What is a rectifier

A rectifier is a device that converts alternating current into direct current. It can be used to power devices and detect radio signals. Rectifiers may be made of vacuum tubes, igniters, solid state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current into alternating current is called an inverter. In the standby UPS, only the battery needs to be charged, and the load does not need to be supplied with power, so there is only a charger. In the double conversion UPS, this device not only supplies power to the inverter, but also charges the battery, so it is called rectifier/charger. A rectifier is a rectifying device that simply converts alternating current (AC) to direct current (DC). It has two main functions: first, it converts alternating current (AC) into direct current (DC) and supplies it to the load after filtering, or to the inverter; second, it provides charging voltage for the battery. Therefore, it also acts as a charger. Rectifiers: differences between rectifiers and transformers First of all, we need to clarify their respective concepts before we can distinguish them. 1. Transformers, Narrow concept: The concept of power transformer is that it can convert alternating energy of one specification into alternating energy of another specification through electromagnetic coupling, such as the conversion of voltage and current, but in any case, energy is conserved; Generalized concept: Any device capable of voltage transformation can become a transformer; for example, switching power supply, resistor step-down, three-terminal voltage regulator, etc; 2. Rectification, Rectification is the process of converting an alternating signal into a direct current signal, and a rectifier is a device that can convert an alternating signal into a direct current signal; 3. And then look at the difference, The rectifier, as mentioned above, converts an AC signal into a DC signal; For example, a rectifier (rectifier bridge) may be used to convert mains AC to DC; Rectifier transformers can also perform voltage conversion after “converting AC to DC”, for example, they can reduce the rectified voltage to 5V, 9V, or boost it to,, or other desired voltages. Of course, the transformer here should be understood in a broad sense, because the voltage has been rectified to DC voltage.