What is an Autotransformer Used for?

An autotransformer is a special type of transformer in which the primary and secondary windings are on the same winding. The primary and secondary windings of this transformer are directly connected in series and self-coupled. Autotransformers are widely used in many fields. Next, we will mainly introduce the specific applications of autotransformers in eight aspects, including power systems, industrial automation, test equipment, audio processing, communication systems, railway transportation, measuring instruments, and aerospace.

Application scenarios

Power Systems: Autotransformers are widely used in power systems and are mainly used for voltage conversion and impedance matching in high-voltage transmission and distribution lines. Autotransformers are increasingly used in power systems because of their small size and weight, which make them easy to install and maintain.

Automated industry: Autotransformers are mainly used to drive and control motors in the field of industrial automation to achieve speed regulation and positioning of motors. Autotransformers have high efficiency and reliability and can meet the high requirements in the field of industrial automation.

Test Equipment: Autotransformers are mainly used for signal amplification and processing in test equipment, such as oscilloscopes, spectrum analyzers, etc. Autotransformers can provide stable signal output and improve the accuracy and reliability of test equipment.

Audio processing: Autotransformers are mainly used for signal transmission and processing in audio processing equipment, such as audio equipment, recording equipment, etc. Autotransformers can provide functions such as amplification, conversion, and transmission of audio signals, improving the quality and effect of audio processing.

Communication Systems: Autotransformers are mainly used for signal transmission and processing in communication systems, such as mobile phones, wireless routers, etc. Autotransformers can provide functions such as signal amplification, conversion, and transmission, improving the reliability and stability of communication systems.

Medical equipment: Autotransformers are also widely used in medical equipment, such as electrocardiographs, monitors, ventilators, etc., for signal transmission and processing.

Rail transport: Autotransformers are mainly used for the control and protection of traction motors in railway transportation to ensure the stability and safety of train operations. Autotransformers have high reliability and stability and can meet the high requirements in railway transportation.

Measuring instrument: Autotransformers are mainly used for signal conversion and processing in measuring instruments, such as voltmeters, ammeters, etc. Autotransformers can provide functions such as signal amplification, conversion, and transmission, and improve the accuracy and stability of measuring instruments.

Aerospace: Autotransformers are mainly used for signal transmission and processing in the aerospace field, such as navigation equipment, sensors, etc. Autotransformers have high reliability and stability and can meet the high requirements in the aerospace field.

Other applications

Voltage conversion: Autotransformers can achieve voltage conversion by changing the number of turns of the coil, so it is used for voltage adjustment and conversion in various circuits.
Power supply filtering: Autotransformer can be used as a power supply filter to smooth the power supply voltage and reduce ripple and noise in the power supply.
Frequency converter: Autotransformer can be used as a frequency converter to change the frequency of alternating current to achieve speed regulation and control of the motor.
Matching impedance: Autotransformers can be used to match impedance, improve circuit performance, and reduce unnecessary energy loss.
Wireless communication: Autotransformers can be used in wireless communication equipment, such as mobile phones, wireless routers, etc., to achieve signal amplification and transmission.
Instrumentation: Autotransformers are used for signal conversion and processing in instrumentation, such as voltmeters, ammeters, power meters, etc.