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PCB Circuits

j s m
by

Munkhbayar Gombosuren

on 26 February 2014

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Transcript of PCB Circuits

printed
circuit board

Detail 2
Detail 3
МУИС-ФЭС

Мөнхбаяр


평가
주제선정
계획수립
프로젝트수행
발표 자료제작및 발표평가
포트폴리오
제 품 평 가
태 도
도우미자료
시설 및 기자재현황
최고가 될수 있는 경험 되세요
웹사이트
프로젝트설정이유
PCB гэж юу вэ?
Электрон элементүүдийг хооронд нь холбох
Электрон болон цахилгаан тоног төхөөрөмж нь электрон элементүүдийн бүрэлдэхүүн хэсгүүдийн тодорхой нэг үүрэг үйл ажиллагаа бүхий нэгдэл юм.
Электроникийн эрэн зуунд электрон төхөөрөмжүүд нь жижигхэн авсаархан цахилгаан бага зарцуулалттай ашигт үйл ихтэй гэсэн маш олон шаардлагыг өөртөө агуулсан байхыг шаардаж байгаа билээ. Ингэснээр электрон төхөөрөмжүүдийн бүрэлдэхүүн хэсгүүдийн хоорондын холбогдох байдал дизайн зэрэг нь сайн байхыг шаардаж байна.
Одоогийн электрон төхөөрөмжүүдийн жижиг хэсгийг үйлдвэрлэлийн шатанд маш жижиг болгон тодульчилсан байдаг билээ. Энэхүү жижиг модуль хэсгийг хэрхэн загварчлах хэрхэн ажиллах бүрэлдэхүүн хэсгийн хэрхэн холбогдон ажиллах зарчмыг PCB (Printed circuit board) -ээр тайлбарлаж болно.


Хичээлийн ерөнхий агуулга
Basics of Printed Circuit Boards
Electronic Components
Layout Planning and Design
Design Considerations for Special Circuits
Artwork Generation
Copper Clad Laminates
Image Transfer Techniques
Plating Processes
Etching Techniques
Mechanical Operationsa
Multi-layer Boards
Flexible Printed Circuit Boards
Soldering, Assembly and Re-working Technique s
Quality, Reliability and Acceptability Aspect s
Single-sided
Printed Circuit Boards
Double-sided
Printed Circuit Boards
Double-sided board with plated through-hole connection (PTH);


Double-sided board without plated through-hole connection (non-PTH).
Basics of Electronic Components
resistors
capacitors
transistors
integrated circuit
passive components
active components
Component Symbols
Resistors
Resistance = voltage/current
(Ohm’s Law).
Characteristics
Variable Resistors or Potentiometers
Potentiometers can be categorized into the following types depending upon the number of resistors
and the control arrangement used:
Single Potentiometers: Potentiometer control with one resistor;
Tandem Potentiometers: Two identical resistor units controlled by one spindle;
Twin Potentiometers: Two resistor units controlled by two independent concentric spindles;
Multi-turn Potentiometers: Potentiometer with knob or gear wheel for resistance
adjustment; they may have up to 40 rotations of spindle; and
Potpack: Rectangular potentiometers, either single or multi-turn.
Potentiometers are typically used for setting bias values of transistors, setting
Light-dependent Resistors (LDRs)
Light-dependent Resistors cadmium sulphide. They contain very few free electrons
when kept in complete darkness and therefore, exhibit very high resistance. When subjected to
light, the electrons are liberated and the material becomes more conducting. When the light is
switched off, the electrons are again recaptured and the material becomes less conducting or an
insulator. The typical dark resistance of LDRs is 1 MOhms to 10 MOhms. Its light resistance is 75
to 300 ohms. The LDRs take some finite time to change its state and this time is called the recovery time. The typical recovery rate is 200 kOhms/sec.
Capacitors
Q = CV
Types of Capacitors
Inductors
Diodes
Full transcript