A transformer is a device that is based on magnetic coupling. Transformers are used in both communication and power circuits. In communication circuits, the transformer is used to match impedances and eliminate dc signals from portions of the system. In power circuits, transformers are used to establish ac voltage levels that facilitate the transmission, distribution, and consumption of electrical power.
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A transformer is a device that is based on magnetic coupling.
Transformers are used in both communication and power circuits.
In communication circuits, the transformer is used to match impedances and
eliminate dc signals from portions of the system.
In power circuits, transformers are used to establish ac voltage levels that
facilitate the transmission, distribution, and consumption of electrical power.
𝑴 = 𝒌 𝑳𝟏𝑳𝟐 , 𝒌: 𝒄𝒐𝒖𝒑𝒍𝒊𝒏𝒈 𝒄𝒐𝒏𝒔𝒕𝒂𝒏𝒕
The self-impedance of the mesh containing the secondary
winding is
𝒁𝒓 =𝝎𝑴
𝒁𝟐𝟐
𝟐
𝒁𝟐𝟐∗ 𝒁𝒂𝒃 = 𝑹𝟏 + 𝒋𝝎𝑳𝟏 + 𝒁𝒓
𝒁𝒓 =𝝎𝑴
𝒁𝟏𝟏
𝟐
𝒁𝟏𝟏∗ 𝒁𝒄𝒅 = 𝑹𝟐 + 𝒋𝝎𝑳𝟐 + 𝒁𝒓
• The magnitude of the volts per turn is the same for each coil
• The magnitude of the ampere-turns is the same for each coil
Voltage relationship for
an ideal transformer
Current relationship for
an ideal transformer
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