Transistor thermo coupling ? - Placid HD BP 2.1 Options  Watch this topic  Print this topic  Atom Feed  RSS Feed View » Normal Threaded

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Jackkan		#1 Posted : Friday, April 29, 2016 4:04:22 AM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		The paired small transistors QN3 and QN5 plus the pair QP3 and QP5 are meant to be thermo coupled. Join these before soldering them in place. Join them with what ? A close up picture would be great. Edited by user Friday, April 29, 2016 4:11:56 AM(UTC)  | Reason: Not specified
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Jackkan		#2 Posted : Friday, April 29, 2016 11:16:49 AM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		http://www.twistedpearau...ransistors-in-new-placid
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Brian Donegan		#3 Posted : Friday, April 29, 2016 1:58:33 PM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Yeah, you don't have to join them, but is does make them work ever-so-slightly better. A small piece of heatshrink or a small tie-wrap works. If you join them after soldering*, a dab of Cyanoacrylate glue will work very well. * ( the heat of soldering will break the joint )
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1 user thanked Brian Donegan for this useful post.		Jackkan on 4/30/2016(UTC)
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avr300		#4 Posted : Friday, April 29, 2016 2:39:08 PM(UTC)
Rank: Member Groups: Member Joined: 6/17/2008(UTC) Posts: 921 Thanks: 1 times Was thanked: 70 time(s) in 69 post(s)		Here you go. Thermal paste between the two - and a band of heat shrink tube. cut.jpg (34kb) downloaded 38 time(s).
1 user thanked avr300 for this useful post.		Jackkan on 4/30/2016(UTC)
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Jackkan		#5 Posted : Saturday, April 30, 2016 1:18:56 PM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		Yet to get to them. Will be using 2 PSUs to juice up my 3 way active boards. Converted a damaged linn amp box for them.
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Jackkan		#6 Posted : Saturday, April 30, 2016 1:24:29 PM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		Decided to dispense using the transformer hold down stuff and used only clear silicone to hold them in place.
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Jackkan		#7 Posted : Saturday, April 30, 2016 1:32:52 PM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		Once completed it will look like this to power my me built active speaker boards.
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Jackkan		#8 Posted : Saturday, April 30, 2016 8:10:48 PM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		Got 1 side of my PSU done. Working very nicely Edited by user Saturday, April 30, 2016 8:13:49 PM(UTC)  | Reason: Not specified
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Jackkan		#9 Posted : Tuesday, May 3, 2016 1:06:12 PM(UTC)
Rank: Member Groups: Member Joined: 4/22/2016(UTC) Posts: 11 Location: Sudbury Thanks: 4 times		KILLER upgrade in all areas of tune playing Edited by user Tuesday, May 3, 2016 1:15:09 PM(UTC)  | Reason: Not specified
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