Monochrome Television Block Diagram

Diagram Showing Input and Outputs Speaker Television Receiver All Section Picture Tube Power Supply AC Input

Black and White Television Sound IF Amplifier Sound Detector Audio Amplifier Speaker Tuner IF Amplifier Video Detector Video Amplifiers AGC Picture Tube All Stages Vertical Sweep AFC Sync Separator Low Voltage Power Supply High Voltage Power supply Horizontal Oscillator Horizontal Output AC line

Function of each Block Section Low Voltage Power Supply – this power supply DC voltage in all section of the television. It is also a place used to convert AC voltage to DC voltage. Sound IF Amp – received and synchronize Sound signal Sound detector-

Continuation… Sound detector – filter the signal received from the sound IF amp. Audio Amplifiers- Amplify signal from the sound detector Tuner – Select the station or channel that you desire. Sound IF Amplifiers – received the signal emitted from the sound trap Video Detector – filter the signal received from the video IF amp Video Amplifier - Amplify the video received from the video detector section.

Continuation… AGC AFC Sync separator Vertical Sweep Horizontal Oscillator Horizontal Output High Voltage Power Supply Picture tube Deflection Yoke

Color Television Speaker Picture Tube All Stages AC line Sound IF Amplifier Sound Detector Audio Amplifier Speaker Tuner IF Amplifier Video Detector Video Amplifiers AGC Picture Tube All Stages Vertical Sweep AFC Sync Separator Low Voltage Power Supply High Voltage Power supply Horizontal Oscillator Horizontal Output AC line

Details of Vertical and Horizontal Section High Voltage rectifier Horizontal Oscillator Horizontal Driver Horizontal Output Flyback Filament coil Yoke To Filament Coil 2 Coil 1 Picture Tube All Stages Vertical Oscillator Vertical Driver Vertical Output Low Voltage Power Supply AC line

Horizontal Scanning Horizontal Scanning - 15.734 Hz Vertical Scanning – 59 Hz pulse Interlace scanning – Function of horizontal and vertical deflection pulls the beam from left to right and the other force pull from top to bottom. Composed of 525 lines to complete one picture called frame 1 lines = 262 lines 2 lines = 525 equivalent to 1 frame

Composite Video Signal is composed of the following Video Signal –gives the right image information to the picture tube. ( 30 Hz – 4.2 MHz Horizontal Blanking pulse – tell the receiver to blank the electron beam Horizontal synchronizing Pulse Vertical Blanking Pulse Vertical synchronizing Pulse Equalizing pulse