Buy a linear amplifier? For pure amplification without distortion.
At Deltron, you'll find a professional selection of linear amplifiers – ideal for radio frequency, audio, and laboratory applications. Whether you're a radio enthusiast, engineer, or communications professional, our amplifiers provide powerful and clean signal amplification.
What is a linear?
A linear amplifier, also called a linear amplifier and colloquially referred to as a "heater," is an electronic amplifier that provides a constant gain of the output signal proportional to the input signal. They are used to amplify signals in radio frequency and audio applications. For example, they increase the power of an RF signal before transmission or to amplify an audio signal before sending it to a speaker. In radio communications, where a linear amplifier is used, the current is measured in kilowatts.
Not just for radio communications
Although linear amplifiers are often associated with radio communications, they are also used in other applications such as audio equipment and laboratory equipment. The term linear usually refers to the common-base linear amplifier, which is capable of producing signals that exactly reproduce the input signal.
A key characteristic of linear amplifiers is their ability to amplify an electrical signal without distortion. This means that the output signal is a faithful representation of the input signal. Linear amplifiers are characterized by their linearity, which refers to the degree to which the output signal is a faithful replica of the input signal.
Different types of linear amplifiers
Linear amplifiers are classified based on the type of input signal they are designed to amplify:
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Voltage amplifiers : amplify a voltage signal
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Current amplifiers: amplify a current signal
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Power amplifiers : amplify a power signal
They can be designed to operate within a specific frequency range, depending on the amplifier type and the application. Linear amplifiers can operate in narrowband or broadband frequency ranges and can be designed for both low- and high-power levels.
Performance factors of linear amplifiers
The performance of linear amplifiers is influenced by several factors, including the amplifier type, frequency response, input and output impedance, and circuit design. A linear amplifier must operate within its specified frequency range and deliver a linear output. It must also be designed to match the input and output impedance of the system in which it is used.
The most important factors are:
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Load impedance: The electrical resistance of the device connected to the output of a linear amplifier. An incorrect impedance can lead to distortion or instability.
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Power supply: This provides the necessary voltage and current to power both the amplifier and the connected load. Insufficient power can result in distorted or weak input signals.
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Operating frequency: Determines the quality of the processed signal. Higher frequencies require more amplification power.
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Input signal: Must be compatible with the amplifier to avoid distortion.
Application of linear amplifiers
Linear amplifiers are widely used in various applications.
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Audio systems : Linear amplifiers are used in both home and professional audio systems to increase sound pressure levels. In a home audio system, a linear amplifier usually consists of a preamplifier and a power amplifier.
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Communications Systems : Used to increase the signal strength of radio waves for communication over longer distances, such as air-to-ground communication or satellite communication.
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Radio broadcasting : Amplifies the power of broadcasts so they can be heard over longer distances.
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Test and measurement equipment : Used to test the frequency response of a device or measure the noise figure of a system.
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Medical equipment and instrumentation : Essential in many medical and scientific instruments.
Linear amplifiers are versatile and reliable components in many electronic devices and are essential for numerous applications. With continued technological advancements, their use in more advanced applications is likely to increase.
Why choose Deltron?
- Wide range of high-quality and original brands
- Technical advice tailored to your application
- Fast delivery and excellent customer service
- Specializing in communications equipment since 2008
- Option to pay later or in three interest-free installments with Klarna or iDeal
Frequently Asked Questions (FAQ)
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What is the difference between a linear amplifier and a regular amplifier?
A linear amplifier delivers a signal that exactly matches the input signal, without distortion – ideal for precision applications.
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Can I use a linear amplifier for my audio system?
Yes, especially for high-quality sound systems or professional audio amplification, a linear amplifier is perfectly suitable.
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Which amplifier is suitable for my radio system?
That depends on your frequency range, power, and transceiver type. Contact us for personalized advice.
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Are linear amplifiers legal for use in the Netherlands?
Yes, provided you comply with the applicable broadcasting license regulations. We are happy to advise you on this.
