Main reason I ain't looking at a peak atlas: I don't trust the instantaneous measurements those things take.
+1 You are not wrong.
My DCA75 misidentifies zener diodes. It is
confident that my 1N4678 1.8V zener diodes are actually 3.3V. This isn't intermittent, borderline, or the occasional hiccup.... it
insists. I can't recall the other voltages it has misidentified off the top of my head, but there have been others.
So, I bought the ZEN50... It's only purpose is to measure diodes, zener diodes
specifically. Yeah, I agree, it seems silly to spend that kind of cash on a meter that I'll use so rarely, and on a single type of component.... but I
need to trust my test equipment, so it'll be worth it.
I had visions of myself smiling like the kids in the toy section of the Sears catalog while hooking up my zener diodes and viewing the voltage with ease! Oh how this wonderful gadget is going to save me tens of minutes per year, I can't believe I've waited this long to buy one!
Except that son of a bitch thinks they're 3.3V too....
So for now (and possibly from now on), all of my zener diode testing will continue the way I've always done it.... A DC power supply, current limiting resistor, and DMM.
I had an old DMM modified for the task many years ago, but the other folks at the shop were uncomfortable with the AC cord that had to be plugged in to supply enough voltage for some of the higher voltage zeners we worked with.
Maybe one day I'll build a gadget like yours.