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PASSIVE COMPONENTS

Passive components and elements are electronic components that do not require an external power source to function. They are used to store or transfer energy, and are essential in the design and manufacture of electronic circuits. Passive components include resistors, capacitors, inductors, transformers, and filters, among others.

Types of Passive Components:

There are several types of passive components used in electronic circuits, including:

Resistors: Resistors are used to limit the flow of electric current in a circuit. They are commonly used in voltage dividers, amplifiers, and filters.
Capacitors: Capacitors are used to store electric charge and energy in an electric field. They are commonly used in filters, oscillators, and power supplies.
Inductors: Inductors are used to slow down power spikes by storing energy in an electro-magnetic field. They are commonly used in filters, oscillators, and power supplies.
Transformers: Transformers are used to transfer energy from one circuit to another through electromagnetic induction. They are commonly used in power transmission to step up or step down and therefore very common in power supplies and audio equipment.
Filters: Filters are used to selectively pass or reject certain frequencies in a signal. They are commonly used in audio equipment, radio communications, and power supplies.

Applications of Passive Components:

Passive components are used in a wide range of electronic applications, including:

Consumer Electronics: Passive components are used in a variety of consumer electronics products, such as smartphones, televisions, and audio equipment. Capacitors, inductors, and resistors are commonly used in these products to filter and shape signals, and to provide energy storage.
Industrial Automation: Passive components are used in industrial automation applications to control and monitor manufacturing processes. Resistors, capacitors, and inductors are commonly used in these applications to regulate voltage and current, and to filter and shape signals.
Automotive: Passive components are used in automotive applications to regulate voltage and current, and to filter and shape signals. Resistors, capacitors, and inductors are commonly used in these applications to support the operation of engine control units, infotainment systems, and advanced driver assistance systems (ADAS).
Aerospace and Defense: Passive components are used in aerospace and defense applications to control and monitor systems and equipment. Resistors, capacitors, inductors, and transformers are commonly used in these applications to regulate voltage and current, and to filter and shape signals.

Popular Brands that Manufacture Passive Components:

There are many companies that manufacture passive components, ranging from large multinational corporations to smaller specialized firms. Some of the most well-known companies in this field include:

Murata: A Japanese company that specializes in the manufacture of capacitors, inductors, and filters for a wide range of electronic applications.
TDK: A Japanese company that produces a wide range of passive components, including capacitors, inductors, and transformers for various electronic applications.
Vishay: An American company that produces a wide range of passive components, including resistors, capacitors, and inductors for various electronic applications.
Panasonic: A Japanese company that produces a wide range of passive components, including capacitors, inductors, and resistors for various electronic applications.
AVX: An American company that produces a wide range of passive components, including capacitors, inductors, and filters for various electronic applications.

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