Pages: 1 [2]   Go Down
Author Topic: Measuring 3- Wire Strain Gauge  (Read 3584 times)
0 Members and 1 Guest are viewing this topic.
United Kingdom
Offline Offline
Tesla Member
Karma: 227
Posts: 6639
Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

*If* the strain gauges are of the sort where one element increases its resistance and the other decreases, then to use all 4 I would connect them like this. Let the 3 terminals of each one be called C (common), I (increase) and D (decrease). Connect them in a ring using the I pins and D pins so that each I pin is connected to another I pin and each D pin is connected to another D pin. Then use the four C pins as the bridge inputs and outputs.

What this gives you is a bridge in which one of the resistors is made up of two I elements in series, its two neigbours are each made up of two D elements in series, and the diagonally opposite resistor is also made up of two I elements in series.


Formal verification of safety-critical software, software development, and electronic design and prototyping. See Please do not ask for unpaid help via PM, use the forum.

Pages: 1 [2]   Go Up
Jump to: