R type power transformer for you to uncover the secret of energy!
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Electrical equipment is used in many places in our daily life, and these electrical equipment can not be separated from a core component, that is, R-type power transformer. Why electrical appliances can not be separated from him, it is because the voltage used by electrical appliances is not the same as the voltage supplied by us, usually R-type power transformer is required to carry out voltage conversion after electrical equipment can be used normally, otherwise because the voltage and the voltage of electrical equipment do not match, it will easily lead to the danger of electrical appliances being burned. What is the role of the power transformer, and what are the characteristics of the power transformer, below we will understand it in detail!
A power transformer can usually be separated from a turn-off power transformer and a bridge rectifier transformer, and a switching power transformer is a power transformer added to a switching tube. In addition to the voltage conversion function of ordinary transformers, it also has insulation isolation and power transmission functions, and is generally used in high-frequency circuits such as switching power supplies. The switching power transformer and the switching tube together form a self-excited blocking oscillator, which adjusts the input DC voltage to high frequency pulse voltage. It plays the role of energy transfer and conversion.
Most switching power supplies are parallel switching power supplies. For parallel switching power supplies, although the circuit board where the load is located is a cold backboard, the switching power transformer circuit is still a hot backboard. If there is no isolation transformer, the circuit in front of the switching transformer can not be measured with the oscilloscope, otherwise it will not only charge the oscilloscope shell, posing a threat to the human body, but also burn out the power supply.
The role of the bridge rectifier transformer is to provide the appropriate supply voltage. Because full wave rectification requires two equivalent supply voltages and intermediate taps, full wave rectification cannot be achieved without a transformer. The premise of the normal operation of the inverter is to turn off the power circuit of the inverter control power. The power off circuit used in inverter is a direct crossover direct inverter circuit. It is a voltage and power converter that converts DC voltage and power to a pulse voltage and then converts the rectifier to another DC voltage. The input and output voltages are isolated by the shutdown transformer, which plays the role of power transmission and voltage/current conversion.