? I have wondered the same thing about HP transformers over the years.? HP In Loveland, Colorado for years had a separate facility we referred to as the Components Building.? They wound transformers for a lot of the products made at the main Loveland facility and maybe other HP facilities.? You could even spec out a transformer and have one designed and wound for a custom "Electronic Tool" or a prototype instrument.? I did that a few times over my 23 years with HP.? I always wanted a catalog of what was already available as it seemed rather inefficient to spec out a transformer and have it designed and wound when you knew there were already several production or prototype designs that would fit the need.? I never heard of a transformer catalog, but there had to be a way of sharing the info as some transformers were used in other products at other divisions.
? The drawings (like in the TEK catalog) were transferred to microfiche cards (think punched cards with a patch of film in the middle) and then kept on file so you could order a paper copy by part number, or even the card so you could use it on a 'fiche reader in your area and avoid the "blue lines" for larger prints that were basically blueprints and faded in the light over time.
? The HP Corporate Microfiche "Parts Information Report" was the primary database of all the HP parts for many years, but generally held less information for each part and seldom had drawings.? Working from the 'fiche to find a part number would have been a huge task.? I never found a way to to electronically access the parts data prior to leaving HP.? I always wondered how the microfiche transition to electronic documents was done and what that database looked like, I'm glad I didn't have that job!? I never saw what system they moved to before my exit in 2000 but knew they had been working on it for years? Too bad I wasn't friends with a "materials engineer" or whoever had their finger on the pulse of the parts databases.? It would have be awesome to have some sort of access to the data.
? If you have an HP part number I could look it up to see if it is in the PIR I have access to (1991 or prior).? I don't remember what it had for transformer data.? There are a lot of entries in the 9100-xxxx range and a reverse lookup is really only good for a manufacturer PN to HP PN lookup (for purchased parts) due to the many transformers HP used. The limited data in the PIR would be a handicap as well.? There was also a "Where Used" 'fiche that I thought was part of the PIR but I do not have that section of the PIR if it was in there.? I only know one other person that remembers the "where used" 'fiche.? It was awesome if you had a part number, you could look and see what instruments and HP Divisions used it.? I recently asked the only Engineer I know still at HP and he had never heard of such a thing, so if it still exists electronically, the rank and file may not be aware of it.
? HP did publish one parts catalog that I have, it is the 91 page 1998 picture book "Northern Colorado Divisions Hardware Catalog".? The pictures weren't great and didn't scan well when I tried many years ago, but I imagine it could be done with a a camera or modern scanner.? It hasn't proven very useful to me, but it was kind of a neat idea and is in really good shape for a 45 year old soft bound catalog.?
Clay
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