Telecom and AV Circuits

Tutorials and Solutions:

Video Guide: Telecom and AV Circuits

Solutions: Telecom and AV Circuits for ConceptDraw DIAGRAM

Sample 1: Amplifier with VHF and HF Antenna

Telecom and AV Circuit sample: This sample shows an amplifier with active high frequency (VHF) and high frequency (HF) antennas. An amplifier is applied to increase the power of a signal, voltage, or current. It uses electric power from a power supply to raise the amplitude of the signal and provide a greater value at the output.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 2: Armstrong Regenerative Receiver Circuit

Telecom and AV Circuit sample: This sample diagram shows Armstrong regenerative receiver circuit with a single vacuum tube. This device was invented in 1912 by American engineer Edwin Armstrong and patented by him in 1914. It is an amplifier circuit with positive feedback (regeneration). The gain in Armstrong regenerative receiver is increased through using the tickler coil (L3). It feeds back some of the energy from the output plate circuit into the input grid circuit.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 3: CB Intercom Circuit

Telecom and AV Circuit sample: This telecom and TV diagram example shows a common battery (CB) intercom circuit. An intercom is a stand-alone voice communications system functioning within one or several buildings independently of the public telephone network. The intercoms are easily connected to control devices like signal lights or door latches, to video systems, computers, TCP/IP, public address loudspeaker systems, walkie-talkies, or other intercoms.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 4: Common Battery Telephone Circuit

Telecom and AV Circuit sample: This sample shows a common battery telephone circuit. A telephone is a telecommunications device firmly entered in our life. It allows two or more users to communicate through a conversation at a far distance in real-time. The built-in microphone and earphones are the main components of the telephone or its handset part. The microphone receives the sound waves, typically a human voice, and converts them into electronic signals. These signals are transmitted through cables and other communication channels to another user and then played back to him in the form of sound.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 5: Crystal Radio Circuit with Bias and Buzzer

Telecom and AV Circuit sample: This diagram sample shows a crystal radio receiver circuit with a bias battery and testing buzzer. A crystal radio receiver is the simplest type of radio receiver made of just a few simple parts. It includes a coil of wire, a wire for an antenna, a capacitor, headphones, and a crystal detector made of a crystalline mineral. The crystal radio receiver uses only the power of the internal radio signal to reproduce the sound and does not require external power. The offered circuit was initially used with cat's whisker detectors in the wireless telegraphy.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 6: Heterodyne Radio Receiver Circuit 1920

Telecom and AV Circuit sample: This sample shows a heterodyne radio receiver circuit. This type of radio receiver was invented in 1901 by Reginald Fessenden and was used for receiving continuous wave radiotelegraphy transmissions. The continuous wave radiotelegraph signal is transmitted at radio frequency fC and consists of Morse code pulses, including two types of pulses "dots" and "dashes". The carrier wave of these signals hasn't modulation.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 7: Inductively Coupled Crystal Radio Receiver Circuit

Telecom and AV Circuit sample: This sample shows an inductively coupled crystal radio receiver circuit with impedance matching. This receiver is also called a "loose coupler" or "two circuit". The circuit includes the primary and secondary transformers L1 and L2 and the antenna coupling them to improve the poor selectivity. The crystal detector D1 is attached to a tap on L2 and is impedance matched to the tuned circuit. The L1 transformer resonates with the capacitance of the antenna and the primary tuning capacitor C1. The L2 transformer resonates with the secondary tuning capacitor C2. Each coil acts as a tuned circuit, they both interact with each other and provide more narrow bandwidth.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 8: Microwave Radiometer Block Diagram

Telecom and AV Circuit sample: This block diagram sample shows a microwave radiometer (MWR) using the heterodyne principle. A microwave radiometer is a high-sensitive receiver that measures energy emitted at microwaves (from millimeter to centimeter wavelengths). These devices are used in a variety of environmental, engineering, and astronomy applications and allow measuring the thermally-emitted electromagnetic radiation. Due to the weather forecasting and climate monitoring are possible.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 9: Multipath TV Ghost

Telecom and AV Circuit sample: This sample is dedicated to the effects appearing in TV systems and a multipath TV ghost, in particular. Multipath is a kind of radio communication phenomenon. It is a spread of the radio signals when they reach the receiving antenna by two or more paths.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 10: Reflex Receiver Block Diagram

Telecom and AV Circuit sample: This block diagram sample shows a simple reflex radio receiver. The amplifier functions as a tuned radio frequency (TRF) receiver in this circuit and provides the amplification of both high-frequency radio signal (RF) and low-frequency audio signal (AF). The RF signal flows from the antenna to a tuned circuit through the bandpass filter. Then, it passes through an amplifier consisting of one or more vacuum tubes or transistors. After that, the signal pass to the demodulator through the high pass filter.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

Sample 11: Simplified Circuit Diagram of Telephone Apparatus

Telecom and AV Circuit sample: This telecom and TV diagram sample shows a simplified circuit diagram of the telephone apparatus. This equipment includes a lot of components, but the key ones are a microphone and an earphone embedded in a telephone hook.

This drawing is created using ConceptDraw DIAGRAM diagramming software enhanced with Telecom and AV Circuits solution from ConceptDraw Solution Park.

All samples are copyrighted CS Odessa's.

Usage of them is covered by Creative Commons “Attribution Non-Commercial No Derivatives” License.

The text you can find at: https://creativecommons.org/licenses/by-nc-nd/3.0