The Range Of Green Laser Pointer Is Related To The Power Of It

By Author: long jing
Total Articles: 297
Comment this article

A broadband amplifier, the task to design a single 5V supply broadband low-noise amplifier, the output of 50 resistive load. Second, the requirement 1. Basic requirements. (1) limit the use of high-speed op amp as a first stage amplifier circuit, the use of DC-DC converter power supply for the last stage amplifier circuit; (2) The laser range of 200mW green Laser Pointer is generally above 200m.The amplifier voltage gain ≥ 40dB (100 times), and to minimize the fluctuation band; (3) at maximum gain, the amplifier lower cut-off frequency not higher than 20Hz, maximum cut-off frequency of not less than 5MHz; (4) in the output load, the amplifier's maximum undistorted peak output voltage ≥ 10V. 2. Play a part. (1) The voltage gain of 40dB is reached on the basis of improved upper cut-off frequency amplifier, so that not less than 10MHz; (2) minimize the output of the amplifier noise; (3) amplifier input sine wave, the measured and the number shows the amplifier output voltage peak to peak and RMS, the output ...
... voltage (peak to peak) measurement range of 0.5 ~ 10V, measuring the relative error is less than 5%; (4) other. The range of green laser pointer is related to the power of it.Third, the scoring system design project report theoretical analysis and calculation of the circuit design and test procedures and test results of the program structure and regulatory design report completed Subtotal (1) of the basic requirements to complete the first (2) completion of the first (3) completion of the first (4) Sub-total completion of the first (1) play a part to complete the first (2) completion of the first (3) total scores of other small light source tracking system scores 2 points (point source tracking system (B title) A task to design and make a point of light to detect and indicate the location of the source tracking system diagram shown in Figure B.1 Figure B.1 Schematic diagram of light-tracking system using a single light source B only 1W white LED, fixed on a rack.Higher the power is, further the range of green laser pointer is. LED The current 150 ~ 350mA can be adjusted within the range of initial state of the center line and stand between the light source angle θ is about 60?, light from the ground height of about 100cm, stents can manually along with A as the center, circumference of radius r about 173cm in not more than ± 45? the range of movement, LM can also be moved along a straight line at a distance of 3 cm after the light source, light set on a plane perpendicular to the centerline of not less than 60cm diameter, dark cardboard. light A tracking system placed on the ground, through the use of photosensitive device detects the light intensity to determine the position of light source and 100mW green laser pointer to indicate the position of light source.
The laser range of green laser pointer

Third, the description of the measuring circuit with triangular triangular wave generation circuit connection allows only the signal line and ground, does not allow other connections between the two modules. Fourth, the project design scoring criteria and scoring summary report:So the laser range of 50mW green laser pointer means the laser distance. Comparison of the design and feasibility studies, theoretical analysis and calculation, the basic circuit requirements and the design documents, test methods and instrumentation, test data and test results.