Post by: Tom W2ILA on January 18, 2023, 07:40:04 PM Fished it out and Ohm meter says ….it’s shield. How would it have been properly connected?
Title: Re: Plate transformer bubba. Post by: K8DI on January 19, 2023, 09:45:23 AM Fished it out and Ohm meter says ….it’s shield. How would it have been properly connected? It was properly connected. Put it back to properly connect it. Ed |