Electronic transformers have an electronic device that transforms the cross -flowing voltage of the municipal electricity into DC and then via semiconductor switching device, as well as electronic components and high -frequency transformers winding.Species of direct intercourse inverter circuit.In simple terms, it is mainly composed of high -frequency transformer magnetic core (iron core) and two or more coils. They do not change their positions from one or two or more.Magnetic induction is transformed into AC voltage and current.At the output end of the high -frequency transformer, one or two or more electric circuits,
Electronic transformer structure
Iron Heart: It is the main magnetic circuit in the transformer.It is usually made of high silicon content, 0.35 or 0.5mm, and the surface is stacked with hot -rolled or cold -rolled silicon steel sheets on the surface.Winding: Winding is the circuit part of the transformer.
Electronic transformer production
The production of electronic transformers is not difficult. Let me briefly introduce the production process.1. Winding 1. Material Confirmation 1.1Bobbin specifications confirmation. 1.2 When a PIN that is not used must be cut, it should be cut off before the winding is not used to prevent scratch Wire or cut the wrong foot when cutting the line., And it can avoid the wrong foot position when winding. 1.3 confirms that the Bobbin is complete: there must be no damage and cracks. 1.4 to correctly insert the Bobbin into the cure. Generally, it is specially marked as a foot (oblique angle is PIN1).Then 1 foot facing the machine.
Electronic transformer repair
Generally, the electronic transformer is broken, and the inspection must be carefully, because when such circuit fails, it often causes damage to multiple components, (which is the reason why it is generally not repaired).First use a multimeter to find out the disconnection and short -circuit failure (such as the triode breakdown, the resistance burns, the capacitance, the diode, etc.) to eliminate the fault, and then disconnect the bridge load to see if the 300V is normal, and then it is normal. ThenSee if the rectifier diode and filter capacitor of the output end are good.After excluding these obvious faults, the voltage of each point of each point is tested. As long as you work hard, you can generally repair it.It is more difficult to determine that the capacitor leakage is leak, and it is not possible to change it.
Electronic transformer model
Electronic transformers are classified by working frequency: Working frequency transformer: working frequency is 50Hz or 60Hz.Mid -frequency transformer: operating frequency is 400Hz or 1kHz.Audio transformer: The operating frequency is 20Hz or 20kHz.Ultra -audio transformer: above 20kHz, not more than 100kHz.High -frequency transformer: The operating frequency is usually above KHz to hundreds of KHz.Electronic transformers are classified by use: power transformer: transformers used to provide electronic devices.Audio transformer: transformer for audio amplifier circuits and audio equipment.Pulse transformer: The transformer working in the pulse circuit is generally a single polar rectangular pulse wave.Special transformers: transformers with a special function, such as parameter transformers, voltage voltage transformers, ultra -isolation transformers, transmission transformers, leakage transformers.Switch power transformer: used for transformers in the power supply circuit.Communication transformer: used for transformers with straight and filtering in the communication network.
Electronic transformer principle
The electronic transformer is the switching voltage voltage power supply.It is actually a inverter.First turn the AC electricity to DC electricity, and then use electronic components to form a oscillator DC electricity to high -frequency AC electricity.The voltage required by the switch transformer output is then used for secondary rectification.The switching voltage voltage supply has the advantages of small volume, light weight, low price, etc., so it is widely used in various electrical appliances.The principle of switching voltage voltage power supply is more complicated.

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