lecture 5 signalconditioning acbridge
DESCRIPTION
electric instrumentation lecture 5 presentation slid. enjoy readingTRANSCRIPT
![Page 1: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/1.jpg)
Signal Conditioning for Electronic Instrumentation
AC Bridges
1
MCT 3332 : Instrumentation and Measurements
Dr. Hazlina Md YusofDepartment of Mechatronics EngineeringInternational Islamic University Malaysia
![Page 2: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/2.jpg)
Analog Signal ConditioningAC Bridges
2
• Used to measure inductance and capacitances
• Applied in communication systems and complex electronic circuits
- Used for shifting phase, providing feedback paths for oscillators or amplifiers, filtering out undesired signals and measuring the frequency of audio signals
• Operates on balanced condition - Reactance and resistive components are balanced
![Page 3: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/3.jpg)
Z1
Analog Signal ConditioningAC Bridges
3
![Page 4: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/4.jpg)
Analog Signal ConditioningAC Bridges
4
![Page 5: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/5.jpg)
Analog Signal ConditioningAC Bridges
Example 7
An AC bridge is in balance with the following constants: arm AB, R = 200 Ω in series with L = 15.9 mH R; arm BC, R = 300 Ω in series with C = 0.265 μF; arm CD, unknown; arm DA, = 450 Ω. The oscillator frequency is 1 kHz. Find the constants of arm CD.
5
?
![Page 6: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/6.jpg)
Analog Signal ConditioningAC Bridges
Capacitance Comparison Bridge
6
-
- -j j
a.k.a. Similar Angle Bridge
j
![Page 7: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/7.jpg)
Capacitance Comparison BridgeExample 8 A similar angle bridge is used to measure a
capacitive impedance at a frequency of 2kHz. The bridge constant at balance areC3 =100F R1=10k
R2=50k R3=100k
Find the equivalent series circuit of the unknown impedance
7
![Page 8: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/8.jpg)
8
Analog Signal ConditioningAC Bridges
Inductance Comparison Bridge
![Page 9: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/9.jpg)
9
Analog Signal ConditioningAC BridgesMaxwell Bridge
Quality factor, Q = ( Lx ) / Rx = C1 R1
![Page 10: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/10.jpg)
10
Analog Signal ConditioningAC Bridges Hay Bridge
![Page 11: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/11.jpg)
11
Analog Signal ConditioningAC Bridges Hay Bridge
![Page 12: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/12.jpg)
12
Analog Signal ConditioningAC BridgesSchering Bridge
![Page 13: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/13.jpg)
13
Analog Signal ConditioningAC BridgesSchering Bridge
![Page 14: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/14.jpg)
14
Analog Signal ConditioningAC BridgesWien Bridge
![Page 15: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/15.jpg)
15
Analog Signal ConditioningAC Bridges Wagner Ground
![Page 16: Lecture 5 SignalConditioning ACBRIDGE](https://reader036.vdocuments.net/reader036/viewer/2022062323/5695d4f91a28ab9b02a388e8/html5/thumbnails/16.jpg)
16
Analog Signal ConditioningAC Bridges
ENDS