Shadowing Practice: What are PCBs and PCBAs? The 'PCB basics' - Learn English Speaking with Video
Ders oluşturuluyor...
1
Welcome to this video series where we're going to be looking at PCBs.
2
This is the first video and we're going to be looking at PCB basics.
3
So what's the difference between a PCB and a PCBA?
4
Well you can generally refer to a blank unstuffed and unsoldered printed circuit board as a PCB.
5
You can see an example of this on the top image here.
6
The assembled and soldered assembly is then known as a PCBA or a board assembly or simply a PCA.
7
And you can see an example of this on this bottom image.
8
So if we look at the two differences,
9
the top one clearly has no components on it whereas the bottom has a fully populated set of components.
10
So the basic understanding of a PCB.
11
A basic PCB consists of a flat sheet of insulating material and a layer of copper foil laminated to the substrate.
12
Chemical etching divides the copper into separate conducting lines called tracks or circuit tracers,
13
pads for connections, wires to pass connections between layers of copper.
14
The tracks function as wires fixed in place and are insulated from each other by air and the bored substrate material.
15
The surface of the PCB may have a coating
16
that protects the copper from corrosion and reduces the chances of solder shorts between traces
17
or undesired electrical contact from stray bare wires.
18
This coating is called the solder resist.
19
You can see an example of a bare PCB here on the right
20
where we can clearly see the tracks and the holes
21
or the wires going from one side of the board to the other.
22
So what makes up a PCB?
23
The basic PCB consists of four layers, which are heat laminated together into a single board.
24
The four layers are substrate, copper, solder mask and silk screen.
25
The substrate needs to be thermally stable and the most common material used is FR4.
26
FR4 is a glass epoxy high pressure thermoset plastic laminate with good strength to weight ratio with near zero water absorption.
27
FR simply stands for Flame Retardant.
28
And you can see the basic layers here in this image, where we have the substrate, the copper, the solder mask and the silkscreen on top.
29
So what are the different layers on top of the FR4?
30
First we have the copper layer, which is the electrical conductor where the tracks are etched, which make up the circuit.
31
The thickness can vary depending on the power requirements, but in general the thickness is around 35 microns or equivalent to 1.4 thou.
32
Second is the solder mask layer and this gives the PCB its green color.
33
Its purpose is to insulate the copper tracks from contact with metal, solder or other conductive items.
34
And third, the silkscreen layer is a combination of shapes, letters, symbols and instructions.
35
It provides identification for each part and you can clearly see
36
that in this image where we have part identifications don't forget to check out our other videos in this series
37
and you can always contact us
38
if you need any help with your projects in China
39
so don't forget to a like share and subscribe
40
if you hit this little bell symbol
41
that will notify you of any new content that we upload
42
so thanks for listening my name is Paul Adam from South East and I shall see you in the next video
📺 Aynı Kanal
C17
What is SMT (Surface Mount Technology)? PCB Assembly (Part 2)
Business EnglishUniversity StudentsWorking Adults
C1Sofeast PCB Video Series Introduction
Business EnglishUniversity StudentsWorking Adults
B22
DFM And DFA Explained
Business EnglishUniversity StudentsWorking Adults
C13
What is SMT (Surface Mount Technology)? PCB Assembly (Part 3)
Business EnglishUniversity StudentsWorking Adults
C14
PCB Inspection Methods & Common PCB Defects
Business EnglishUniversity StudentsWorking Adults
C13
NPI Process 1: Why A Pilot Run Before Mass Production Is Very Useful
Business EnglishUniversity StudentsWorking Adults
C15
What is SMT (Surface Mount Technology)? PCB Assembly (Part 1)
Business EnglishUniversity StudentsWorking Adults
B2BONUS: Should we do PCB or enclosure design first? (Feat Andrew Amirnovin)
Business EnglishUniversity StudentsWorking Adults
B1Don’t Approve a Product Until You’ve Lived With It
Business EnglishWorking Adults
B1The Product Passed the Safety Test, But Was Still Too Hot to Hold
Business EnglishWorking Adults
B2The Product Worked, But the Packaging Made It Look Dead
Business EnglishWorking Adults
B2Why User Experience Is Harder Than Engineering
Business EnglishUniversity StudentsWorking Adults
C14 NPI Tips Before You Move Into Mass Production
Business EnglishWorking Adults
C1The Production Validation Test (PVT) Phase of the NPI Process
Business EnglishWorking Adults
C1The Three NPI Phases Explained
Business EnglishUniversity StudentsWorking Adults
C1When Can The NPI Process Begin?
Business EnglishUniversity StudentsWorking Adults
C1NPI Process #3: Why A Feasibility Study With Suppliers Saves Time & Prevents Issues
Business EnglishWorking Adults
C1NPI Process 2: New Product Development Process (Why Planning Before Prototyping Saves Time)
Business EnglishUniversity StudentsWorking Adults
C1PCBs | Electronic Goods Reliability Testing
Business EnglishUniversity StudentsWorking Adults
✨ Video Öner
C12
113 cümleler
What Are PCB and PCBA? What’s the Difference Between Them?
