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introduction：one、Take note 1、Sliders and rails may fall under their own weight after tilting，Please be careful.。 2、Knock or drop the slide even if the outside look is not damaged，However, it may cause loss of function，Please be careful.。 3、Do not disassemble the slider yourself，It may cause foreign bodies to enter，Ball drop or assembly accuracy adversely affects。 two、Lubrication precautions 1. Please wipe the anti-rust oil before sealing the lubricating oil(fat)Use。 2. Do not mix lubricants of different properties(fat)Mixed use。
2018-06-26 Reading quantity 418
introduction：There are three modes of heat dissipation for switching power supplies：Natural cooling、Fan cooling、A combination of fan and natural cooling。 1、Natural cooling Natural cooling method is the traditional cooling method in the early stage of switching power supply，This method mainly relies on a large metal radiator for direct heat conduction heat dissipation。Heat exchange capacityQ=KA△t(KHeat transfer coefficient，AHeat transfer area，△tTemperature difference)。When the rectifier output power increases，The temperature of its power element will rise，△tThe temperature difference also increased，So when the rectifierAWhen the heat transfer area is satisfied，Its heat dissipation is no time lag，The power element has a small temperature difference，The thermal stress and thermal shock are small。However, the primary defect of this method is the large size and weight of the heat sink。Transformers are wound to reduce temperature rise as much as possible，Prevent temperature rise from affecting its operating performance，So its d
2018-06-25 Reading quantity 193
introduction：Due to the high voltage circuit breaker operation is very frequent，It is affected by mechanical factors and electrical factors，Jumping often occurs。For a circuit breaker already in operation，When the fault is on the load side of the current circuit breaker，Once there is a jump is bound to cause skip tripping，Expand the scope of accidents and power outages，Therefore, it should be eliminated as soon as possible。
2018-06-25 Reading quantity 259
introduction：The following small series to introduce the domestic torque sensor method，Do not know the pro hurry to study seriously，It might help you！
2018-06-25 Reading quantity 269
introduction：The difference between contactors and relays A relay is an electrical control device，Is when the input quantity（Excitation quantity）When the changes meet the specified requirements，An appliance that causes a predetermined step change in a controlled quantity in an electrical output circuit。Electromagnetic relays and contactors，They probably work the same way。Sometimes its the same device，Used in this circuit as a contactor，Another circuit is used as a relay。 The main function of the relay is to detect signals、transmit、For transforming or processing，
2018-06-23 Reading quantity 256
introduction：You may be exposed to this proximity switch in your daily life，Its usually found in shopping malls and some warehouses，But there are also switches between office buildings in a company，This is what we call the design principle of automatic opening and closing。In general, there are many kinds of relatively different types of switch special products on the market and the specified situation of the switch。
2018-06-22 Reading quantity 318
introduction：Fault analysis of Delta frequency converter，Inverter overcurrent fault can be divided into acceleration、retard、Constant velocity overcurrent。It may be because the acceleration and deceleration time of the inverter is too short、Sudden change of load、Uneven load distribution，Output short circuit caused by Germany。At this time, the acceleration and deceleration time can be extended、Plus energy consumption brake element、Carry out load distribution design、Check the line。If the load is disconnected or overcurrent fault，The inverter circuit is bad，Need to replace inverter。
2018-06-22 Reading quantity 438
introduction：Capacitive sensors use various types of capacitors as sensing elements，A conversion device that converts a measured physical or mechanical quantity into a change in electrical capacity，Its essentially a capacitor with variable parameters。Capacitive sensors are widely used for displacement、Angle、Vibration、speed、stress、Component analysis、Measurement of medium characteristics。Commonly used are parallel plate capacitors or cylindrical capacitors。
2018-06-22 Reading quantity 218
introduction：Parameters of Siemens servo motors
2018-06-21 Reading quantity 389
introduction：Touch divides switches into two broad categories：Resistive touch keys and capacitive sensing keys，Namely, sliding button and touch button。 The touch switch of liquid crystal display adopts capacitive induction technology。We know that the human body conducts electricity，The circuit below the capacitive induction key can produce a uniform electrostatic field，When we move our finger over the key，The capacitance of the key surface is changed，The relevant circuits inside the display make judgments based on this change in capacitance，Implement the intended function。
2018-06-21 Reading quantity 254
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