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In Reply to: RE: Simpson multi meter follow up posted by gonzo on September 27, 2016 at 20:13:16
The digital meters are easier to deal with. Especially when you are trying to bias.
Get a good Fluke DMM. You can pick up a Simpson pretty cheap almost anywhere. Like a flee market.
I always wondered what happened to mine?????? Don't miss it but where did it go?
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An analog meter just seems way appropriate for guys interested in vintage gear. I have an idea..get one of each!
An RS meter from the 80s isn't going to cost an arm and a leg as these things go...and I don't completely trust numbers that are digital.:-)I want to be able to compare the two. Besides, you can take readings on both and maybe figure out why the digital meter is giving funny results.
That's my first meter, purchased and assembled in 1975. Still have it, likely works fine if the switches are cleaned.
The drawback for tube work is that its input resistance is 50K ohm/volt, the same I believe as the Simpson 260. This makes it hard to obtain accurate bias voltage readings at the high-resistance node of a grid, unless you do some on-the-fly extrapolation. The internal meter resistance forms a voltage divider with the grid resistor.
A DMM typically has a 10 meg input R. Nostalgia aside, easier to work with.
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