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Date: April 22, 1986 16:18
From: KIM::DOWNEND
To: MCCARTHY,STEMPLER,LY,SHERMAN,HOFF,MARGOLIN,MEYETTE,MOORE,MONCRIEF,DOWNEND
Please come to a meeting - we need to resolve an issue: MEETING: DO WE WANT "REMOTE SENSE" ON SWITCHING SUPPLIES? WHEN: 4/23/86 @ 1:00 PM WHERE: CENTRAL CONF. ROOM Currently, we specify remote sense as a requirement on switching supplies. All 5V, 10A switchers procured have met the requirement - although I don't think we used it (Pat can confirm this). TX-1 used a switcher from LH Research - did we use remote sense on it? The problem is that we are currently using 5V, 15A switchers in Super Sprint and no manufacturer has anything with remote sense in our price range. We have bought 2000 from Sierracin without remote sense on a deviation basis. QUESTION: If we are NOT going to use remote sense, do we want to pay the extra cost for it? QUESTION: If we ARE going to use remote sense (and you'll have to convince me of that), is the benefit worth the extra cost in our application? In my relatively naive approach, I see our supplies situated physically close to the logic PCB's and I see our current load as being fairly steady. Given that situation, remote sense seems unnecessary. The VIRTUE of remote sense seems to be that our factory will NOT have to check and adjust 5V manually (assuming remote sense is connected to the 5V output at the supply). This is not insignificant given the transitory nature of our production line workers.
(2 / 3)
Date: April 22, 1986 16:28
From: KIM::DOWNEND
To: MCCARTHY,STEMPLER,LY,SHERMAN,HOFF,MARGOLIN,MEYETTE,MONCRIEF,DOWNEND,MOORE
REVISED: RESCHEDULED TO THURS. 4/24/86 @ 1:00PM Please come to a meeting - we need to resolve an issue: MEETING: DO WE WANT "REMOTE SENSE" ON SWITCHING SUPPLIES? WHEN: REVISED: THURS. 4/24/86 @ 1:00PM WHERE: CENTRAL CONF. ROOM QUESTION: If we are NOT going to use remote sense, do we want to pay the extra cost for it? QUESTION: If we ARE going to use remote sense (and you'll have to convince me of that), is the benefit worth the extra cost in our application?
(3 / 3)
Date: April 22, 1986 17:12
From: KIM::DOWNEND
To: MCCARTHY,STEMPLER,LY,SHERMAN,HOFF,MARGOLIN,MEYETTE,MONCRIEF,DOWNEND,MOORE
Pat says remote sense IS run to the logic board on Gauntlet. My error - the swichers came in from Japan with a shunt on the remote sense and I thought they were used as-is. oops.
Apr 22, 1986