lesson22 - Lesson 22 Op-Amps #7 (Section 4-6) (CLO 4-3)...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Lesson 22 Op-Amps #7 (Section 4-6) (CLO 4-3) This last lesson on Op-Amps focuses on designing Instrumentation Systems with passive transducers. Inpu t T ransducer Ou tpu t T ransducer K Gain B ias, b + + As mentioned previously, passive transducers require an external source to produce a voltage or current that is proportional to the physical parameter being measured. Photo-resistors, thermistors, strain gages, and rotation sensors are but a few of the passive transducers that use a variance in resistance to sense a physical parameter. There are two ways to apply an external source to a passive transducer. The first is using a simple voltage divider. This technique is useful when the accuracy of the sensor is not too critical and the change in parameter value is significant, such as photo-resistors, thermistors, or rotational devices, such as potentiometers. The second approach is to use a bridge circuit. This technique allows for a very precise measurement of small changes in parameter values, such as...
View Full Document

This note was uploaded on 10/12/2010 for the course MAE 140 taught by Professor Mauriciodeoliveria during the Spring '08 term at UCSD.

Page1 / 2

lesson22 - Lesson 22 Op-Amps #7 (Section 4-6) (CLO 4-3)...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online