Jusrrun

1. Peak

신호(노이즈)의 피크 진폭을 측정합니다. 충전 시 매우 짧은 시정수와 방전 시 매우 긴 시정수를 사용하여 피크 값을 표시합니다. 펄스 반복 주파수(PRF)와 무관하며 EMI 테스트 수신기의 입력에 공급되는 신호의 최대 진폭을 출력합니다.

2. QPK(Quasi Peak)

Quasi Peak Detector는 PRF(반복률)에 따라 신호의 가중치를 측정하며 특정 시간 내에 더 많은 펄스가 나타날수록 뼤 판독값이 높아집니다.  충전 및 방전 시상수와 미터 시상수는 CISPR 16-1-1에 설명된 대로 QPK-펄스 가중 특성으로 이어집니다.

3. 평균 검출기(AVG) AVG 검출기는 펄스 반복 주파수에 비례하여 나타냅니다

SMPS

https://ko.wikipedia.org/wiki/%EC%8A%A4%EC%9C%84%EC%B9%98_%EB%AA%A8%EB%93%9C_%ED%8C%8C%EC%9B%8C_%EC%84%9C%ED%94%8C%EB%9D%BC%EC%9D%B4

SMPS (Switching Mode Power Supply)는 전력용 MOSFET 등 반도체 소자를 스위치로 사용하여

AC전압을 DC전압으로 변환하는 장치이다.

SMPS 블록도

전원입력 -> EMI 필터 -> 정류 -> 트랜스(1차) -> 트랜스(2차) -> 정류 -> 출력

2차측 전압 검출 -> OVP(Over Voltage Protection) or OCP(Over Current Protection)

SMPS EMI 필터

SMPS에서 발생하는 노이즈는 도선을 타고 전달하는 전도 노이즈 공기를 통해 방사되는

방사 노이즈로 구분된다. 세부적은 구분으로는 CM 노이즈 와 DM 노이즈로 구분되며,

EMI 필터는 이러한 DM노이즈와 CM노이즈 제거용으로 사용된다.

정류 및 평활

브릿지다이오드 + 평활 캡을 이용하여 AC파형을 평활한다.

정류용 브리지 다이오드 선정 방법

Bridge Diode는 2개씩 짝지어서 ON / OFF 되며 OFF시 다이오드에 역방향 전압이 인가된다.

따라서, 역방향으로 얼마만큼의 전압을 견딜 수 있는지가 중요한 요소이다. 

다이오드가 역방향으로 견딜 수 있는 최대 전압 = V(RRM)

최대전압을 기준으로 하므로 AC 220V의 PEAK 값 = V(RMS) X2  = 220 X2  = 311V

이때 전압마진을 고려하여 일반적으로 600V 정도에 정격전압을 가지는 다이오드를 선정한다.

1. BZ

Conditional Branch with Zero Flag (Z = 1)

When Z = 1, data is branched to the address specified by the operand

When Z = 0, no processing is carried out and the subsequent instruction is executed

- 만약 (Z = 1) 인 경우 분기(Branch)하며,  그렇지 않을 경우 다음에 오는 명령어를 실행한다

2. BR

Unconditional Branch

This is an instruction to branch unconditionally

- 조건없이 무조건 해당 주소로 분기

3. BC

Conditional Branch with Carry Flag (CY = 1)

When CY = 1, data is branched to the address specified by the operand.

When CY = 0, no processing is carried out and the subsequent instruction is executed.

- 만약 (CY = 1) 인 경우 분기(Branch)하며, 그렇지 않을 경우 다음에 오는 명령어를 실행한다

4.BT

Conditional Branch by Bit Test (Byte Data Bit = 1)

If the 1st operand (bit) contents have been set (1), data is branched to the address specified by the 2nd operand.

만약 해당 비트가 1 인 경우 분기(Branch)하며, 그렇지 않을 경우 다음에 오는 명령어를 실행한다

Ex   BT FE47H.3, $55CH ;    When bit 3 at address FE47H is 1,   data is branched to 055CH 

Q. Tell me about the big holiday in Korean like New Year day. What do you do? What do you eat?

(설날에 무엇을 하며, 무엇을 먹는지?)

