General > General Technical Chat
Someone in 1988 had a boring job...
tom66:
You think that's a boring job, I once tore down a Panasonic plasma TV. The drive board had about 30 off IGBTs/MOSFETs on it and damn near every one had a tiny slip-on ferrite bead on its drain/collector.
RoGeorge:
Maybe the shrink tube from that floppy connector has magnetic properties, and it's put there as a ferrite bead. ;D
coppercone2:
--- Quote from: tom66 on October 14, 2022, 08:27:05 pm ---You think that's a boring job, I once tore down a Panasonic plasma TV. The drive board had about 30 off IGBTs/MOSFETs on it and damn near every one had a tiny slip-on ferrite bead on its drain/collector.
--- End quote ---
they have applicators for those beads IIRC
Just stick them on a very slightly expanding elastic rod from the back and push them down with a sleeve
PlainName:
--- Quote from: coppercone2 on October 14, 2022, 06:16:00 am ---thats pretty obvious to me, its incase you put too big a screw in there, or someone puts a washer under the screw that is the wrong size and it drifts to the side. how many times do you lose washers and end up with something just a tad too big that you are sure will sit correctly?
I think that's a good design decision.
--- End quote ---
I think it's a poor design - it looks obvious to me that the connector is too close to the hole. Maybe they laid it out then found they had to add the hole right there, because. The sleeve is a hack to cope with that, not a good decision in and of itself.
themadhippy:
--- Quote ---I'd have a bottle of oil,
--- End quote ---
duck oil? or at least thats we knew it as
--- Quote --- 3-pronged expanding plier type tool (spiked prongs) and I'd sit for hours dipping pre-cut rubber sleeves in the oil, sliding them onto the tool, expanding the tool so it stretched the sleeving and sliding wires in.
--- End quote ---
pink sleeves ? spent a few months wiring mobile military workshops that used varies multipole connectors and every wire had to have those fitted,along with an id number,you only forgot to add the number or sleeve once,and only discovered you'd forgot it after the final wire was soldered to the connector
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