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Basic Electronics for CELLPHONE PCB Component

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cellpisces
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Posts : 23
Join date : 2009-06-20
Age : 30
Location : midsayap, cotabato philippines

PostSubject: Basic Electronics for CELLPHONE PCB Component   Wed Jul 08, 2009 6:00 pm

Cellphone PCB Component:

1. Resistor - used to limit the flow of current. It has no polarity and is checked
by continuity testing (analog or digital type tester).
(color; black and shiny, blue or violet)

2. Inductor - used together with capacitors as current filters. It has no polarity and is checked by continuity testing (analog or digital type tester).
(color; gray or black but not shiny)

3. Fuse - used to protect the unit from overload. It has no polarity and is checked
by continuity testing (analog or digital type tester).
(color; black or white with "K")

4. Diode - acts as rectifier. It has polarity and is checked by one-sided continuity testing.
(color; black with stripe at one end)

5. Capacitor - used as voltage filters and can store small amount of electricity. It has polarity and is checked by one-sided continuity testing.
(color; yellow or black with clear markings at the back with stripe on one
side for polarized capacitors and
brown for non-polarized capacitors)

6. Transistor - used to amplify voltages.
(color; black, it has 3, 5, or 6 pins)

7. Light Emitting Diode (LED)- used to illuminate the LCD and keypads. Commonly known as Backlights. Lights on when checking continuity.

8. Speaker - converts electrical signals into audible sound. Has cracking sound when testing continuity.

9. Microphone - converts audible sound into electrical signals. Checked using one-sided continuity test.

10. Switch - connects two separate lines. Has continuity when pressed.

11. Integrated Circuit (IC) - performs multi-task function.

Types of IC Packaging;

a. Pin type - uses legs made of pins and can be Single In-Line Package
(SIP) or Dual In-Line Package(DIP)

b. BGA (Ball Grid Array) - uses legs made of solder ball.
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Yonon
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Posts : 23
Join date : 2009-06-08

PostSubject: Re: Basic Electronics for CELLPHONE PCB Component   Wed Jul 08, 2009 9:23 pm

wow salamat dodong ariel..kakugihan gyud akong palangga ba:D
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Joven



Posts : 2
Join date : 2011-04-12

PostSubject: Re: Basic Electronics for CELLPHONE PCB Component   Thu Apr 14, 2011 8:00 am

bos patulong s keypad ng 1200 no punktion ang DOWN UP OK and number 8
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PostSubject: Re: Basic Electronics for CELLPHONE PCB Component   Today at 12:47 pm

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Basic Electronics for CELLPHONE PCB Component

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