Transformers can be classified based on their working frequency:
Power Frequency Transformer: Operates at standard line frequencies, typically 50Hz or 60Hz.
Intermediate Frequency (IF) Transformer: Used in radio and communication systems, usually operates at 400Hz to 1kHz.
Audio Transformer: Designed for audio applications, with a frequency range from 20Hz to 20kHz.
Super Audio Transformer: Operates above 20kHz but generally not exceeding 100kHz, suitable for high-fidelity audio systems.
High-Frequency Transformer: Typically used in switching circuits, operating at frequencies ranging from several kHz up to over 100kHz.
Transformers can also be classified by their purpose:
Power Transformer: Provides the necessary voltage levels for powering electronic devices and systems.
Audio Transformer: Used in audio amplifiers and sound equipment to transfer signals between stages while maintaining signal integrity.
Pulse Transformer: Designed for use in pulse circuits, where it handles unipolar rectangular waveforms, often seen in digital and control systems.
Special Purpose Transformer: Includes parametric transformers, voltage regulators, isolation transformers, transmission line transformers, and leakage transformers, each serving unique functions in specialized applications.
Switching Power Supply Transformer: Essential component in switch-mode power supplies, used for voltage transformation and isolation.
Communication Transformer: Used in communication networks to provide signal isolation, filtering, and impedance matching.
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