Shadowing Practice: PCB Assembly: Low Volume vs. High Volume - Learn English Speaking with Video

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One of the first questions to ask when evaluating a PCB assembly contract manufacturer is can they handle the expected production volume?
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To answer that, we first have to understand what we mean by low, mid, and high volumes.
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For this video, we'll leave aside very high -volume consumer electronics,
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and consider more typical volumes done by US -based contract manufacturers like Z -Axis.
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Buyers of SMT printed circuit boards often consider volume in terms of boards per year, but that doesn't tell us what we need to know.
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A contract manufacturer thinks in terms of numbers of parts to be placed.
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This is
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because the speed of the SMT pick -and -place machines is
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generally the limiting factor in how fast a job can be completed.
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Consider this example.
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For this job, we need to produce 50 boards.
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For this job, we need to produce 1 ,000.
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Which is higher volume?
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This board has 1 ,800 parts, so that's a total of 90 ,000 parts in the job.
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This one has 40 parts per board for a total of 40 ,000 parts.
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We'd consider it to be a lower volume job even though it's 20 times more boards.
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One reason the number of boards doesn't give you the true picture of volume is panelization.
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For most PCB assemblies, the layout designer fits multiple boards in an array on a single substrate or panel.
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The entire panel is populated at once, and then depaneled into individual boards.
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So to produce 10 ,000 small boards, which sounds like a lot, we may need just 100 panels.
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But again, what really matters is the total number of parts in the job job.
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Now that we have a better understanding of volume, let's look at what a contract manufacturer needs in order to do low, mid, and high volumes in one factory.
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First, you need SMT lines designed for both speed and flexibility.
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These machines pick and place up to 45 ,000 parts per hour to complete high volume jobs fast, and are designed for fast changeover between jobs,
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so you can do many different lower volume jobs in a week.
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A contract manufacturer may also have a semi -automated line for lower -volume jobs, as well as new products.
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For work other than SMT assembly, we may use manual processes for low volumes and switch to robotic systems for higher volumes.
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For example, this robotic dispensing system for box builds.
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For IC programming, we can process a low volume by hand or use a robotic system for higher volumes.
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For through -hole PCB assembly and some mixed technology boards, the wave solder can handle any volume.
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For mixed technology boards that can't be wave soldered, we can do hand soldering for low volumes or robotic soldering for higher volumes.
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Visit our website to learn more about contract manufacturing of low, mid, or high volume electronic products in the USA.
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Bu dersin kelimeleri ve konuşma notları

Bu konuşma dersi “PCB Assembly: Low Volume vs. High Volume” videosuna dayanıyor. En çok tekrarlanan kelimeler: volume, board, parts, contract, manufacturer. Bu videoda gölgeleme çalışması için 32 cümle ve 471 kelime var. Konuşma bölümü 3:00 sürüyor. Konuşmacı dakikada yaklaşık 157 kelimeyle, günlük konuşmaya yakın doğal bir hızda konuşuyor. Kelimelerin %82’i İngilizcede en sık kullanılan 3.000 kelime arasında; geri kalanına başlamadan önce bakmakta fayda var.

Bu videodaki önemli kelimeler

Videodan öğrenmeye değer 12 kelime, telaffuzu ve anlamıyla:

KelimeTelaffuzAnlam
manufacturer isim/ˌmænjʊˈfæktʃəɹə/üretici
robotic sıfat/ɹoʊˈbɑtɪk/robotik
designer isim/dɪˈzaɪnɚ/tasarımcı, dizayncı
electronics isim/ɪˌlɛkˈtɹɑ.nɪks/elektronik
array isim/əˈɹeɪ/elbise, giyecek
layout isim/ˈleɪ.aʊt/tanzim
buyer isim/ˈbaɪ.əɹ/alıcı, müşteri
flexibility isim/ˌflɛksɪˈbɪlɪti/esneklik, elastikiyet
evaluate fiil/ɪˈvaljʊeɪt/değerlendirmek
solder isim/ˈsɒl.də(ɹ)/lehim
dispense fiil/dɪˈspɛns/dağıtmak, tevzi etmek
populate fiil/ˈpɒp.jʊˌleɪt/meskûn kılmak, şeneltmek

Dikkat edilecek telaffuzlar

Konuşmacı doesn't, can't, we'd gibi kısaltılmış biçimleri 5 kez kullanıyor. Bunları duyduğunuz gibi kısa söyleyin.

  • Uzun kelimeler — vurguyu doğru yere koyun: manufacturer /ˌmænjʊˈfæktʃəɹə/, electronics /ɪˌlɛkˈtɹɑ.nɪks/, flexibility /ˌflɛksɪˈbɪlɪti/

Türkçe konuşanların zorlandığı sesler:

  • /æ/ — “e”den daha açık: manufacturer /ˌmænjʊˈfæktʃəɹə/, manual /ˈmæn.j(u)əl/

Bu videoyla nasıl çalışılır

  1. Videonun tamamını konuşmadan bir kez dinleyin ve bilmediğiniz kelimeleri not edin.
  2. 0,75× hızla başlayın, cümle cümle tekrar edin ve kolaylaşınca normal hıza dönün.
  3. Kendinizi kaydedin ve orijinaliyle karşılaştırın; manufacturer, robotic, designer gibi kelimelere özellikle dikkat edin.

Gölgeleme Tekniği Nedir?

Gölgeleme, başlangıçta profesyonel tercüman eğitimi için geliştirilen ve çok dilli Dr. Alexander Arguelles tarafından popüler hale getirilen, bilim destekli bir dil öğrenme tekniğidir. Yöntem basit ama güçlüdür: ana dili İngilizce olan bir sesi dinler ve hemen yüksek sesle tekrar edersiniz — konuşmacıyı 1-2 saniye gecikmeyle takip eden bir gölge gibi. Pasif dinleme veya dilbilgisi alıştırmalarının aksine, gölgeleme beyninizi ve ağız kaslarınızı gerçek konuşma kalıplarını eşzamanlı olarak işlemeye ve yeniden üretmeye zorlar. Araştırmalar, telaffuz doğruluğu, tonlama, ritim, bağlı konuşma, dinleme anlama ve konuşma akıcılığını önemli ölçüde geliştirdiğini göstermektedir — bu da onu IELTS Konuşma hazırlığı ve gerçek dünya İngilizce iletişimi için en etkili yöntemlerden biri yapar.

Shadowing tekniği: adım adım eksiksiz rehberi okuyun →