a real challange?

[Electronic M]

Originally Posted by JohnCT

Update: I took an NOS RCA peaking coil from my parts supply and measured it. On my Z-Meter, it reads 5.8uh (marked 5.6 on the bag).

On my cheapo mega328 tester, it reads as a 0.2 ohm resistor... I tried several times and did the calibration procedure, but it won't read inductors - it sees them as resistors. Now, this tester is at least three years old and it's possible that this early version didn't read inductors while the later ones (which still look identical) purportedly do.

Incidentally, on the Sencore Z-Meter this 5.6uh peaking coil shows 5 rings.

Lastly, this is an RCA part number 119590. Judging by the part number, I'd say this is an early 60s to mid 60s coil for a color TV, but it likely covered many years.

If anyone wants this, it's theirs for the asking. Email me at delstv@aol.com

John

My 328 based tester (which died on me a while ago) couldn't read inductance that low. Also the lower the inductance the higher the series resistance of the coil had to be to be for it to NOT register as a resistor. It is a quirk to be aware of. These meters are useful (why I'm going to replace mine again) but not as good as a pricey dedicated inductance tester, didicaed cap/ESR tester or dedicated Solid state devices tester...it's only good within it's range limits.