Hey! I need any information on how i calculate a quarter bridge or if i can do this using the INA125P. The idea would be to make a "universal" connector to wich i can quickly connect a strain gauge or thermocouple and have the signal converted.
Hi kau,
As you may already know, this type of adaptor consists of 3 precision resistors and the client's sensor makes the last arm of the full bridge.
So you are asking for a single design that covers all the common gauges of 120, 350, 700, or 1000-ohm?
E
I stopped to think about it and, for now, it would be better to test initially with 120 ohms to prove the efficiency of the project. I imagine it would be easier to develop this way.
Hi k,
The bridges I use are usually 350R or 1000R , the 1000R is the PT sensor type.
You must use precision resistors say 0.01% on the other 3 arms of the bridge,