Television 1 Jess Role @ UEAB 2006 Television Horizontal Section

Television 1 Jess Role @ UEAB 2006

Television Television Horizontal Horizontal

SectionSection

Comparison o f a black and Comparison o f a black and white television Horizontal white television Horizontal

sectionsection Booth drive sawtooth signal that runs to the Booth drive sawtooth signal that runs to the

deflection yoke.deflection yoke. Booth have high voltage about 30,000V and Booth have high voltage about 30,000V and

about 20,000 for black and white.about 20,000 for black and white. Picture tubes that uses high voltage Picture tubes that uses high voltage

electrostatic focus requiring approximately electrostatic focus requiring approximately 6,000 volts6,000 volts

Booth have the output stageBooth have the output stage For colored it requires anti-pincushioning For colored it requires anti-pincushioning

circuits these are not found In a B & Wcircuits these are not found In a B & W B & W have less radiation compare to colored B & W have less radiation compare to colored

Horizontal Output AmplifierHorizontal Output AmplifierColored Television Colored Television

horizontal output is just the horizontal output is just the same as the Black and same as the Black and

whitewhite Flyback functionFlyback function Flyback acts as step down transformer Flyback acts as step down transformer

between horizontal amplifier and the yokebetween horizontal amplifier and the yoke Act as stepdown transformer supply Act as stepdown transformer supply

AC voltage for the picture tube heater AC voltage for the picture tube heater and rectifier.and rectifier.

Supplies retrace pulses for the use of Supplies retrace pulses for the use of other sources. (AGC, AFC and other sources. (AGC, AFC and horizontal retrace blankinghorizontal retrace blanking

Horizontal Scanning Center Horizontal Scanning Center to the rightto the right

Supply is given to the electron beam Supply is given to the electron beam of the picture tubeof the picture tube

RetraceRetrace

Controls in the Controls in the horizontal Sectionhorizontal Section

Horizontal HoldHorizontal Hold Horizontal lineHorizontal line FocusFocus Horizontal width Horizontal width High voltage adjustHigh voltage adjust

ProblemsProblems

Picture widthPicture width Blurred picture Blurred picture Horizontal lineHorizontal line Picture rolling sidewaysPicture rolling sideways Distorted picturesDistorted pictures

Typical Horizontal output Amplifier Black and White

Horizontal Output StageHorizontal Output Stage

Horizontal deflection Horizontal deflection illustrationillustration

Voltage Voltage and and

current current relationsrelations

hiphip

Horizontal output Horizontal output amplifieramplifier

Horizontal output used Horizontal output used in colorin color

FlybacFlybackk

Effect of open balancingEffect of open balancing

Narrow raster due to Narrow raster due to shorted Turns in flybackshorted Turns in flyback

Horizontal keystoneHorizontal keystone

Horizontal Output Amplifier Horizontal Output Amplifier ControlsControls

Basic High Voltage Basic High Voltage CircuitCircuit

Split high voltage flyback Split high voltage flyback TransformerTransformer

High Voltage Focus power High Voltage Focus power supplysupply

High-Voltage Divider High-Voltage Divider FocusFocus

High voltage hold-down High voltage hold-down circuit used in transistorcircuit used in transistor

Horizontal frequency hold-Horizontal frequency hold-Down circuitDown circuit

Horizontal Output With Horizontal Output With High VoltageHigh Voltage

Block Diagram Zenith Block Diagram Zenith Horizontal DeflectionHorizontal Deflection

Zenith Self-regulation Zenith Self-regulation systemsystem

Using SCR in deflection Using SCR in deflection associated with waveformassociated with waveform

Vacuum Tube Horizontal Vacuum Tube Horizontal outputoutput

Television 1 Jess Role @ UEAB 2006 Television Horizontal Section

Documents

Jess Garris

3.1 Prof Jess Role @ UEAB 2010 3 3 INFORMATION SYSTEMS, ORGANIZATIONS, MANAGEMENT, AND STRATEGY

Television 1 Jess Role @ UEAB2006 AFT and remote control Circuits

EDAD 765 Lectured by Jesse Role @ UEAB 2008. Please Turn Off Your Cellphone!! Thank you! Lectured by Jesse Role @ UEAB 2008

Introduction Computer Hardware Jess Role @UEAB 2006 EXPANSION CARDS BUS ARCHITECTURE AND CONNECTORS

Television 1 Jess Role @ UEAB Picture Tube. Television 1 Jess Role @ UEAB Other names CRT cathode ray tube Screen Picture tube Picture bulb

COMP 364 Jess Role @ UEAB 2006 AGP Video Cards. COMP 364 Jess Role @ UEAB 2006 What is a Graphics Card? A video card or graphics card is the name we give

11.1 Prof Jess Role @ UEAB 2010Prof Jess Role @ UEAB 2008 11 UNDERSTANDING THE BUSINESS VALUE OF SYSTEMS AND MANAGING CHANGE

4.1 Prof Jess Role @ UEAB 2012 4 4 THE DIGITAL FIRM: ELECTRONIC COMMERCE & ELECTRONIC COMMERCE & ELECTRONIC BUSINESS

Jess October

Television 1 Jess Role @ UEAB2006 Television Sync Separator

Jess feature

Jess Prince

Jess birthday

16.1 Prof Jess Role @ UEAB 2010 16 MANAGING INTERNATIONAL INFORMATION SYSTEMS

WEB DESIGNING Prof. Jesse A. Role Ph. D TM UEAB 2010

1 Basic Digital Logic. Prof Jess Role @UEAB 2008 ◊Digital Electronics ◊Number Systems and Logic ◊Electronic Gates ◊Combinational Logic ◊Sequential Circuits

2.1 Prof Jess Role @ UEAB 2008 2 2 INFORMATION SYSTEMS IN BUSINESS AND EDUCATION

Jess Magazine

5.1 Prof Jess UEAB 2012 5 5 MANAGING HARDWARE HARDWARE ASSETS ASSETS