Power supply transformer

Abstract

The invention discloses a power supply transformer which comprises magnetic cores and a winding. The power supply transformer is characterized by further comprising temperature safety switches which are arranged on the outer layer of the winding and between the magnetic cores, wherein the temperature safety switches are connected in series with a circuit comprising the power supply transformer. As temperature protecting devices are embedded in the transformer, the power supply transformer provided by the invention can be automatically turned off so as to protect the circuit at a high temperature, and after cooling, the power supply transformer can be automatically turned on so as to realize normal connection of the circuit, thereby preventing the transformer from being burnt due to over-high temperature and shortening the service life because of serious circuit ageing. The power supply transformer can guarantee a power supply to work stably, thereby avoiding the problems that components are necessary to be replaced, the loss of a client is compensated and the like caused by the over-high temperature and the damage of the electronic elements or a main transformer of the power supply transformer, and improving the safety performance of the power supply transformer.

Description

technical field [0001] The invention relates to an electronic transformer, in particular to a power transformer. Background technique [0002] Power transformers supply power to large-scale equipment. Due to the high cost of the product and the generally harsh operating environment, the performance and requirements of the product are very high. Temperature is the most important factor affecting the reliability of power supply equipment, and the main transformer is the main cause of temperature rise. If the temperature is too high, the aging of components will be accelerated and the life will be shortened. According to the analysis of relevant data, the reliability of electronic components will decrease by 10% when the temperature of electronic components rises by 2°C; the magnetic core will cause magnetic saturation due to high temperature and the transformer will stop working. Therefore, when used in a high-temperature environment, due to the influence of the ambient tempe...

AI Technical Summary

Problems solved by technology

If the temperature is too high, the aging of components will be accelerated and the life will be shortened. According to the analysis of relevant data, the reliability of electronic components will decrease by 10% for every 2°C increase in temperature; the magnetic core will cause magnetic saturation due to excessive temperature and the transformer will stop working.

Therefore, when used in a high-temperature environment, due to the influence of the ambient temperature and the heat generated by the transformer itself during operation, the temperature of the transformer will be very high. When the temperature is too high, it may even cause the transformer to burn out.

Moreover, in order to reduce production costs, the current power transformers are designed to be small in size, so that the design is relatively saturated, resulting in higher circuit temperature than conventional

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