The toggle switch manufacturer will introduce the general knowledge about the circuit to you today. The detailed details will be introduced in the following. I hope you will pay attention to us and support us for a long time.
The heat resistance test of the toggle switch is conducted at 85 + ﹤ 2 ℃ for 96 hours, and then at normal room temperature + 1 hour. Requirements: no abnormal appearance, meet the mechanical and electrical performance. The cloth cold resistance test was placed at 40 + 2 ℃. After 96 hours in 90-96% relative humidity environment, the sample is tested in normal environment for 1 hour, which is characterized by stable performance, convenient use and low cost. It can be used to cut off and connect the power supply, and can also be used to change gears of the recorder. In particular, the volume and cost of the high-power stabilized power supply is much smaller than that of the linear power supply under the same output power. Only taking the early 20kHz switching power supply as an example, compared with the performance of linear power supply, it can be seen that many technical indicators of switching power supply are better than linear power supply.
At present, the operating frequency of the toggle switch has been increased to above 1ookhz, C is the bypass capacitance. Mcp1321 and RST end phase silicon of MCU. When + 5V voltage of DC power socket is lower than + 29V or higher than + 5.8v, mcp1321 will reset immediately. The I / O port of MCU continuously sends negative pulse to WDL terminal of mcp1321. Reset the watchdog timer regularly. Once the program flies, RST signal sent by self-locking switch mcpl321 can reset the MCU. R2 t is the internal pull-up resistance of WDI end and R is the external pull-up resistance of RST end.
(1) understand the basic components and functions of each part of the circuit, the rating of electrical equipment and the working state of the circuit; be familiar with the basic concepts of circuit model and centralized parameter circuit; master the difference between ideal circuit components and actual components; firmly grasp the volt ampere characteristics of linear components; understand the concepts and characteristics of ideal voltage source and ideal current source; be familiar with the power model and the reality The corresponding relationship of power supply the equivalent exchange method between power models, master the difference between the concept of electric energy and electric power. Understand the thermal effect reaction of current, and understand the application of thermal effect of current in practical engineering and real life.
(2) understand the content and extended application of Kirchhoff's current and voltage laws, and master the methods and skills of applying the two laws to analyze complex circuits.
(3) master the importance of the reference positive direction of voltage and current in circuit analysis and the connection with the actual direction of voltage and current, understand the steps and applicable occasions of superposition law and Davinan theorem in circuit analysis, and be able to use them to analyze and calculate the circuit.
I. ability training requirements
(L) through teaching experiment and practice, understand the necessity and importance of strictly abiding by electrical operation rules and regulations, understand laboratory operation rules, maintain good working habits, and have preliminary skills of experimental operation.
(2) have the skills of using circuit principle box and digital multimeter.
(3) have the measurement skills of voltage, current and resistance, and the ability to find out the cause of experiment error in the experiment.
(4) it has the ability to develop its own experimental steps to verify KCl KVL law. Insulating shoes must be worn when working. In general, live working is strictly prohibited.
II. More than two persons shall be required for climbing operation, and safety helmets shall be worn. Safety measures shall be taken for the power use site. All electrical equipment shall be well grounded. Any problem found shall be repaired in time, and live operation is not allowed.
III. during the inspection, the power supply shall be cut off and the sign "no closing" shall be hung.
IV. the power supply for maintenance shall be checked carefully and no problem shall be found before power supply.
V. in case of any abnormality, it is necessary to find out the cause first, and it is strictly forbidden to transmit power without finding out the cause, so as to avoid serious consequences.
Vi. overload operation of all kinds of mechanical equipment is strictly prohibited, and the power supply of those who violate the safety operation regulations has the right to stop.
VII. One machine and one brake must be provided for the on-site transmission machinery. It is strictly prohibited to use one brake for multiple purposes.
VIII. Be responsible for regular testing of derrick limit, lightning rod device and leakage switch, and replace them in time in case of failure.
IX. in case of electric shock, effective first aid measures shall be taken immediately.
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