Korea has two big holidays such as[like] new years and 추석 and 추석 is a thanks giving day of Korean.

On these holidays, all roads are very crowded because everyone is back home town.

also, some people wear 한복 which is Korea traditional costume.

At the hometown, people pay respect their ancestors by visit their graves.

On new year, people eat rice cake soup and on 추석, people eat steamed rice cake.

Also, on 추석, people make a wish to the full moon in the morning.

Q. Tell me about public transportation in Korean as much as details?

(한국에 교통 시스템에 대하여 말해줘)

There are many types of public transportation in Korea such as bus, subway and train and  all transportation is well

developed and convenient.

First of all, the subway is most used for people because it can easy to get to.

Also, it is consist of 9 lines and these lines cover all of Seoul which is capital of Korea.

Second of all, all of public transportation provide English, Japanese and chinses language announcement

so tourist can get to their destination easily.

Finally, all of public transportation is relatively inexpensive compared to other country because government

encourage use public transportation.

Q. Tell me about the past, present and future transportation and how it affects you.

(과거, 현재, 미래의 교통 시스템 및 어떤 영향을 주는지?)

In the past, the public transportation system was not well.

For example, it was hard to go a long way and it took a long time.

However, the public transportation system developed well at now so it is not hard to go a long way.

For example, under the ground, there are six subway lines in Korea and there is a high speed train

Which can run over 300 kilometer per hour. Also recently, all of transportation system is computerizing so people

Can check the departure and arrival of the transportation

Q. I would like to ask you to describe a healthy person. What makes a person healthy? Why do you think that way?

(건강한 사람 묘사)

To stay health, I go to the gym near my home every day.

In the gym, there are many muscular who have broad shoulder, powerful arms but at the same time they has slim figure.

As I know, they spend over two hours every day for body building and they eat chicken breast[브레스트] and boiled egg.

Also, they said the chicken breast and boiled egg is high protein foods and it helps to make muscular body.

Q. Where you live? Describe your place as much as details.

(어디에 살아? 사는 곳에 대하여 자세하게 설명해줘)

Let me tell you about my home. The place that I live is an apartment complex in Suwon city.

In my home, l live with my mother, my father and my younger brother. My home has four rooms, two bathrooms and a

kitchen. In my room, there is a single size bed, a laptops on the desk and a small Screen TV.

Next to the wall, there is a book shelf which is filled a technical books that related my major.

My most favorite spot in my room is the small sofa chair in front of the window. The sofa chair looks pretty old

But very comfortable when I am sit down. So before going to bed, I usually rest on the sofa chair. Also, through the

window,  I can see the night view.

Q. Have you ever moved? When? Where?

(이사 해 본적 있어? 언제? 어디로?)

Two years ago, I moved to Suwon city from Anshan city The reason why I moved to Suwon city us that I attend in university

and it is located in Suwon city. Before moving to Suwon city, it takes one hour to get to my school by bus. After moving, I

can get to my school just half hour.

When I moved to my home, my school friends helped me to move the furniture, luggage.

Also, they helped to decorate each room and paint the wall paper. Thanks to my friends, I had successfully completed

Movement. After that, as a token of appreciation, I took my friends out to dinner.

Q. what orientation did you receive during your freshman year? What is the configuration?

(신입생 때 받은 오리엔테이션은? 구성은?)

When I was a freshman, I attended in the freshman orientation for the first time. The orientation consisted of three parts

and it  Was held at library. On the first part, the president of the university introduced the orientation, facilities and

urriculum of  Department. On the second part, I met with school seniors and professors.

At that moment I joined the study club which is making Electronics product and small robot.

Lastly, I looked around school facilities and department. Then, I drank a cup of coffee with my school seniors.

Q What courses did you take last? How did it go?

(가장 마지막에 수강한 과목은? 어떻게 진행되었어?)

Last semester, I took the robotics engineering and the lessons were conducted on a team-by-team basis.

During this course, my team made a small smart robot which can walk along the black line and controlled by smart phone

and  Computer.

