In your original post, complete the following:
Share an engineering (or other) application of an infinite series. Identify it in math notation, an image of a graph, or in a clear explanation in the context of the application. You do not need to explain the entire topic, only identify the infinite series within this application, and tell us some of what it helps to accomplish here. While the type of series expansion you discuss will likely be the same as some of your classmates, the application example you present should be unique.
Category: Electronic Engineering homework help
Create a problem similar to the one your classmate has created in their original post. Solve the problem you created following your classmates’ instructions. Show ALL of your work!
Create a problem similar to the one your classmate has created in their original post. Solve the problem you created following your classmates’ instructions. Show ALL of your work!
Create a problem similar to the one your classmate has created in their original post. Solve the problem you created following your classmates’ instructions. Show ALL of your work!
“Laser diodes can create lasting conditions when pumped with electrical current at the diode junctions.”
What “lasting conditions” are you referring to? What is “pumped” electrical current?
Here is an example of operational details explained at the technical level I am expecting from engineering students:
Laser diodes have an intrinsic (un-doped silicon or germanium) layer sandwiched in between the P and N doped regions. The boundaries between the intrinsic region and the P and N regions are reflective like a mirror.
When the electrons and holes recombine in the intrinsic region during forward current through the diode, the energy lost by that recombination is emitted in the form of a photon. These photons collide with other incoming electrons, which produces even more photons. Each emitted photon bounces back and forth between the two reflective boundaries, which concentrates and guides them until they emerge as coherent light. A lens further focuses the beam.
Transistor biasing is critical in an amplifier to make sure that the transistor operates in a stable state without distortion of the signal. Different bias configurations are used for different applications depending on how you want the amplifier to operate. One of the easiest to implement is base biasing, what are some of the issues with base biasing?
answer the following:
Why is emitter bias more stable than base bias?
Explain why the base bias Q-point changes with temperature.
How does emitter-feedback bias improve on base bias?
1. Light emission – a Light-emitting diode is something that we are very familiar with, more commonly referred to as an “LED.” LED’s are used in many applications and are becoming more and more popular due to their efficiency and longevity. “A typical LED for lighting can deliver 50–60 lumens per watt, which is approximately five times greater efficiency than a standard incandescent bulb (Thomas L Floyd).” When the LED is in forward bias, electrons that combine with holes in p-type materials coming from the n-type materials. Once recombination takes place an energy is released in the form of photons. A semiconductive material is what allows the photons to be projected as visible light.
2. A phototransistor is similar to a Bipolar Junction Transistor (BJT) except the base currents are generated from two different sources. The base current in a BJT is produced by a voltage source while the phototransistors come from a light source. Phototransistors can be found in punch card readers, counting systems, and even in light controlling/detection systems. The phototransistor operates dependent on the level of radiation detected in form of light, and not just any light source but only those within a certain range of wavelengths.
References:
Floyd, T. L. (2017). Electronic Devices (Conventional Current Version) (10th ed.). Pearson Education (US). https://ecpi.vitalsource.com/books/9780134414553
Links to an external site.
Roshni Y (2023) What is a Phototransistor? Definition, Construction, Working, Characteristics Curve of Phototransistor – Electronics Desk
Transistor biasing is critical in an amplifier to make sure that the transistor operates in a stable state without distortion of the signal. Different bias configurations are used for different applications depending on how you want the amplifier to operate. One of the easiest to implement is base biasing, what are some of the issues with base biasing?
answer the following:
Why is emitter bias more stable than base bias?
Explain why the base bias Q-point changes with temperature.
How does emitter-feedback bias improve on base bias?
“Laser diodes can create lasting conditions when pumped with electrical current at the diode junctions.”
What “lasting conditions” are you referring to? What is “pumped” electrical current?
Here is an example of operational details explained at the technical level I am expecting from engineering students:
Laser diodes have an intrinsic (un-doped silicon or germanium) layer sandwiched in between the P and N doped regions. The boundaries between the intrinsic region and the P and N regions are reflective like a mirror.
When the electrons and holes recombine in the intrinsic region during forward current through the diode, the energy lost by that recombination is emitted in the form of a photon. These photons collide with other incoming electrons, which produces even more photons. Each emitted photon bounces back and forth between the two reflective boundaries, which concentrates and guides them until they emerge as coherent light. A lens further focuses the beam.
1. Light emission – a Light-emitting diode is something that we are very familiar with, more commonly referred to as an “LED.” LED’s are used in many applications and are becoming more and more popular due to their efficiency and longevity. “A typical LED for lighting can deliver 50–60 lumens per watt, which is approximately five times greater efficiency than a standard incandescent bulb (Thomas L Floyd).” When the LED is in forward bias, electrons that combine with holes in p-type materials coming from the n-type materials. Once recombination takes place an energy is released in the form of photons. A semiconductive material is what allows the photons to be projected as visible light.
2. A phototransistor is similar to a Bipolar Junction Transistor (BJT) except the base currents are generated from two different sources. The base current in a BJT is produced by a voltage source while the phototransistors come from a light source. Phototransistors can be found in punch card readers, counting systems, and even in light controlling/detection systems. The phototransistor operates dependent on the level of radiation detected in form of light, and not just any light source but only those within a certain range of wavelengths.
References:
Floyd, T. L. (2017). Electronic Devices (Conventional Current Version) (10th ed.). Pearson Education (US). https://ecpi.vitalsource.com/books/9780134414553
Links to an external site.
Roshni Y (2023) What is a Phototransistor? Definition, Construction, Working, Characteristics Curve of Phototransistor – Electronics Desk