They look very much like delay lines. They could also be filters.Hi all, I received a bunch of items and this one I could not identify.
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.
Engineered Components Company Delay Line P N TTLDL 25M | eBay
Shows a more modern unit with drivers.
Shows a more modern unit with drivers.
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?
Anyways, here it is:
60pF input, 20uH bridge, 60pF output.
So, this seems to be a low-pass filter. Right?
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