View Single Post
Old 2nd Jun 2020, 10:49 pm   #7
Bazz4CQJ's Avatar
Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 2,820
Default Re: Designing a multi-range milli-ammeter

In terms of meter protection, I recall seeing a simple circuit using an op amp which could not exceed certain output level to drive the meter. It may have been designed with the issue of Avo VCM 50uA meters in mind. I did note that you refer to "simple designs", but think this still qualifies?

Data beats opinions most times... that's my opinion, though I have no data on that.
Bazz4CQJ is offline   Reply With Quote