Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace
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Hi Dave,
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Thank you for your offer but for the moment I think I have a better solution. The pins coming out of a tube base are about 1/4" (6.8mm). If I try to push a longer pin into a tube socket it bottoms out at about 0.28" (7.25mm). So I'm concerned that the 12mm pin length you have will cause problems. I have found a workable solution. Vector still makes pins that are the right diameter and approximately the right length. They are meant to be pressed into place in a PC Board through hole and then soldered to the pad surrounding the hole. Since the vacuum tube curve tracer I was making will ultimately be built on a printed circuit board I can work out a way to use the Vector pins I found. Dennis Tillman W7PF
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Sent: Monday, March 27, 2017 3:14 PM Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Dennis I have several new 9 pin plug bases here which you are welcome to- these are in essence a plastic base with the pins projecting from both sides of the plastic and were originally used pcb mounted to make a test access (multi) point in early Tait radios - the pins project equally each side of the plastic base roughly 12 mm or so- I've not measured it. Can dig one out and take a picture if you're interested. DaveB, Christchurch, NZ -----Original Message----- From: TekScopes@yahoogroups.com [mailto:TekScopes@yahoogroups.com] Sent: Tuesday, March 28, 2017 4:16 AM To: TekScopes@yahoogroups.com Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Hi Dave, I need one or two. I did find a source for 9-pin socket savers. Those can be opened up and the plug part separated from the socket. They are less than $3 so I will buy those. Same for 8-pin octal socket savers. So far I haven't found any 7-pin socket savers still being sold. One was sold on Ebay the other day but my $28 bid was not enough to win it. Dennis Tillman W7PF -----Original Message----- Sent: Sunday, March 26, 2017 10:59 PM Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Dennis How many of the 7 and 9 pin plugs do you need? Are you looking for a significant number? 73 Dave, ZL3FJ -----Original Message----- Sent: Monday, March 27, 2017 3:46 PM Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Hi Bill, In my case I needed tube PLUGS that would plug into a tube SOCKET. That is my problem. I am well aware of Tubesandmore. They certainly have a nice selection of 4 pin, 5 pin, 7 pin, 8 pin , and 9 pin tube SOCKETS. Unfortunately other than 8 pin tube PLUGS they, or anyone else for that matter, do not sell 7 pin miniature tube PLUGS or 9 pin miniature PLUGS. Since 7 pin miniature tubes and 9 pin miniature tubes have their pins coming right out of the glass envelope this will make it very hard to get what I need by smashing spent tubes to try and get an intact set of pins around the base of the tube. As John Gord pointed out one way to find some of these is by searching for socket savers. They, too, are scarce these days. Not many people are designing things with tubes. There was a 9 pin and a 7 pin socket saver auction on Ebay and I bid $28 for them but someone outbid me. I have no way to know how high that person's ultimate bid might have been. Dennis Tillman, W7PF -----Original Message----- Sent: Sunday, March 26, 2017 5:08 PM Subject: Re: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Dennis and all, Has everyone been overlooking the best source for tubes and related hardware? https://www.tubesandmore.com/products/tube_accessories Bill KB3DKS -----Original Message----- From: 'Dennis Tillman' dennis@ridesoft.com [TekScopes] <TekScopes@yahoogroups.com> Sent: Wed, Mar 22, 2017 10:06 am Hi John, Thanks for the suggestion. I know I kept coming across octal socket savers all the time but I never saw a 7 pin or 9 pin socket saver. I will give that a try. Dennis Tillman W7PF -----Original Message----- Sent: Tuesday, March 21, 2017 5:06 PM Subject: RE: [TekScopes] Re: A Vacuum Tube Curve Tracer for all Tek Semiconductor Curve Trace Try a Google search for "7 pin socket saver". I got some hits. 9 pin socket savers seem to be more common. It looks like at least some of the socket savers could be disassembled. --John Gord ------------------------------------ Posted by: Doxemf <doxemf@aol.com> ------------------------------------ ------------------------------------ Posted by: "Dennis Tillman" <dennis@ridesoft.com> ------------------------------------ ------------------------------------ Yahoo Groups Links ------------------------------------ Posted by: "Dave Brown" <tractorb@ihug.co.nz> ------------------------------------ ------------------------------------ Yahoo Groups Links ------------------------------------ Posted by: "Dennis Tillman" <dennis@ridesoft.com> ------------------------------------ ------------------------------------ Yahoo Groups Links ------------------------------------ Posted by: "Dave Brown" <tractorb@ihug.co.nz> ------------------------------------ ------------------------------------ Yahoo Groups Links
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