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WORKING PRINCIP OF RECEIVER TELEVISION REPAIRING RECEIVER TELEVISION SYSTEM By Sarbini, S.Pd SMK Muh 3 Yogyakarta.

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Presentation on theme: "WORKING PRINCIP OF RECEIVER TELEVISION REPAIRING RECEIVER TELEVISION SYSTEM By Sarbini, S.Pd SMK Muh 3 Yogyakarta."— Presentation transcript:

1 WORKING PRINCIP OF RECEIVER TELEVISION REPAIRING RECEIVER TELEVISION SYSTEM By Sarbini, S.Pd SMK Muh 3 Yogyakarta

2 Teknologi dan Rekayasa THE MEANING TELEVISION  Tele : far  Vision : see/view  Television : see from far distance  Television : Electronic instrument that can be broadcast / show an object from a far distance

3 Teknologi dan Rekayasa SUB SYSTEM TELEVISION  TRANSMITTER : Transmit video signal with the modulation signal (carrier)  RECEIVER : Receive video signals and conver to video and sound  CONDUCTION MEDIA (AIR,CABEL) : Conduction elektromagnetik waves from transmitter to the television receiver

4 Teknologi dan Rekayasa THE WORKING PRINCIPLES

5 Teknologi dan Rekayasa

6 RECEIVER TELEVISION BLACK WHITE BLOCKS

7 Teknologi dan Rekayasa RECEIVER TELEVISION COLOUR BLOCKS

8 Teknologi dan Rekayasa DETAIL RECEIVER TELEVISION COLOUR BLOCKS

9 Teknologi dan Rekayasa 1. TUNER / PENALA  Penala : receive input sinyal (TV wave) from antena and convert to frecuency IF sinyal.

10 Teknologi dan Rekayasa PART OF TUNER RF Amplifier : amplifi sinyal that receive antena Lokal Osilator :generating sinyal high frekuency that value higher comparated RF frekuency RF from antena (FO= frekuency RF+IF). Mixer :Mixing sinyal from RF amplifier and osilator local until produced IF frekuency (IF video PAL=38,9MHz, IF Sound = 33,4 MHz) dan NTSC= 42,75 MHz)

11 Teknologi dan Rekayasa 2. AUDIO PROCESSING FUNCTION Separated information sinyal (audio) from signal audio carrier and amplifiying until can listening by audience.

12 Teknologi dan Rekayasa AUDIO PROCESSING PARTS  Sound IF (IF Suara) amplifier : amplifying audio signal that demodulated wave FM (5,5 MHz).  Detector FM (Frequency Modulation) : separate audio frekuency from carrier that modulated FM.

13 Teknologi dan Rekayasa  Power Amplifier (Sound Output) : Amplifying audio signal until be able vibrate loudspeaker.  Loudspeaker : convert audio signal audio to sound.

14 Teknologi dan Rekayasa 3. PROCESSING VIDEO SIGNAL  Amplifier IF (Intermediate Frequency)  Video Detektor  Video Amplifier  AGC (Automatic Gain Control)

15 Teknologi dan Rekayasa VIDEO AMPLIFIER BLOCK

16 Teknologi dan Rekayasa WORKING PRINCIPPLES OF AGC

17 Teknologi dan Rekayasa AGC TYPE  AGC AVERAGE  PICK LEVEL AGC  KEYED AGC

18 Teknologi dan Rekayasa 4. SYNCRONIZATION AND DEFLEKTION  Synkronization  Horisontal Deflection  Horisontal Osilator : generate pulse horisontal frekuency (system CCIR Hz,FCC Hz).  Horisontal Driver : Amplifying Signal horisontal frekuensi from osilator so be able suplies enought electric current for push horisontal output transistor (HOT).  Horisontal Output (HOT) : provide power electric sawtooth (arus gigi gergaj) for forward to horisontal deflektion yoke.

19 Teknologi dan Rekayasa  High Voltage Generate Produce high voltage for activate CRT until be able to produce electrons for video display.

20 Teknologi dan Rekayasa Horizontal Deflection Yoke  Produce enough electric current for scaning electric beam horizontal direction.  Generate high voltage pass sekunder fly back transformator, for forward to electrode anoda CRT and elektroda fokus.

21 Teknologi dan Rekayasa  Defleksi vertikal Part 1.vertikal Osilator : generate vertikal frekuency (50 HZ) 2.Driver Osilator : Amplifying signal from osilator so can provide electric current enough for push vertikal output transistor. 3.Output Osilator : amplifying signal from Vertikal driver for forwarded to deflection vertikal yoke.

22 Teknologi dan Rekayasa 5. Power Supply  Power Supply : convert AC voltage to DC voltage for distributed to all part that need.  2 system power supply: 1.Konvensional System 2. Switching System

23 Teknologi dan Rekayasa TELEVISION MACHINE


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