Thanks to the smart robot, my team was award for innovation. My team consisted of five members and my role was

A software engineer and team leader. As a team leader, I made an announcement in front of the professor and I got a

good  Hands from professor.

Q You are going to register at the gym. Ask three or four questions to sales clerk?

(체육관에 등록하려고 합니다. 점원에게 3~4가지 전화로 질문을 해보세요)

Hello. Are you person who is charge of reservation?

I am calling because I want to register this gym for three months. Before I register this gym, I have questions for you.

First of all, how much is the gym charge?

Second of all, second of all, if I register this gym, I will use my car so is there a sufficient parking lot?

lastly, I plan to stop by your gym on today because I want to look around your gym before I register so can you give me

the gym address? Thanks for your help.

Q .You want to buy clothes. Ask three or four questions to the clothing store clerk

(옷을 사려고 해. 옷 가게 점원에게 3~4가지 질문을 해봐)

Hello. Are you person who is in charge of selling?

I’m looking for a black and a white shirt. Before I see these clothes, I have some questions for you.

First of all, I have a 10% discount coupon issued by your other branch. Can I get a discount using it?

Second of all, would you recommend the white shirt which goes well with the black coat?

Lastly, I bring my car but I can't find the parking lot, please tell me where is the parking lot?

Q. You want to participate in team project. Ask three or four questions for team leader about the team.

(팀 프로젝트에 참여하려고 한다. 3~4가지 질문하기)

Hello. This is LEEJAEWOO speaking. Are you a team leader in an English study group?

I’m calling because I want to participate in your study group. Before I participate in your group I have some questions for

you.

First of all, how many team member are there now?

Second of all, what day we usually meet to study together? In my case I can’t participate on Friday because I have to do

Part time job. Lastly, what should I prepare for the first day? If there doesn’t need special preparations, I will prepare an

English script and print it out and take the scripts.

Q. Your house’s roof collapsed before the party. Call the repair man and then ask question for him.

(파티를 앞두고 지붕이 붕괴되었어. 수리공에게 전화해서 질문해봐)

Hello. Are you person who is a roof repairman? I am calling because there is a big hole on my house roof and

Rainwater is leaking in my home. Could you come to my house right now? There is a birthday party on today night

So I have to repair it right now. My home is 203, 103, Korean apartment complex.

If you don’t know my home, please wait in front of the Korean police Station I will pick you up.

Q. Please introduce me your most favorite classmate.

(너의 가장 친한 친구를 소개해줘)

Let me tell you about my most favorite classmate whose name is KIM JIYOUN.

When I was a freshman, I met her in mathematic class for the first time since then we got friendly.

The reason why we got friendly is that she like to jog and play the tennis like me. Also, she has sense of humor and make

hers  Friend funny and happy. In addition, we live in the same apartment complex so when the exam period, we go to the

local  Library together.

Q. Who is your favorite neighbor? What do you usually do when you meet?

(가장 친한 이웃을 소개해줘. 만나면 주로 무엇을 하는지 말해줘)

Let me introduce you about my most friendly neighbor whose name is KIM JIYOUN.

When I was middle school student, I met her in science academy for the first time. Since then we got friendly.

Also, attend in the same university so during exam period we go to the local library together.

When we meet, we often go to the delicious restaurant because our favorite food is similar.

Also, sometime we go to the movie theater together because she love to watch a comedy movie like me.

In addition, she has sense of humor and make hers Friend funny and happy.

Q. Please describe your major

(너에 전공에 대하여 얘기해줘)

Let me tell you about my major. I’m majoring in electronics and radio wave at KHU University.

The reason why I choose the major is that when I was a high school student I had the chance to attend in science camp

Since then I became interested in science. Next thing, I will tell you about details of my major. When I was a freshman

I took elementary course of my major such as physics, mathematic and chemistry. Thanks to these subject I was able to

Learn basic principles of electronics. Last semester I took wireless communication and image signal processing.

In the future, I will take semiconductor engineering. Through these subjects I can learn about technics used in practice

Lastly, using all subjects that I learned, I hope to work in Samsung electronics.