쉐도잉 연습: PCB 101 Academy - Learn how printed circuit boards are assembled - 영상으로 영어 말하기 배우기

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I am here at Roy Electronics in Northern Italy
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and I'm going to share with you now the PCB assembly
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process as it starts from the bareboard PCBs to the end customers.
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ProElectronics have implemented a very advanced
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Industry 4 .0 PCB assembly shop floor.
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As you can see, there are hardly any operators in this production floor because they have chosen to implement a very high level of automation.
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This is the shop floor of the future.
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Let's go have a look.
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The burr board goes into the laser marking machine.
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The machine marks a unique serial number which comes from the ERP
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and reports to the output file that the Valor IoT can then collect the data.
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The serial number will enable us to track this specific board and know exactly what happened to it.
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At ROI, the serial numbers are generated by the ERP and are unique to each PCB.
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The screen printer applies the paste through the stencil.
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Each job has a different stencil which is planned with Valor process preparation.
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It must be precise per product and per revision.
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At this station, we can expect a relatively high rate of defects.
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It is very sensitive to environment condition, temperature, humidity, time.
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This is the reason for many tests and inspections after this stage.
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With Valor material management, we can conduct stencil verification by scanning the stencil barcode and reporting the exact stencil and paste we have used.
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The solder paste inspection machine, referenced as SPI, tests the quality of the printer to verify
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that everything was printed according to the plan and there is paste only where it should be.
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The SPI will run the test program and report the findings in a file, including pass -fail as well as measurements.
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This data is later on collected by Valor IoT.
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Roy have three types of pick -and -place machines.
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A fast pick -and -place machine, a machine with a camera for small and subtle components when accuracy is highly important,
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and a very strong machine with high pressure for boards that require force in implementing its components.
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Having different pick -and -place machines is typical to many manufacturers.
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It allows for high accuracy and flexibility.
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Valor process preparation can help in generating the assembly programs.
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Valor IoT manufacturing connects to the pick and place machine and can collect data regarding machine utilization.
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Valor material management helps manage the material on the machine and replacement of material when it's consumed.
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At the visual inspection station, operators can validate that the correct components were placed on the board before continuing in the manufacturing process.
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Valor process preparation can create a documentation which will define for the operator what should be inspected at this stage.
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Here the soldering is done.
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The plan for the oven is referred to as an oven profile.
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The reflow oven is divided into several chambers.
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The speed through each chamber can be different, and each chamber can have a different temperature.
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Valo IoT Manufacturing connects to the reflow oven and receives information regarding the actual temperature and speed of the oven.
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At this station, we wish to ensure
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that each component was placed correctly in the right angle and that the soldering is good.
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Valor process preparation can help us prepare a test program so
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that the exact location where the pins contact the pads will be examined.
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At this point, the SMT process is complete.
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Following the SMT process, we have additional placement technologies such as through -hole and manual assembly.
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At the through -hole station at Roy, we can see that the through -hole components are placed manually on the PCB,
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but they are then soldered in a selective soldering oven.
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There are two methods which are used to perform electrical tests on the PCB.
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Bed of nails for high volume,
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which allows for shorter time of testing but requires expensive development of fixtures or flying probe for high mix small volume.
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It takes longer to program the flying probe and run the test but is much easier to handle new products.
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Valor process preparation can help plan the fixture of the bed
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of nail as well as generate a program for the flying probe machine.
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In addition, Valor IoT will collect data from the different testers including the different electrical measurement as well as the pass fail.
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All Valor manufacturing solutions have been integrated into the CamStar electronics suite.
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Data is sent to the MES, which now runs the entire process.
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For large BGA components, we need to check that the pins reach the right layer.
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These pins are usually behind the component and therefore cannot be tested with AOI machines.
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In this case, we use an x -ray to take an x -ray image of the PCB
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and make sure that the connectivity and the soldering is adequate.
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Now we can actually test the functionality of the completed product.
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The preference is always to find issues through the different processes
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and avoid finding defects at the last stage of the functional test.
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Here, mechanical parts are assembled manually or by a robot.
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At this point, the product assembly is complete.
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That's it.
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The product is ready to be delivered.
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We can package it and send it to the end customer.
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The PCB assembly process has been completed.
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Now that we've learned how PCBs are made, come and join us in leading this industry.
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Siemens.
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Ingenuity for life.

