A Wheatstone Bridge Strain Gauge Instrumentation Amplifier is explained in this video to measure the value of Tensile or Compressive Strain in a given structure on which Strain Gauge is applied. For more examples see: PhotoDiode Amplifier with Data Compression Explained ua-cam.com/video/hqrRx2ufAwg/v-deo.html Amplifier with -25 to 55 dB Attenuation-Gain range ua-cam.com/video/oyz6lTGd2Xo/v-deo.html Electronic Gain Control for Op Amp Amplifier ua-cam.com/video/NoNgQpbj77Y/v-deo.html Thermometer Circuit Design with Op Amp & BJT transistor ua-cam.com/video/55YsraFE0rg/v-deo.html PhotoDiode Amplifier with Op Amp and MOSFET Explained ua-cam.com/video/1c3EJ2d4pVI/v-deo.html Instrumentation Amplifier with Electronic Gain Control ua-cam.com/video/C4tghZ-q6Zs/v-deo.html Power Amplifier Design (Class A) with Transformer ua-cam.com/video/gKlJrqGqeCI/v-deo.html VCA Electronic Gain Control (Part 1): Voltage-Controlled Attenuator Overview ua-cam.com/video/cFzYZsPEtP0/v-deo.html Analog Multiplier Circuit ua-cam.com/video/VP53A2zpVMQ/v-deo.html Push-Pull Power Amplifier Design with Op Amp, Sziklai Darlington Transistors ua-cam.com/video/8BFzsi7-Vbs/v-deo.html Analog Vector Summer Circuit Design with Op Amp and BJT Transistors ua-cam.com/video/PIAsa0QNVns/v-deo.html Op Amp Analog Computer Differential Equation Solver ua-cam.com/video/ENq39EesfPw/v-deo.html Push-Pull Power Amplifier with Darlington Transistors ua-cam.com/video/866MYibo8yE/v-deo.html And the Analog Circuits Video playlist: ua-cam.com/play/PLrwXF7N522y4c7c-8KBjrwd7IyaZfWxyt.html I hope these Circuit design and analysis videos are interesting.
This actually includes just a nice design for a differential amplifier, but the difference is both the inputs are the pure high impedance opamp inputs. Normally you might need 3 opamp blocks to do this in a traditional instrumentation amplifier design. I quite like this circuit for many ideas. Only needing 2 opamps is extremely convenient for using many dual opamp packages. For instance I'm interested in using it for a low-ohm measurement device. It can measure across the resistance source with very high impedance, so not disturb the current flow, and doesn't need one of the measurement points to be at 0V.
Thanks Matt for your good summary of interesting features of this two-OpAmp Instrumentation Amplifier. Glad that this design is interesting and useful. Here are a few more videos about different features and types of instrumentation amplifiers: 1x, 10x, 100x, 1000x Switched-Gain Instrumentation Amplifier ua-cam.com/video/9-MLqyewXW8/v-deo.html Variable Gain Instrumentation Amplifier for designing Thermometer Current Source ua-cam.com/video/Ggf0yCaTTiY/v-deo.html Instrumentation Amplifier Explained ua-cam.com/video/Yq767et8BbY/v-deo.html Gain & CMRR of Instrumentation Amplifier Explained ua-cam.com/video/Bw29QjHHzGo/v-deo.html Instrumentation Amplifier design with Differential Instrumentation Amplifier with BJT transistor ua-cam.com/video/2xJpqfexsPg/v-deo.html I hope these videos are interesting as well. Thank you.
Thanks for your interest and question. Sure, an example video ua-cam.com/video/kk2c7Gk3nW4/v-deo.html discusses using Tempco resistor (temperature compensating resistor) with positive temperature coefficient (like a PTC thermistor). Here is also another circuit video example ua-cam.com/video/Qe3cY9JSzYg/v-deo.html that explains Analog Computer that Raises signal to Power of signal with Temperature Compensation using PTC thermal sensor.
Thanks for sharing your experience. Glad that this strain gauge instrumentation amplifier circuit video is useful. Also good point regarding using an extra strain gauge for temperature compensation. 👍
There are some strain gauges with the entire bridge built-in using two pairs of otherwise identical perpendicular cells in mirrored inverse arrangement on the same substrate to form the whole bridge. That doubles sensitivity while taking care of temperature compensation and resistance matching. Of course, you can only use those when you know for certain there won't be any strain in the perpendicular direction large enough to meaningfully interfere with the bridge's two reference gauges/resistors.
@@teardowndan5364 Good points regarding integrated Dual Strain Gauge and Wheatstone Bridge sensors. Thanks for sharing your thoughts and your interest in this video.
