I believe no one wants to see this happen. On June 26, a number of media reported that a bus travelling on the expressway in Yizhang, Hunan province, collided with the road guardrail. As a result, the fire broke out, causing a massive tragedy of 35 people to be killed by the time of the dispatch. An accidental traffic accident, a ruthless fire, took away the livelihood of the people. Under the pity of people's infinite grief, it also caused endless thinking: How can people obtain for themselves in the fastest time? Escape opportunities, what are the methods of self-help? The journalist of Health Magazine interviewed some experts on this issue and popularized some basic escape knowledge for everyone: for example, 1. If possible, be sure to orderly and quickly get off the car door. 2, calm and witty to find the nearest exports, such as emergency exits, windows. 3, the body accidentally caught fire, you can roll out the fire on the spot. In addition to these knowledge, careful reporters noticed that when experts talked about the need to use the windows to escape, an assisted escape tool, Li Renhua, broke the window and pen and was repeatedly referred to as a broken window artifact. A pen can actually have such a role, which has particularly attracted the interest of reporters. In the past, on the bus or other vehicle, the escape tool that broke the glass may have been the first thought of the escape hammer. However, why do more people do not mention the escape hammer (also known as the safety hammer)? It is generally recommended instead. Li Renhua broke the window pen? I explored with a curious reporter. The reporter found that in the CCTV10 "I love invention" column 20141230 this period of the program, the escape hammer in the car encounters a critical moment, often can not open the glass. What's going on here? Because the escape hammer was stored for too long, the temperature of the handle was too high, and the handle appeared to be in an aging condition. Therefore, not only did the glass not smash, but the handle was broken. This undoubtedly added obstacles to escape and delayed time. That is, in this situation, Li Renhua broke through the window and pen. Li Renhua's broken window pen is elegant in appearance design, easy to carry, not to mention, but also has a normal pen writing function, and more versatile and diverse than the normal use of the pen. In addition to writing, it can also be used on navigation, mobile phones, and tablets. What's more, Li Renhua's broken window and pen is designed with a super-strong spring tungsten steel head. When he touches glass, it breaks the glass, and it has the same effect no matter where he hits a window. In this way, people will be very convenient when they use it, so as to win more time and opportunities for people to escape, this is also the case. They are recognized and trusted by experts and called it a broken window artifact! These seemingly fabulous functions are not bragging but are actually visible effects. You can also find and learn more about Li Renhua's broken window pen by looking at the relevant certificate patent number. When a reporter asked the R&D team about the original intention of developing this product, their answer was “We just want to create a product that is responsible for life.†The simple words are praiseworthy! Don't want to see too many tragedies, let everyone be more responsible for their own, more than a love! We hope that more artifacts such as Li Renhua's broken window to improve the society will accompany us and be responsible for life. The circuit responsible for powering a laser diode is protected against reversed polarity. High current Schottky diode Laser Module,High Quality Laser Module,Laser Module Details, Changchun Ruiqi Optoelectronics Co., Ltd. Changchun Ruiqi Optoelectronics Co.,Ltd , http://www.ruiqi-optics.com
of an extremely low forward voltage secures the laser diode against connecting reversed voltage with the aim of protecting frequently the most expensive part of the entire device - a laser diode. In turn, the low forward voltage does not cause excessive heat loss during normal operation.
The analog input is protected by a 5V1 Zener diode. On occasion, there appears a voltage higher than 5V. Despite everything, this input should not be used with higher voltages.
A microcontroller ensures the proper operation of the entire system.
At the start, the microcontroller is checking the connection with a thermistor. If there is no thermistor used the WARNING LED is blinking but the driver is still working. If the connection with the thermistor is lost during normal work, the microcontroller turns off the laser diode supply circuit and does not allow for its further load. It also switches off the DIODE LED and switches on the WARNING LED. The TEC line is also switched off. The same situation happens when the thermistor reaches the temperature above 50 degrees Celsius.