It is the selling point of cell phone jammer

 It is the selling point of  cell phone jammer
The laser pulse ranging principle is controlled by a laser pulse timer to open the door to accept the return of the laser pulse control timer closed, measure the round-trip propagation time of the laser beam in the test distance, to complete ranging. The formula is as follows: the structure of the laser pulse range finder. A simplified block diagram of the laser pulse range finder is shown in Figure 3.9. Its process as follows: When the rangefinder at the target, the laser on the issue of a strong very narrow pulses of light, this light pulse compression divergence angle after launch telescope. Out in the light pulse emission at the same time, in which a tiny fraction of the light immediately by two reflector into the receive telescope after the filter to reach the photoelectric converter into electrical signals, ie, light pulses into electrical pulses. The electrical pulse after after the amplifier shaping into a time measurement system to start the timer.  In addition, taking into account the nature of the semiconductor laser, in order to achieve the conservation purposes, we added part of a slow start in the circuit. Figure 4-8 below is the slow start of the current source circuit, the start of Q1 is cut-off, C23 is charging through R25, C7, no charge, Q1 is the e pole is equivalent to the ground. When the voltage is greater than on the C23 Q1 threshold voltage Vbe C7 start charging until Q1, b voltage of about-12V (ie, the voltage on C23 is about 12111N5242B the regulator value), stop charging, the C7 is maintain a voltage makes the Q1 turns on. Closes the circuit, the capacitance of Q1 e extremely discharge.
Laser cutting machine users, including many applications of the electrical manufacturing, the elevator industry, transport machinery, oil industry, textile machinery, food machinery, medical equipment, lighting, decoration, packaging industry, as well as laser processing stations and research institutes. CO2 laser cutting technology is one of the most widely used technology for laser processing applications. As far as I know: Europe has installed 12,000 units and 11,000 units in North America to install the installation of Japan 10000. China's installation of over 500 units. Mainland China to install approximately 800 units, power gradually elevated to the 2000W 3KW, 4KW CO2 laser cutting machine has become a major domestic hot products products can be seen from the above. For the safety and security factors, it is highly recommended that the customer uses this kind of cell phone jammer  together with the safety key lock.