Not exactly a sophisticated piece of test equipment, but lets you eject bad metal enclosure tubes early: <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> (all the metal tubes in the 1935 table radio passed)
Oldschool tubes
Started by ●November 9, 2017
Reply by ●November 9, 20172017-11-09
On 2017/11/09 8:14 AM, bitrex wrote:> Not exactly a sophisticated piece of test equipment, but lets you eject > bad metal enclosure tubes early: > > <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> > > (all the metal tubes in the 1935 table radio passed)Can you not take the photo in daylight? Could barely make out the outline of the tester. I assume it is a go/no-go style, and perhaps verifies if the filaments are good. Can't imagine it doing much else... Of course, one can tell if the filaments are good if the tube warms up in the set, so if that is all it is then it is an early audio-phool tool. John
Reply by ●November 9, 20172017-11-09
bitrex wrote:> Not exactly a sophisticated piece of test equipment, but lets you eject > bad metal enclosure tubes early: > > <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> > > (all the metal tubes in the 1935 table radio passed)A common as dirt filament tester. They were common as dirt, and sold for about $3 in the early '60s. They hyped as real tube testers.
Reply by ●November 9, 20172017-11-09
On 11/09/2017 05:58 PM, Michael A Terrell wrote:> bitrex wrote: >> Not exactly a sophisticated piece of test equipment, but lets you eject >> bad metal enclosure tubes early: >> >> <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> >> >> >> (all the metal tubes in the 1935 table radio passed) > > > A common as dirt filament tester. They were common as dirt, and sold > for about $3 in the early '60s. They hyped as real tube testers. >"It Does What It Says on the Tin"
Reply by ●November 9, 20172017-11-09
bitrex wrote:> On 11/09/2017 05:58 PM, Michael A Terrell wrote: >> bitrex wrote: >>> Not exactly a sophisticated piece of test equipment, but lets you eject >>> bad metal enclosure tubes early: >>> >>> <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> >>> >>> >>> (all the metal tubes in the 1935 table radio passed) >> >> >> A common as dirt filament tester. They were common as dirt, and >> sold for about $3 in the early '60s. They hyped as real tube testers. >> > > "It Does What It Says on the Tin"Just like the cans of 'Replacement Vacuum'?
Reply by ●November 9, 20172017-11-09
On 11/09/2017 06:24 PM, Michael A Terrell wrote:> bitrex wrote: >> On 11/09/2017 05:58 PM, Michael A Terrell wrote: >>> bitrex wrote: >>>> Not exactly a sophisticated piece of test equipment, but lets you eject >>>> bad metal enclosure tubes early: >>>> >>>> <https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> >>>> >>>> >>>> >>>> (all the metal tubes in the 1935 table radio passed) >>> >>> >>> A common as dirt filament tester. They were common as dirt, and >>> sold for about $3 in the early '60s. They hyped as real tube testers. >>> >> >> "It Does What It Says on the Tin" > > > Just like the cans of 'Replacement Vacuum'? >How do I get the vacuum out of the can and back in the tube, though?
Reply by ●November 9, 20172017-11-09
I am just barely old enough to remember "tube testers" in some stores like Western Auto, ACE Hardware, etc... They were quickly becoming obsolete. On the other hand, I am old enough to remember (somewhat vividly) when the MOS Technology 6502 came out.
Reply by ●November 9, 20172017-11-09
On Thu, 9 Nov 2017 16:47:59 -0800 (PST), mpm <mpmillard@aol.com> wrote:>I am just barely old enough to remember "tube testers" in some stores like Western Auto, ACE Hardware, etc... They were quickly becoming obsolete. > >On the other hand, I am old enough to remember (somewhat vividly) when the MOS Technology 6502 came out.I'm old enough to remember that, in my early teens, it was my assignment in my father's TV repair shop to test all the tubes on sets incoming for repair ;-) ...Jim Thompson -- | James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | STV, Queen Creek, AZ 85142 Skype: skypeanalog | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | It's what you learn, after you know it all, that counts.
Reply by ●November 9, 20172017-11-09
bitrex wrote: >> Michael A Terrell wrote:>>>> bitrex wrote:>>>>>> Michael A Terrell wrote: >>>> >>>> A common as dirt filament tester. They were common as dirt, and >>>> sold for about $3 in the early '60s. They hyped as real tube testers. >>> >>> "It Does What It Says on the Tin" >> >> Just like the cans of 'Replacement Vacuum'? >> > > How do I get the vacuum out of the can and back in the tube, though?That was explained on the tin, not in the ads.
Reply by ●November 9, 20172017-11-09
On Thu, 9 Nov 2017 11:14:39 -0500, bitrex <bitrex@de.lete.earthlink.net> wrote:>Not exactly a sophisticated piece of test equipment, but lets you eject >bad metal enclosure tubes early: > ><https://www.dropbox.com/s/m5b4ogl4pqn8tu1/IMG_20171109_110954264.jpg?dl=0> > >(all the metal tubes in the 1935 table radio passed)Tube testers came as Filament test Emission (basically see some plate current) Gas (grid current) Shorts "Mutual conductance" with real AC signals There were transistor testers for a while, but they went away. -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
