[Collins] ID a bunch of Collins power transformers?

[Dr. Gerald N. Johnson]

On Tue, 2006-02-21 at 08:51 -0800, Ian Wilson wrote:
> Dr. Jerry,
> 
> Thank you for the thoughtful response. Many things there to bear in mind
> when attempting to determine the likely use of a mystery transformer.
> 
> Here are the part numbers that I'm hoping to get a handle on:
> 
> 617-300-00 
> 672-0257-007 
> 672-0257-009
> 672-1051-00
> 672-1121-00
> 672-1141-00
> 672-2110-00
> 672-2430-00
> 672-2480-00
> 672-2650-00
> 672-2710-00
> 672-2760-00
> 672-2790-00
> 672-2840-00
> 672-2850-00
> 672-2860-00
> 672-2880-00
>      
> 672N108B
> 672N109C
> 672N110A
> 672N111A
> 672N112A
> 672N114A
> 672N126
> 672N128
> 672N140
> 672N146
> 672N148
> 672N154
> 672N170
> 672N171
> 672N204
> 672N205
> 672N221
> 672N224
> 672N228
> 672N243
> 672N257
> 672N264
> 672N268
> 672N276
>      
> 674-1670-00
> 674-2690-00
> 674N166{2
> 674N175
> 674N269
> 677N141A
> 678-2600-00
> 
> Thanks again!
> 
> --ian K3IMW
> 
> 
Let me expand on Collins part numbers. In my history, all Collins part
numbers have a 3 digit family, a dash, a 4 digit main number and a
suffix or dash number. In the old days that suffix was used as -00 while
on the drawings (whether specification or engineering drawing) the last
digit making it a three digit dash number designated the paper size, 1
being A (8-1/2 x 11) 5 being F size...in the 60s part numbers started
being use up and so dash numbers came to signify variations within a
common family. So instead of separate 7 digit part numbers for each
resistor value, one 7 digit part number might be for 1% quarter watt
resistors while the 999 dash numbers show different resistance values.

I don't know about numbers other than xxx-xxxx-xxx. The 672N274 type
number may be a much older Collins number or a vendor number.

I don't have an extensive list of Collins transformer numbers and those
I have all seem to show 668 family for transformers. It is possible to
download Collins manuals from various sources and look for part numbers
to match, but that leaves out many other products and applications.
There may be a few of your numbers identified on-line and a google
search may turn those up.

Those who are searching for a replacement transformer may find something
of interest in your list.
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer