Is the transformer output DC or AC?

Is the transformer output DC or AC?

Is the exchange, after the diode rectifier into a DC.

There is also a direct communication, depending on what is the use of what. For example: for power distribution with the step-down transformer input and output are AC; and electronic circuit transformer is a double winding or multi-winding transformer, mostly safety transformer, the output is DC; China's auto-transformer is AC transformer The Autotransformers are not allowed to be used as safety transformers. So the output for the exchange.

As long as the circuit used in the transformer, the transformer output is certainly the AC voltage. This is because the DC is not through the transformer (no mutual inductance), so as long as the power circuit has a transformer, its output is certainly the AC voltage. Want to make the power supply output voltage for the DC voltage, through the rectifier circuit, the AC voltage rectifier rectifier voltage can be. Transformer (Transformer) is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.