Here is a block diagram that illustrates the general working of a TV system:

Block diagram of a general TV System 

Here's how the different components of the TV system work together:

Camera: The camera captures the visual information and converts it into an electrical signal.

Modulator: The modulator takes the electrical signal from the camera and modulates it onto a radio frequency carrier wave. This allows the signal to be transmitted over the air.

Transmitter: The transmitter takes the modulated signal and amplifies it to a high power level. It then broadcasts the signal over the airwaves using an antenna.

Antenna: The antenna sends the broadcast signal into the air where it can be received by a TV set.

Receiver: The TV receiver picks up the broadcast signal using its own antenna.

Demodulator: The demodulator in the TV receiver extracts the original electrical signal from the modulated carrier wave.

TV Display: The TV display takes the electrical signal from the demodulator and converts it back into visual information that can be seen on the screen.

This is the general working of a TV system. Of course, there are many more details involved in each component and some differences between analog and digital TV systems, but this should give you a basic understanding.

Here's how the TV system works:

                   +---------------------+

                   |      TV Station      |

                   |   (Broadcasting)     |

                   +---------------------+

                                |

                                v

                   +---------------------+

                   |   Broadcast Signal   |

                   +---------------------+

                                |

                                v

                   +---------------------+

                   |     TV Antenna       |

                   +---------------------+

                                |

                                v

                   +---------------------+

                   |    TV Receiver       |

                   +---------------------+

                                |

                                v

                   +---------------------+

                   |   TV Screen/Display  |

                   +---------------------+

TV Station: The TV station is responsible for producing and broadcasting TV programs. The programs are created in a TV studio or recorded on location, then sent to a transmitter for broadcast.

Broadcast Signal: The TV station sends the TV program over the airwaves as a broadcast signal. This signal is transmitted as electromagnetic waves that travel through the air.

TV Antenna: A TV antenna receives the broadcast signal and converts it into an electrical signal. The antenna is designed to capture and amplify the broadcast signal so that it can be processed by the TV receiver.

TV Receiver: The TV receiver is the device that decodes the electrical signal from the antenna and converts it into a video and audio signal that can be displayed on the TV screen. The TV receiver contains various components, including a tuner, a demodulator, and a video processor, that work together to decode and process the signal.

TV Screen/Display: The TV screen is where the video signal is displayed. The screen can be a CRT (cathode ray tube), an LCD (liquid crystal display), or an LED (light-emitting diode) screen. The video signal is displayed on the screen as a series of lines that are drawn from left to right and top to bottom. The audio signal is also played through the TV speakers.

That's the general working of a TV system!