Help identifying inductors

[throbscottle]

I have a few barrel type inductors pulled from boards with a part number I can't make head or tail of. It consists of a number with another number at right angles to it, sharing a middle digit. Can't make out if it contains a value or not.

So for example I have a couple like:

[LATEX]
\begin{quote}\small\texttt{\begin{tabular}{p{0}p{0}p{0}p{0}p{0}}\,&\,&H&\,&\,\\9&7&2&7&9\\\,&\,&9&\,&\,\end{tabular}}\end{quote}[/LATEX]

The 97 part is possibly bold and possibly slightly separated, but it's hard to tell. Anyone familiar with these type of part numbers, or know who makes them?

 

[mvs sarma]

why not a close and crisp photograph?

 

[throbscottle]

Okay, here's an identity parade. You can see why I used Latex instead of a photo. Device in original post is same construction, just a different part number, different number of turns.

 

[unclejed613]

having seen many numbering schemes, my best guess would be that the "80k" part of the number is value (8uh?, as in 8 followed by no zeroes, 81 would be 80uh, 82 would be 800uh, and k is a tolerance designation, and i think J would be 5%, and K is 10%. the other digits i can only guess is a date code of some type. the letter likely is the month, the double zero is the year. if the letter is the month, then the 9 underneath is more likely to be the factory code.... just a guess. as for identifying the manufacturer, rotsa ruck..........

 

[vtech]

Looks very similar to the older Toko series

https://www.electro-tech-online.com/custompdfs/2013/08/0900766b80f33276.pdf

 

[throbscottle]

I think you guys might have nailed it for the ones in the photo, but what about the first one "97279" with H above and 9 below? Even with 97 as the year (I don't remember where it came from, but I don't think it is actually that old), 279 doesn't make much sense...

I'll be building this https://www.google.co.uk/url?sa=t&r...0zPhBEod8IeJ5lafedsp_NA&bvm=bv.50768961,d.ZGU inductance meter soon (when the 74hc132 arrives in the post), so hopefully it will make more sense.

 

[throbscottle]

Ok I built the meter on breadboard. The values don't seem to correspond to the part numbers at all.

Seems a good little inductance meter though.