#garfield Logs

Oct 20 2021

12:18 AM rue_mohr: so, I need to try to work out international crate shipping again
07:56 AM Tom_L: morning
08:29 AM rue_bed2: morning
10:00 AM aandrew: morning
12:27 PM Tom_L: ok driver on the way
02:52 PM Tom_L: ok, one end of the wiring is done, waiting on the driver
03:02 PM Tom_L: need 1k pulldown on the pendant A select
03:03 PM Tom_L: 47 ohm on the driver
06:59 PM rue_mohr: ok
07:56 PM Tom_L: tuesday
08:22 PM rue_mohr: no, that was wednesday
08:23 PM Tom_L: delivery
08:23 PM Tom_L: next
08:23 PM * rue_mohr bumps up the size of toms character buffer
08:29 PM Tom_L: the driver should be here next tuesday
08:35 PM rue_mohr: i'd assembled that
08:35 PM rue_mohr: https://www.powerelectronics.com/content/article/21861299/why-have-an-air-gap
08:36 PM rue_mohr: gonna add a page to my smps book!
08:36 PM rue_mohr: as soon as I can get out of my chair
08:38 PM Tom_L: frees me up for other stuff
08:39 PM Tom_L: besides, i couldn't build one
08:39 PM rue_mohr: no I mean I'd assembled your sentence
08:39 PM rue_mohr: :)
08:39 PM Tom_L: oh
08:46 PM rue_mohr: whoa nodded off
08:46 PM rue_mohr: just about did a header into the desk
08:59 PM aandrew: rue_mohr: isn't a half a turn just where you exit the ferrite/bobbin/whatever on the opposite side of where you entered?
09:01 PM rue_mohr: that would be a turn around the bottom leg tho
09:07 PM aandrew: hm?
09:07 PM aandrew: take a torroid, take a wire and pass it through the middle. that's a half turn. curl the wire back around so the two ends of the wire are on the same side, that's a whole turn
09:08 PM aandrew: I'm not sure that's true though --- CTs are often 50:1 or whatever and that ':1' is just a wire passing through
09:09 PM rue_mohr: no
09:10 PM rue_mohr: it only works on cores that are split, like IE or EE