Transmitters

Description

An electronic transmitter is a device, which generates, amplifies, and broadcasts an electromagnetic signal such as television, radio or other telecommunication signals. Transmitter consists of electronic circuits, an oscillator, a power supply, a modulator, and an amplifier for radio frequency / audio frequency. Electronic transmitter works with the support of antenna. Electronic circuits are used to generate, shape and amplify the telecommunication signal which is sent to the antenna for onward transmission to space. A receiver must be present for receiving the electromagnetic signal that is sent from the electronic transmitter. A mechanical transmitter is a measurement device which is used to convert the mechanical force or pressure in to electrical energy, the output signal being in mA. This transmitter can also convert the heat energy in to the electrical energy.

Types

The different types of electronic transmitters are given below:

• AM Transmitters
• FM Transmitters
• RF Transmitters
• TV Transmitters
• VHF TV Transmitters
• UHF TV Transmitters

The different types of mechanical transmitters are given below:

• Pressure Transmitters
• Differential Pressure Transmitters
• Temperature Transmitters
• Level Transmitters

Applications

The various applications of electronic transmitters are given below:

• Mainly used in the telecommunications industry
• Extensively used for broadcasting TV and radio signals
• Used to transmit sound from the microphone to the receiver
• Used in portable video or audio systems, such as compact disc (CD) player, media player and satellite radio systems

The various applications of mechanical transmitters are given below:

• Used to measure the flow of liquid, gas or steam
• Used to measure the pressure and liquid level
• Used to measure the solidifying or precipitating liquid’s density levels
• Used in material handling applications, engines for valves and power plant systems, construction and forestry equipment, water booster systems and refrigeration systems