what is this used for?

[mbailey]

conar r c tester model 311 follow this link to see it
http://www.radiomuseum.org/r/conar_r_c_tester_311.html
just curios what it's use is?

[Enzo]

They call it a RC tester - resistor and capacitor tester.

it is an impedance bridge Eico and Heathkit made them as well. I have an Eico I built 50 years ago across the room from me now. Mine will also measure inductors as long as you had a sample to compare it to. Knightkit probably made one too.

When I was a kid and didn't know all the capacitor color code systems - there were quite a few of them - I used it to measure caps. I knew the resistor code, and had a VTVM, so I didn;t use it for that much. The magic eye tube was cool and gave real leakage indication at real voltages. My Eico went up to 500v on the test function. I suspect the COnar did as well, most of those test gear items were pretty similar. I was into short wave radio then, so I did match inductors now and then.

[Garydean]

Yes Knight made the KnightKit R/C Tester Model 83y124. They also used the Magic Eye.

gary

[mbailey]

so i can test caps w/ this? how do you use it I have no manual?

[Enzo]

I would start by googling the model number and brand. Owners manuals are online for a lot of this old stuff.

If you just want to measure caps, inexpensive DMMs will do that.

[Garydean]

I have an Eico cap tester....very old school as well. . Your model's schematic and user manual is going to be hard to locate. I'm sure it works like all the rest of them, same circuit and procedure.

http://tubesound.com/2008/08/23/eico...acitor-tester/