Hey everyone,
I recently bought a K40 (G3020) and want to add an Ammeter. I bought this one from amazon :
Before I dive in and tackle installing it - has anyone else installed simular? Can anyone confirm it will work ?
Many thanks
Jammy
Hey everyone,
I recently bought a K40 (G3020) and want to add an Ammeter. I bought this one from amazon :
Before I dive in and tackle installing it - has anyone else installed simular? Can anyone confirm it will work ?
Many thanks
Jammy
Welcome Julien!
Sorry to be the bearer of bad news, but you really want an analog ammeter, not a digital one. Fortunately, not a very expensive problem…
An analog ammeter, for units with only digital display. The digital display is not accurate. An analog ammeter may not be essential before your first test, but is a strongly recommended add-on. @donkjr describes how to add an analog ammeter.
The K40: Getting Started category has lots of useful information in it, if you haven’t seen it yet! Highly recommended!
Ah ok - wont work ? I actually ordered an analogue one that’s taking forever to come - but would have preferred digital for the aesthetics - never mind - thanks for answering.
Well, it at least won’t be accurate enough to be useful. So “won’t work” as in “won’t do the job” not “won’t have any apparent function”
No thanks to COVID-19 for all the disruption to everyday life. Slow shipping for our hobbies is probably the most minor of the inconveniences we’re encountering, I guess.
Just out of curiosity, why wouldn’t a digital ammeter be accurate?
Two separate issues:
Gotcha, thanks for the explanation.
IMO the biggest problem is that it is hard to see and interpret short analog signals on a digital meter.
For example you will not be able to easily see the peak noise in the cathode current when the LPS arcs.
I installed a small digital voltmeter across the power pot (center pin, wiper, to ground). It gives a reading of the power setting before the laser is enabled. That, along with the analog ammeter makes the power setting easy and accurate.
Yes, been using that approach for some time