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Discussion in 'Amp Tech Center' started by The Guy, Mar 27, 2017.
the true RMS up to 10kHz sounds like a nice feature for audio work
Fluke 87V. I have a Simpson 260 as well. But if you can only have one and there's a possibility of some idiot getting ahold of it, get the Fluke 87V.
By definition, anything I own is guaranteed to have an idiot get ahold of it.
Go to Home Depot unless you're a pro. I wouldn't spend the money. I've got a Fluke and a Triplett as a backup I use because electronics is my living. I've got Simpsons, old analog Weston's and, I think, an old digital Micronta I picked up at Radio Shack about 35 years ago lying around. Just threw away 2 old Xerox labeled Simpsons, the kind of meters that look like a long narrow box with the flip out feet and a row of square buttons you push to change functions. I prefer the analog ones for troubleshooting logic circuits. All I need to see is the voltage swing and don't have to wait on the numbers to settle down.
Fluke is my go to they always are right on.
True RMS is a marketing ploy. Problem with "true rms" is its only "true" if the wave is semetrical above and below 0. In other words, if the above isn't the same amplitude and shape as the below, the reading you get isn't "true". I have a fluke 87 from a job I left but with tube amps, it doesn't need to be anymore accurate than a 40 dollar VOM. If you want a good quality meter get a Tripplet. Just as rugged and half to a third the price of a Fluke.
Update: my fluke 187 got fried measuring 450vDC.
Nope... Fried resistor network.
Odd, it should have easily handled that voltage.
I know... pretty weird.
perhaps that meter wasn't expensive enough for a novice who is poking around in high voltage ciecuits?
I might be a novice but I am not stupid.
I had 2 Fluke 87's while at Xerox. The one I have now I left there with. My first blew, too and I just order another and tossed the other. They're rugged but they are a lot like Trane Air conditioners. You pay a premium just for the name. Honestly, my Triplett 9004 (I think is the model), feels heftier and has a thicker rubber cover than the Fluke.
You want the best? HP/Agilent/Keysight 3458.
If you want the best, do not expect one tool to do all... multi
What functions do you want? oltmeter> Ohmmeter?Ampmeter?
I would just get as much Fluke as you could afford...
The most important tool in amp making is a good soldering stationm IMHO... Hakko
What role are you expecting a VOM to play in building an amp?