Could you identify this part?

[michouthefirst]

Hi all, I received a bunch of items and this one I could not identify.

 

[ticknpop]

It's a spare part from the Tardis, I believe the Doctor would pay big bucks for one.

 

[michouthefirst]

Good, because I have 20 of them

 

[lcsaszar]

optocoupler?

 

[michouthefirst]

It looks like it is not. Putting an ohmmeter between the 2 "C" terminals reads a few ohms whatever the polarity is. The same goes if I read between the "In" and "Out". Resistence is infinite between any "C" and "In" or "Out".

 

[Elvee]

Hi all, I received a bunch of items and this one I could not identify.

They look very much like delay lines. They could also be filters.

 

[JMFahey]

It looks like it is not. Putting an ohmmeter between the 2 "C" terminals reads a few ohms whatever the polarity is. The same goes if I read between the "In" and "Out". Resistence is infinite between any "C" and "In" or "Out".

What you measure is compatible with a line/RF filter.
A low DC resistance L from input to output, "maybe" same between grounds ("C" might mean "common" , oldspeak for Ground) and one or more low value capacitors from hot to ground.

*If* you were wishing to analyze it or something, drive it with a sweep signal, load it with something, 10K is as good as anything else to start, and measure/trace what comes out.

 

[tauro0221]

Hi,
I agreed with Elvee. It is possible that it is a delay. They used something like that in old computer memory and analog scanners. Since you have 20 what about breaking one apart and see what it is in inside.

 

[simon7000]

Engineered Components Company Delay Line P N TTLDL 25M | eBay

Shows a more modern unit with drivers.

 

[michouthefirst]

OK, got it from the eBay description (his description was very hard to read since it has numerous items and the guy had a very long description with all sorts of fonts and colors).

Anyways, here it is:

60pF input, 20uH bridge, 60pF output.

So, this seems to be a low-pass filter. Right?

 

[DF96]

Yes, LP filter - maybe intended for video or stripping RF off audio. Rough calc gives 5MHz cutoff and about 600ohms impedance.

 

[lcsaszar]

Why not ask them?
EC2 Contact Us - Cornucopia Tool & Plastics Inc. -

 

[davidsrsb]

With those values and 600R source and load you get a 6MHz low pass, so its some sort of video filter

 

[michouthefirst]

Thanks for all your answers. This forum is very helpful.