The vertical shaft crusher, also known as the vertical impact crusher, is commonly referred to as the sand making machine. It is the crystallization of the wisdom and correct decisions of experts in the field of mining machinery equipment research and development for many years. It is a high-energy and low-consumption equipment with international advanced…
Everyone knows that,the regulating device of the transformeris divided into the transformer “no excitation” regulating device and the transformer “with load” regulating device. Both refer to the transformer tap switch voltage regulation methods, so what is the difference between the two? Let us first understand the definitions of the two: ①”No excitation“voltage regulation, is to…
【Action Description】 The figure shows a traffic light controltiming diagram,the traffic light program begins to act after the startsignal is conducted, and the action requirements are as follows: 1) North-south red lights and east-west green lights are lit at the same time, 25s later. 2) The green light of the east-west direction begins to flash…
Action Description As shown in Figure 2-5-1, a sewage tank, which is equipped with two sewage pumps to achieve the discharge and treatment of its sewage, specificallycontrol requirements are as follows: 1) Long pressto startthe button for 3 seconds, the device starts, the operation indicator light Y1 (green light) is on, press the second button…
Analog isolator is an electronic component used to isolate analog signals between two circuits to prevent interference between circuits. It usually consists of two analog signal converters, which can convert analog signals into digital signals and then convert them back into analog signals to achieve isolation. Signal isolator is a kind of linear optocoupler isolation…
In agricultural production, greenhouses have played a huge role in promoting the development of agriculture. In the fields of high-value, off-season vegetables, high-value fruits, etc., greenhouses are increasingly indispensable. It has many benefits. For example, the greenhouse can be regarded as an independent ecosystem to a certain extent, which can isolate pests and diseases to…
Intelligent parking guidance system is a kind of advanced technology, through real-time data analysis and intelligent algorithms, to provide accurate parking information and guidance to car owners, helping to solve the troubles and challenges in the parking process. This article will reveal the black technology of intelligent parking guidance system , introduce its working principle,…
Each relay has a name, and generally the normally open point and normally closed point share the same name with the relay. If there are 10 relays, there will be 10 names, as long as each relay and contact is not confused with other relays. Wiring diagram of small solid state relay Small relay wiring…
PLC programming algorithm (1): switch value There are nothing more than three large quantities in PLC: switching quantity, analog quantity, and pulse quantity. Once you understand the relationship between the three, you will be able to master PLC proficiently. 1. Switching quantity is also called logical quantity, which refers to two values, 0 or 1,…
In power systems or in user main transformers higher than 110 kV , most of them will be equipped with on-load voltage regulating devices (transformer on-load voltage regulating switches ), because this can ensure that when the power is supplied normally, it will help to By adjusting the tap position, the voltage of the busbar…