(23-08-2023, 07:04 AM)ppppenguin Wrote: A question to Trevor and Tracy. Since you use a DMM for volts and ohms, why do you use an AVO for current?
In the main it is when I am doing valve tests as I use multiple meters. I like to see the current flow at a glance with the swing of the needle. It also makes me think more closely as to what I am doing rather than use a digital meter, thinking it will cope with whatever happens. A digital analogue display meter may be useful in this case but I have never had, or used, one.
I think the swing of an analogue needle conveys more than a less obvious rise of a number. The rate of change can be a good indicator (especially when the needle flys to the endstop which luckily I am wary enough and careful to avoid
). I tend to use my oscilloscope in a similar way, watching the input and output waveforms as I turn on the power and watch the rise in output. I think it's easier to cope with relative levels than understand the precise relationship between a clutch of numbers in an instant.Tracy
