What are the characteristics of switching transformers? What glue is used for assembly of switching transformer?

The switching transformer used in the switching regulated power supply circuit belongs to the oscillation transformer used in the pulse circuit. Its main function is to provide energy to the load circuit (that is, to provide working voltage for each circuit of the whole machine) to achieve isolation between the input and output circuits.

The secondary (secondary) side of the switching transformer has a number of power release windings, which can produce multiple pulse voltages, which are supplied to the relevant circuits in the rear stage after rectification and filtering.

Single-excited transformer switching power supply is equivalent to the circuit shown in Figure 2, where we regard the DC input voltage through the control switch on and off, as a series of DC pulse voltage, that is, unipolar pulse voltage, directly to the switching transformer power supply. Here we especially call the transformer a switching transformer to show that the circuit shown in Figure 1 is different from the general power transformer circuit in terms of working principle.

In the general power transformer circuit, when the input voltage at both ends of the power transformer is 0, it means that the input end is short-circuited, because the internal resistance of the power supply can be seen as 0; In the switching transformer circuit, when the input voltage at both ends of the switching transformer is 0, it means that the input end is open, because the internal resistance of the power supply can be seen as infinite

This type of transformer bonding fixing is generally recommended to use a single component of epoxy resin adhesive for fixing, the relevant parameters are as follows for reference

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