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추천 영상

이 레슨의 어휘와 말하기 포인트

이 말하기 레슨은 영상 “PCB 101 Academy - Learn how printed circuit boards are assembled”을(를) 바탕으로 합니다. 가장 자주 반복되는 단어는 다음과 같습니다: machine, process, pcb, valor, test. 이 영상에는 섀도잉할 문장 32개와 단어 904개가 있습니다. 말하는 구간의 길이는 6:13입니다. 화자는 분당 약 145단어의 일정한 속도로 말해서 섀도잉하기에 편한 속도입니다. 영어에서 가장 많이 쓰이는 3,000단어에 속하는 단어가 78%뿐이라 어휘가 어려운 편입니다.

이 영상의 핵심 어휘

영상에 나오는 익혀 둘 만한 단어 15개를 발음, 뜻과 함께 정리했습니다.

단어발음뜻
component 명사/kəmˈpoʊ.nənt/부분
oven 명사/ˈʌ.vn̩/오븐
preparation 명사/ˌpɹɛpəˈɹeɪʃ(ə)n/준비
collect 동사/ˈkɑlɪkt/수집하다
pasta 명사/ˈpɑ.stə/파스타
chamber 명사/ˈt͡ʃeɪ̯mbɚ/침실
operator 명사/ˈɑpəˌɹeɪtɚ/조작자, 오퍼레이터
pin 명사/pɪn/핀
electronics 명사/ɪˌlɛkˈtɹɑ.nɪks/전자공학, 일렉트로닉스
inspection 명사/ɪnˈspɛkʃən/검사
connect 동사/kəˈnɛkt/잇다, 연결하다
nail 명사/neɪl/손톱, 발톱
measurement 명사/ˈmɛʒ.ə.mənt/측정
printer 명사/ˈpɹɪntɚ/인쇄자
defect 명사/ˈdiːfɛkt/결함

이 영상의 문법

화자가 가장 많이 쓰는 문형을 영상 속 실제 표현과 함께 정리했습니다.

문형영상 속 표현
수동태 be + 과거분사 — 누가 하는지보다 무슨 일이 일어나는지에 초점are generated · is planned · was printed
현재완료 have/has + 과거분사 — 과거의 일이 지금도 관련이 있을 때have implemented · have chosen · have been integrated
관계절 who / which + 절 — 사람이나 사물에 대한 추가 정보stencil which is · documentation which will · methods which are

주의할 발음

화자는 I'm, they're, we've 같은 축약형과 약화된 형태를 3번 사용합니다. 들리는 대로 짧게 발음하세요.

  • “sh”와 “zh” 소리: preparation /ˌpɹɛpəˈɹeɪʃ(ə)n/, inspection /ɪnˈspɛkʃən/, measurement /ˈmɛʒ.ə.mənt/, documentation /ˌdɑkjəmɛnˈteɪʃən/, revision /ɹəˈvɪʒ.ən/
  • 긴 단어 — 강세 위치에 주의: preparation /ˌpɹɛpəˈɹeɪʃ(ə)n/, operator /ˈɑpəˌɹeɪtɚ/, electronics /ɪˌlɛkˈtɹɑ.nɪks/, electrical /ɪˈlɛktɹɪkəl/, accuracy /ˈæk.jɚ.ə.si/

한국어 화자가 어려워하는 소리:

  • /f/ — ㅍ(/p/)으로 바꾸지 말고 윗니를 아랫입술에 대기: defect /ˈdiːfɛkt/, fixture /ˈfɪks.t͡ʃə/, refer /ɹɪˈfɜː/, define /dɪˈfaɪn/, functional /ˈfʌŋkt͡ʃənəl/
  • /v/ — ㅂ(/b/)과 구별하기: oven /ˈʌ.vn̩/, sensitive /ˈsɛn.sɪt.ɪv/, divide /dɪˈvaɪd/, selective /səˈlɛktɪv/, verify /ˈvɛɹɪfaɪ/
  • /z/ — ㅈ이 아니라 성대를 울리는 /s/: laser /ˈleɪzɚ/, examine /ɪɡˈzæmɪn/, siemens /ˈsiːmənz/

이 영상으로 연습하는 방법

  1. 먼저 말하지 않고 영상을 끝까지 듣고 모르는 단어를 적어 둡니다.
  2. 보통 속도로 한 문장씩 섀도잉하고, 화자의 리듬과 맞을 때까지 반복합니다.
  3. 자신의 목소리를 녹음해 원본과 비교하고, component, oven, preparation 같은 단어에 특히 주의합니다.

쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법

쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.

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