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A Wheatstone Bridge Strain Gauge Instrumentation Amplifier is explained in this video to measure the value of Tensile or Compressive Strain in a given structure on which Strain Gauge is applied. For more examples see:
PhotoDiode Amplifier with Data Compression Explained ua-cam.com/video/hqrRx2ufAwg/v-deo.html
Amplifier with -25 to 55 dB Attenuation-Gain range ua-cam.com/video/oyz6lTGd2Xo/v-deo.html
Electronic Gain Control for Op Amp Amplifier ua-cam.com/video/NoNgQpbj77Y/v-deo.html
Thermometer Circuit Design with Op Amp & BJT transistor ua-cam.com/video/55YsraFE0rg/v-deo.html
PhotoDiode Amplifier with Op Amp and MOSFET Explained ua-cam.com/video/1c3EJ2d4pVI/v-deo.html
Instrumentation Amplifier with Electronic Gain Control ua-cam.com/video/C4tghZ-q6Zs/v-deo.html
Power Amplifier Design (Class A) with Transformer ua-cam.com/video/gKlJrqGqeCI/v-deo.html
VCA Electronic Gain Control (Part 1): Voltage-Controlled Attenuator Overview ua-cam.com/video/cFzYZsPEtP0/v-deo.html
Analog Multiplier Circuit ua-cam.com/video/VP53A2zpVMQ/v-deo.html
Push-Pull Power Amplifier Design with Op Amp, Sziklai Darlington Transistors ua-cam.com/video/8BFzsi7-Vbs/v-deo.html
Analog Vector Summer Circuit Design with Op Amp and BJT Transistors ua-cam.com/video/PIAsa0QNVns/v-deo.html
Op Amp Analog Computer Differential Equation Solver ua-cam.com/video/ENq39EesfPw/v-deo.html
Push-Pull Power Amplifier with Darlington Transistors ua-cam.com/video/866MYibo8yE/v-deo.html
And the Analog Circuits Video playlist: ua-cam.com/play/PLrwXF7N522y4c7c-8KBjrwd7IyaZfWxyt.html I hope these Circuit design and analysis videos are interesting.
This actually includes just a nice design for a differential amplifier, but the difference is both the inputs are the pure high impedance opamp inputs. Normally you might need 3 opamp blocks to do this in a traditional instrumentation amplifier design. I quite like this circuit for many ideas. Only needing 2 opamps is extremely convenient for using many dual opamp packages. For instance I'm interested in using it for a low-ohm measurement device. It can measure across the resistance source with very high impedance, so not disturb the current flow, and doesn't need one of the measurement points to be at 0V.
Thanks Matt for your good summary of interesting features of this two-OpAmp Instrumentation Amplifier. Glad that this design is interesting and useful. Here are a few more videos about different features and types of instrumentation amplifiers: 1x, 10x, 100x, 1000x Switched-Gain Instrumentation Amplifier ua-cam.com/video/9-MLqyewXW8/v-deo.html
Variable Gain Instrumentation Amplifier for designing Thermometer Current Source ua-cam.com/video/Ggf0yCaTTiY/v-deo.html
Instrumentation Amplifier Explained ua-cam.com/video/Yq767et8BbY/v-deo.html
Gain & CMRR of Instrumentation Amplifier Explained ua-cam.com/video/Bw29QjHHzGo/v-deo.html
Instrumentation Amplifier design with Differential Instrumentation Amplifier with BJT transistor ua-cam.com/video/2xJpqfexsPg/v-deo.html
I hope these videos are interesting as well. Thank you.
How about some pt100 sensor circirts?Looking forward to seeing them.
Thanks for your interest and question. Sure, an example video ua-cam.com/video/kk2c7Gk3nW4/v-deo.html discusses using Tempco resistor (temperature compensating resistor) with positive temperature coefficient (like a PTC thermistor). Here is also another circuit video example ua-cam.com/video/Qe3cY9JSzYg/v-deo.html that explains Analog Computer that Raises signal to Power of signal with Temperature Compensation using PTC thermal sensor.
Used many times. Sometimes adding an extra strain gauge in the other leg of the bridge to compensate for temperature drift.
Thanks for sharing your experience. Glad that this strain gauge instrumentation amplifier circuit video is useful. Also good point regarding using an extra strain gauge for temperature compensation. 👍
There are some strain gauges with the entire bridge built-in using two pairs of otherwise identical perpendicular cells in mirrored inverse arrangement on the same substrate to form the whole bridge. That doubles sensitivity while taking care of temperature compensation and resistance matching. Of course, you can only use those when you know for certain there won't be any strain in the perpendicular direction large enough to meaningfully interfere with the bridge's two reference gauges/resistors.
@@teardowndan5364 Good points regarding integrated Dual Strain Gauge and Wheatstone Bridge sensors. Thanks for sharing your thoughts and your interest in this video.
thinkyou
You are welcome. Glad that you liked this strain gauge instrumentation amplifier circuit video.