Doug, Can there be love without attachment … or attachment is the first step to love or love begins attachment…
Sudhakar Wasnik, > On Mar 3, 2023, at 8:28 AM, Douglas Nix > <00000bb8ff993b10-dmarc-requ...@listserv.ieee.org> wrote: > > All, > > I just got confirmation from the engineer who created the drawing that that > symbol is indeed a heatsink. Thanks all for your responses. > > Doug Nix > d...@mac.com > (519) 729-5704 > > "Attachment is a form of dependency based on ego; love is non-attachment > based on spirit." - Deepak Chopra > > > >> On Mar 3, 2023, at 03:05, James Pawson (U3C) <ja...@unit3compliance.co.uk> >> wrote: >> >> I would agree with Dan, looks like a notation for a heatsink. >> >> The pinout looks like a surface mount MOSFET so I would guess the meaning as >> “requires heatsinking / thermal spreading as part of PCB structure” >> >> If part of a DC/DC converter or power supply this is a good way to connect a >> high dV/dt node to one plate of a capacitor! Welcome to the wonderful world >> of engineering compromise – EMC or thermal performance? >> >> All the best >> James >> >> James Pawson >> Managing Director & EMC Problem Solver >> >> Office hours: >> My mornings are reserved for full attention on consultancy, testing, and >> troubleshooting activities for our customers’ projects. I am otherwise >> contactable between 1300h to 1730h from Monday to Friday. >> For inquiries, bookings, and testing updates please send us an email on >> he...@unit3compliance.co.uk <mailto:he...@unit3compliance.co.uk> or call >> 01274 911747. Our lead times for testing and consultancy are typically 4-5 >> weeks. >> >> Unit 3 Compliance Ltd >> EMC : Environmental & Vibration : Electrical Safety : CE & UKCA : Consultancy >> >> www.unit3compliance.co.uk <http://www.unit3compliance.co.uk/> | >> ja...@unit3compliance.co.uk <mailto:ja...@unit3compliance.co.uk> >> +44(0)1274 911747 | +44(0)7811 139957 >> 2 Wellington Business Park, New Lane, Bradford, BD4 8AL >> Registered in England and Wales # 10574298 >> >> From: Dan Roman <00000d75e04ed751-dmarc-requ...@listserv.ieee.org> >> Sent: 02 March 2023 22:28 >> To: EMC-PSTC@LISTSERV.IEEE.ORG >> Subject: Re: [PSES] Can anyone tell me what this symbol means? >> >> Maybe that the heatsink is connected to the drain? >> >> Dan >> >> >> From: Doug Nix [mailto:d...@ieee.org] >> Sent: Thursday, March 2, 2023 4:53 PM >> To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> >> Subject: [PSES] Can anyone tell me what this symbol means? >> >> Colleagues, >> >> I came across the eyelash-like symbol above the MOSFET in the image below, >> and I am at a loss for what it represents. My searches of schematic symbol >> databases has come up dry as well. Anyone know what this means? >> >> <image001.jpg> >> >> Doug Nix >> d...@ieee.org <mailto:d...@ieee.org> >> +1 (519) 729-5704 >> >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to >> <emc-p...@ieee.org <mailto:emc-p...@ieee.org>> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> For help, send mail to the list administrators: >> Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> >> For policy questions, send mail to: >> Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> >> David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to >> <emc-p...@ieee.org <mailto:emc-p...@ieee.org>> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> For help, send mail to the list administrators: >> Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> >> For policy questions, send mail to: >> Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> >> David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >> - >> ---------------------------------------------------------------- >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to >> <emc-p...@ieee.org <mailto:emc-p...@ieee.org>> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> >> For help, send mail to the list administrators: >> Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> >> >> For policy questions, send mail to: >> Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> >> David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> >> >> To unsubscribe from the EMC-PSTC list, click the following link: >> https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 >> > > - > ---------------------------------------------------------------- > This message is from the IEEE Product Safety Engineering Society emc-pstc > discussion list. To post a message to the list, send your e-mail to > <emc-p...@ieee.org <mailto:emc-p...@ieee.org>> > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieee-pses.org/emc-pstc.html > > Website: http://www.ieee-pses.org/ > Instructions: http://www.ieee-pses.org/list.html (including how to > unsubscribe) <http://www.ieee-pses.org/list.html> > List rules: http://www.ieee-pses.org/listrules.html > > For help, send mail to the list administrators: > Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org>> > > For policy questions, send mail to: > Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org>> > David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com>> > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> David Heald: <dhe...@gmail.com> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
