Weird symbols in an schematic of non-invasive DC sensor
- Thread starter zaukkoo
- Start date
Thank you Bertus!
Are the O/S-potentiometer's two floating connectors connected to the both ends of the hall-sensors core?
If you want some background of this situation, I am trying to replicate the expensive commercial DC-current sensors using a regular split core AC-sensor (which has nothing but the core and it's connectors) by attaching this circuit to it. This is to aim at a low price, that is essential for our project. Our project is to make affordable measuring systems connected wirelessly to a database, and that to a web based UI.
Okay, I think I will order one, open it up and see what it's got inside.
Thank you very much for your help!
I am going to keep this thread open, in case someone has more good informed guesses.
Could the "+" thing be a resistance bridge sort of thing? A sensor of some sort?
The "floating ends" of O/S I would expect to go to +15 and -15, but it would show that I would think.
"Hall Effect sensor"? Is that supposed to be the objective of the device? A LEM or current transformer?
Yes. It's a Hall Effect DC-current transformer.
Which is the Hall Effect device? The O/S pot or the "+" thing? The "+" thing a ratiometric hall effect device, trimmed by the O/S pot? I haven't seen a four leaded such device before, but I guess that doesn't mean much.
