Question

use of photodiode in rpm measurement

use of photodiode in rpm measurement

Engineering   Electrical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Photodidoe in the Rpm instrument is used to measure the speed of the motor.

for example consider Dc motor ,Dc motor has white and blsck surface ,reflecting and non non reflecting surfaces.

When the light strikes black surface ,PN diode doesnot receive photon and when light strikes the white surface ,PN didoe receives the Photon. On receiving light from white surface comparator give input pulseto uc denoting one revolution.

No receive of light from back surface,comparator gives low pulse to uc denoting it is rotating

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
What is the function of an operational amplifier in the detector circuit for a photodiode or...
What is the function of an operational amplifier in the detector circuit for a photodiode or phototube?
Why might a photon arriving at a photodiode not give rise to photocurrent?
Why might a photon arriving at a photodiode not give rise to photocurrent?
What is a main difference between SiPM and Avalanche Photodiode (APD)?
What is a main difference between SiPM and Avalanche Photodiode (APD)?
In the light of these dual system of measurement, and in some countries the use of...
In the light of these dual system of measurement, and in some countries the use of mixed measurement systems, should ALL countries in the world be mandated to switch to one measurement system, be it metric or imperial measurement system? If not. Why not?
The use of measurement is common in all our lives, every day. Measurement is also part...
The use of measurement is common in all our lives, every day. Measurement is also part of national and world travel. It is often interesting to determine the measurement of landmark items. For example, your textbook described the Crazy Horse monument that is near Mount Rushmore. Pick three national or international landmarks and research to find their measurement (can be height, weight, etc.). One example might be the height of the Eiffel Tower in Paris; another could be the weight...
1）Suggest reasons for and against the use of hydrometry as a measurement of TSS to follow...
1）Suggest reasons for and against the use of hydrometry as a measurement of TSS to follow the progress of the primary fermentation of a wine.Suggest reasons for and against the use of hydrometry as a measurement of TSS to follow the progress of the primary fermentation of a wine. 2）Why is hydrometry a perfectly acceptable method for the direct measurement of the alcohol concentration of wine in the distillation/hydrometry method?
Compare and contrast the use of an LVDT and a resistance-based potentiometer for position measurement.
Compare and contrast the use of an LVDT and a resistance-based potentiometer for position measurement.
Why is it important for software developers to make use of measurement to guide their work?
Why is it important for software developers to make use of measurement to guide their work?
Power supply voltage for the photodiode Resistor value (Vsensor) = 120 V Output voltages over black...
Power supply voltage for the photodiode Resistor value (Vsensor) = 120 V Output voltages over black (Vsensor) Output voltage over white (Vsensor) 1 V 3 KΩ 33 mV 120 mV b. Amplifier subcircuit. Vsensor has to be amplified to obtain the specified sensor output of 3.3 V when the photodiode is over the white background. Calculate the gain required to achieve this. Explain whether this requires an inverting or non-inverting amplifier. Calculate the resistor values to achieve this gain. Explain...
What is the significance of tolerance value in measuring devices? Use a device for a measurement...
What is the significance of tolerance value in measuring devices? Use a device for a measurement as an example to explain your answer.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT