Unobtanium bulbs for HP506x: Found 'em!
I was watching FranLab on YouTube and noticed that at 11:23 in this
video, she is holding what looks like one of the unobtainum indicator
bulbs used in the HP5061/HP5065:
https://www.youtube.com/watch?v=KIuYmXT1M1E
That leads to "Transistor Electronics Corporation"
In their catalogue:
https://www.computerhistory.org/brochures/t-z/transistor-electronics-corporation-tec/
On pdf page 9, is the "TIL" lamp-holder, without "-S", and the text says "midget flange base" bulbs.
On pdf page 10, right center, is a picture of "our" kind of bulb.
On pdf page 20 is a table of lamp types, but nothing about threaded models.
Searching ebay for "tec inc", one finds amongst other things:
https://www.ebay.com/itm/29207748296
Which seems to have the right kind of bulb...
And that seller seems to have a lot of TEC lamps...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
On eBay even.
Maybe you guys aren't old enough to have dealt with panel lamps in the
60s. I worked in radio and TV studios that used lots of #327, #382, and
similar bulbs, often in illuminated pushbuttons. The video clearly
shows to me a threaded fresnel cover holding a "midget flanged base
bulb". Fran didn't know to use a knife edge to pry the bulb out of the
cover - these bulbs always were a pain to deal with.
There are lots of this size bulb available, such
as: https://www.ebay.com/itm/314217639000
For other voltages check out:
https://www.digikey.com/en/products/filter/lamps-incandescents-neons/10
1?s=N4IgTCBcDaILYEsAmBzApgFwAQDMA2AhgHbpIgC6AvkA
Bob L.
Sent: Tuesday, January 31, 2023 at 7:25 AM
From: "Poul-Henning Kamp via time-nuts" time-nuts@lists.febo.com
To: time-nuts@lists.febo.com
Cc: "Poul-Henning Kamp" phk@phk.freebsd.dk
Subject: [time-nuts] Unobtanium bulbs for HP506x: Found 'em!
I was watching FranLab on YouTube and noticed that at 11:23 in this
video, she is holding what looks like one of the unobtainum indicator
bulbs used in the HP5061/HP5065:
[1]https://www.youtube.com/watch?v=KIuYmXT1M1E
That leads to "Transistor Electronics Corporation"
In their catalogue:
[2]https://www.computerhistory.org/brochures/t-z/transistor-electronics
-corporation-tec/
On pdf page 9, is the "TIL" lamp-holder, without "-S", and the text
says "midget flange base" bulbs.
On pdf page 10, right center, is a picture of "our" kind of bulb.
On pdf page 20 is a table of lamp types, but nothing about threaded
models.
Searching ebay for "tec inc", one finds amongst other things:
[3]https://www.ebay.com/itm/29207748296
Which seems to have the right kind of bulb...
And that seller seems to have a lot of TEC lamps...
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
incompetence.
time-nuts mailing list -- time-nuts@lists.febo.com
To unsubscribe send an email to time-nuts-leave@lists.febo.com
Robert LaJeunesse via time-nuts writes:
There are lots of this size bulb available, such
as: https://www.ebay.com/itm/314217639000
But those dont have the threads necessary to screw them into
the lamp-holders on a HP5065 or HP5061 frequency standard.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.