The regulator is rated at 110W, that is, the output voltage is 220V and the output current is 0.5A. It can automatically adjust the voltage of 100 ~ 270V between 180 ~ 240V, suitable for household appliances such as TV sets, refrigerators, washing machines and other households in unstable power grid areas.
The circuit is as shown. It consists of an autotransformer and a four-stage transistor control circuit. When the grid voltage is relatively normal, about 220V, the second-stage control circuit works, the transistor VT2 is turned on, the drive relay K2 is pulled in, and the output voltage is the same as the grid voltage, which is about 220V. When the grid voltage is lower than 190V, due to the lower secondary voltage, VT2 is forced to cut off, K2 is released, VT3 is turned on, and K3 is pulled in, which increases the output voltage by 30V. By analogy, until the grid voltage is lower than 130V, the secondary voltage is not capable of operating any of the four relays, the output voltage is increased by 90V, and the output voltage is 220V. When the grid voltage is higher than 240V, VTl is turned on, Kl is pulled in, and the output is reduced by 30V.
The transformer core adopts XCD12.5×25×50; the boosting part of the primary coil is made of enameled wire with a wire diameter of Φ0.58; the rest is wound with Φ0.29; the secondary is wound with Φ0.27mm. N0=1751åŒ, N1=N2=N3=N4=276åŒ; N5=153åŒ, N6=41åŒ.
The process of wireless signal transmission is very simple. WiFi signals radiate into the surrounding space through the medium of the router antenna, and the router antenna has a great influence on the signal strength of WiFi. A wireless router transmits radio frequency signals from a radio transmitter through a feeder to an antenna, which radiates as electromagnetic waves. When the electromagnetic wave reaches the receiving point, it is picked up by the antenna, receives only a small amount of power, and is sent through the feeder to the radio receiver. Therefore, in the wireless network engineering, it is very important to calculate the transmitting power of the transmitting equipment and the radiation capacity of the antenna. In the wireless network environment, the antenna can enhance the wireless signal, so we understand it as a wireless signal amplifier. One of the basic functions of a transmitting antenna is to radiate the energy obtained from the feeder into the surrounding space. Another approach is to radiate most of the energy in the desired direction. Antennas have different radiation or reception capabilities for different directions in space. Antennas can be omnidirectional and directional, depending on their directionality. Routing omnidirectional antenna: Antennas that do not have maximum directional radiation and receive on the horizontal plane are called omnidirectional antennas. Because omnidirectional antenna has no directivity, it is often used in the center station of point - to - multipoint communication. For example, if you want to establish a wireless connection between two adjacent buildings, you can choose this antenna.
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