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เข้าร่วมเมื่อ 15 ม.ค. 2018
Learning, teaching, and practicing engineering is one of my great passions. As an electrical and computer engineering professor at the University of the Pacific, this channel is about supporting the wonderful students at Pacific (pacific.edu/engineering). However, knowledge should not exists in a vacuum. If you find this content useful in your engineering pursuits, please subscribe.
AC Circuit Analysis: Mesh-Current Method
This video is about AC Circuit Analysis. I solve a Mesh-Current Method problem.
มุมมอง: 1 307
วีดีโอ
AC Circuits: Node-Voltage Method
มุมมอง 3.5K4 ปีที่แล้ว
This video is about AC Circuit Analysis. Specifically, an example of the Node-Voltage Method.
Capacitor and Inductor Combinations
มุมมอง 7304 ปีที่แล้ว
This video is about capacitor and inductor combinations in series and parallel.
Superposition Principle
มุมมอง 6654 ปีที่แล้ว
In this video, the principle of superposition is described and applied for a linear resistive circuit.
Source Transformations
มุมมอง 5434 ปีที่แล้ว
In this video, I cover the mathematics of doing voltage and current source transformations. This technique is then used to simplify a resistive circuit and solve for relevant quantities such as current, voltage and power.
Circuit Elements
มุมมอง 6454 ปีที่แล้ว
In this video, I introduce several basic circuit elements such as the resistor, capacitor, and inductor. I also discuss the symbols for independent and dependent voltage and current sources.
Common-Source Transistor Example
มุมมอง 8194 ปีที่แล้ว
In this video, I perform an analysis of a common-source amplifier with a 4-resistor single power supply biasing setup.
Electronics: Common-Source and Common-Emitter Amplifiers
มุมมอง 3.2K4 ปีที่แล้ว
In this video you'll learn about Common-Source and Common-Emitter Transistor Amplifiers. I perform an example analysis of a 4-resistor biasing circuit to find its input resistance and voltage gain.
Ambipolar Transport
มุมมอง 6K4 ปีที่แล้ว
In this video, I discuss the concept of Ambipolar transport of excess carriers in a semiconductor. The transport equation is derived from flux continuity equations. An example problem is then solved for a simplified system.
Small Signal Model Example
มุมมอง 19K4 ปีที่แล้ว
In this video, I solve a Small Signal Model Example problem for transistor amplifiers. In doing so, the process of using the small signal model is explained.
Transistor Small Signal Models
มุมมอง 2.2K4 ปีที่แล้ว
This video is about the transistor Small Signal Models. These models are devleoped mathematically along with the determining the small signal conditions necessary for using these circuit models.
Transistor Amplifier Basics
มุมมอง 9104 ปีที่แล้ว
This video is about the basics of transistor amplifier circuits. We examine simple MOSFET and BJT circuits, finding expressions for the gain. We also look at the voltage transfer characteristics of each.
Introduction to Electrical Amplification
มุมมอง 9504 ปีที่แล้ว
This video is an Introduction to Electrical Signal Amplification. The process of signal amplification is described along with derivation of power and gain equations for a generic amplifier. The video concludes with a discussion of amplifier circuit models.
Carrier Generation and Recombination
มุมมอง 4.1K4 ปีที่แล้ว
This video is about carrier generation and recombination in a semiconductor. We describe the process of excess carriers and derive an expression for recombination rate and excess carriers in time.
MOSFET Circuits in DC, Part 3
มุมมอง 8K4 ปีที่แล้ว
This video is the third part in solving MOSFET circuits in DC. Here we solve a single supply circuit in triode mode.
MOSFET Current in Triode and Saturation
มุมมอง 13K4 ปีที่แล้ว
MOSFET Current in Triode and Saturation
Thank you, I was confused on what to do when there was a self biasing resistor.
Is it not the capacitors treated as open circuit in small signal model?
Thanks 😊👍🙏💯
Great video, cheers!
Can you please edit this video. You made a mistake at 3:06.
Much appreciated Sir 😊 MOSFET drain feedback bias One minute A: Id=k(vd-vt)^2 15-vd/15=0.25(vd-1.5)^2 Too lazy to solve the value of ax2+bx+c=0 vd gm=2k(vgs-vt)^2=2k*(id/k)^1/2=2*(k*id)^1/2 (Id/k)^1/2=vgs-vt B: vo=-u*vi*(rl'/ro+rl') vo/vi=41.2*(3.75/(68.75+3.75))=154.5/71.5=-21.6v/v C: Rin=rg/(1-A)=10/22.6=3.164M ohm Ro=ro//rd//RL//(rg/(1-1/av))=~
What really is the Va? I dont see where that is or what it means 😢
I think it's like lambda = 0.02?
inverse of lamda@@Emma-dd1fc
@@Emma-dd1fc Va = 1/lambda
Va is the Early voltage. Analyzing the ID and VDE characteristic graph, the point of intersection from all the relationship curves correspond to some Early trans-conductance which is ID/VA where VA is the value of VDE at the point of intersection.
Wow! Thanks for this 🙏
in the small signal model you are missing the Rs, you seem to directly connect the source to ground.
this is incredible video, hope you can make more video of solid state device.
Thank you, Finally clicked for me.
I have only one comment on the beautiful presentation (thanks!): In the first few minutes the instructor begins by saying: when photons arrive then we measure a current. Is flawless. But then he tells me that positive charges move together with negative ones. But this does NOT generate current !!! I also have some questions: it is said that they move together. Good. Then we arrive at the result that the mobility is that of minority charges. Great, but mobility is a positive number. Then: what is the direction, particularly in the case I create positive and negative charges in an intrinsic semiconductor? (Where the concept of minority charges makes no sense). That is: does ambipolar transport only concern doped semiconductors in the presence of an external electric field?
Good day sir, is there any chance you may have more videos on advanced electronics? This playlist really helped me during the first half of my semester.
The video is helpful
At the “3:06” mark into the video, should “j2” times “1/2” be “j” instead of “1”
what a fantastic Video, thanks for this math explain ,really extremely helpful 🥰
Loved the vid, super helpful
I like your channel please send me your watsapp number or group link.for help
Fantastic video, thank you for the information!
What will happen to the ambipolar mobility at high level injection? Since Δn=Δp, will it be zero? But how does this exaplin the carrier flow if the mobility is zero? PS: At 8:56 you didn't write the derivative on left side of the equation.