Business EnglishUniversity StudentsWorking Adults
C12
100 cümleler
Epithelial Tissue
Cambridge Exam PrepUniversity StudentsWorking Adults
B21
23 cümleler
Working Principle of Chiller Plant | Animation | English
Business EnglishUniversity StudentsWorking Adults
C11
181 cümleler
Aircraft General Knowledge | PPL Expert Online Ground School FREE Sample
Business EnglishUniversity StudentsWorking Adults
B21
41 cümleler
Making a 360° Controller Smaller than a Penny!
Business EnglishUniversity StudentsWorking Adults
B22
159 cümleler
Electrical Engineering Simply Explained
Business EnglishUniversity StudentsWorking Adults
B21
285 cümleler
The basics in Amplitube 5
Business EnglishUniversity StudentsWorking Adults
B2168 cümleler
Roman Catholic vs Eastern Orthodox: 60 Differences
University StudentsWorking Adults
C1101 cümleler
BGP Overview
Business EnglishUniversity StudentsWorking Adults
B26
205 cümleler
Everything You Didn’t Know About Titanium Bikes
Business EnglishUniversity StudentsWorking Adults
C13
131 cümleler
Understanding BGA Pads: Solder Mask Defined vs Non-Defined
Business EnglishUniversity StudentsWorking Adults
Bu dersin kelimeleri ve konuşma notları
Bu videoda gölgeleme çalışması için 42 cümle ve 567 kelime var. Konuşma bölümü 3:55 sürüyor. Konuşmacı dakikada yaklaşık 145 kelimelik dengeli bir hızla konuşuyor; gölgeleme için rahat bir tempo. Kelimelerin yalnızca %73’i İngilizcede en sık kullanılan 3.000 kelime arasında, bu yüzden kelime dağarcığı zorlayıcı.
Bu videodaki önemli kelimeler
Videodan öğrenmeye değer 15 kelime, telaffuzu ve anlamıyla:
| Kelime | Telaffuz | Anlam |
|---|---|---|
| layer isim | /ˈleɪ̯ɚ/ | katman, tabaka |
| copper isim | /ˈkɒpə/ | bakır |
| wire isim | /ˈwaɪɚ/ | tel |
| mask isim | /mæsk/ | maske |
| coat isim | /ˈkoʊ̯t/ | palto |
| component isim | /kəmˈpoʊ.nənt/ | parça, bileşen |
| symbol isim | /ˈsɪmbəl/ | simge, sembol |
| stable isim | /ˈsteɪ.bəl/ | ahır |
| refer fiil | /ɹɪˈfɜː/ | zikretmek |
| sheet isim | /ʃit/ | varak, sayfa |
| ratio isim | /ˈɹeɪ.ʃoʊ/ | oran |
| requirement isim | /ɹɪˈkwaɪɹmənt/ | gereklilik, zaruret |
| resist fiil | /ɹɪˈzɪst/ | direnmek |
| trace isim | /tɹeɪs/ | bulmak, iz sürmek |
| silk isim | /sɪlk/ | ipek |
Duyacağınız deyimsel fiiller
| Kelime | Anlam |
|---|---|
| check out fiil | gözden geçirmek |
Bu videodaki dil bilgisi
Konuşmacının en çok kullandığı yapılar, videodaki sözcüklerin aynısıyla:
| Yapı | Videoda |
|---|---|
| Edilgen yapı be + fiilin üçüncü hâli — kimin yaptığı değil, ne olduğu önemli | are insulated · is called · are etched |
| İlgi cümlecikleri who / which + cümle — bir kişi ya da şey hakkında ek bilgi | layers, which are · layer, which is |
Dikkat edilecek telaffuzlar
Konuşmacı don't, we're gibi kısaltılmış biçimleri 4 kez kullanıyor. Bunları duyduğunuz gibi kısa söyleyin.
- “sh” ve “zh” sesleri: identification /aɪˌdɛn(t)ɪfɪˈkeɪʃn̩/, sheet /ʃit/, ratio /ˈɹeɪ.ʃoʊ/, instruction /ɪnˈstɹʌkʃən/, absorption /æbˈsɔɹp.ʃn̩/
- Uzun kelimeler — vurguyu doğru yere koyun: electrical /ɪˈlɛktɹɪkəl/, identification /aɪˌdɛn(t)ɪfɪˈkeɪʃn̩/
Bu videoyla nasıl çalışılır
- Videonun tamamını konuşmadan bir kez dinleyin ve bilmediğiniz kelimeleri not edin.
- Normal hızda cümle cümle tekrar edin; ritminiz konuşmacıyla aynı olana kadar her cümleyi yineleyin.
- Kendinizi kaydedin ve orijinaliyle karşılaştırın; layer, copper, wire 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.