green laser pointershould be free from the interruption of the electromagnetism

green laser pointer Used in Trip
The infrared technology ofgreen laser pointeris not that usually used. Step-up circuit. Mainly for use 1AA, 2AA batteries, a flashlight, because most of the LED's operating voltage of about 3.6, AA battery voltage is 1.2-1.5, the voltage is not enough, you need to make the LED voltage to rise to 3.6 to work properly, it produced a This circuit, represented by a small gold circuit, the East into, extended, madman, hunters, and so on. Step-down circuit. Generally used in the dual lithium flashlight on, such as 16340 with 2 flashlights, LED operating voltage of 3.6, while the two 16340 series voltage of about 7.5V, the output voltage of the circuit need to be reduced to 3.6 for the LED power supply. green laser pointershould be free from the interruption of the electromagnetism.
Automatic buck circuit. As the name suggests is when the battery voltage is higher than the LED voltage when the output voltage down to put the LED's operating voltage, when the battery voltage is lower than the LED voltage when the output voltage to rise to the LED voltage, thus creating a constant pressure constant, this is the best circuitry. For the distinction between the circuit level, we used to use efficiency to distinguish, of course, fever, volume and other factors, I am here to talk about what the novice is the circuit efficiency, calculated according to Ohm's law: power equals current multiplied by voltage, the circuit efficiency is refers to the output power (output current multiplied by the output voltage) divided by the input power (input current multiplied by the input voltage), generally a good circuit for more than 90% efficiency is good, and it was asked, and went to where the 10% go, ha, so the 10% to the consumption of the circuit itself, so that the smaller the power consumption of the circuit, the higher the utilization of the battery, the higher the grade of this circuit. The advantage of the infraredgreen laser pointeris the low price.
Flashlight. Most are high-grade aluminum flashlight casing, poor materials are good, the main difference in the surface treatment, generally most of the flashlight as long as no special purpose are common oxidation treatment, black, gray-based. Some surface wear flashlight requires the ability to fade, and it uses three oxidation treatment, the treated surface, hard, and will not appear with the Knife marks, but the price is high. Said first difference and brightness under it, we always stop to ask a certain light does not shine a flashlight business ah ah, etc. What is Q2, more people scratching their heads asking law is, XXX XXX business and several of these businesses Q5 Who is brighter, coma, simply can not answer, so I'll show under the bar, the first LED 5MM early points and made straw hat, but were eliminated early in the flashlight out of a jar, and now Seoul, South Korea is also a small amount of re- do, and do more of this brand of lamp CREE flashlight, CREE brand with NPQR to distinguish brightness grade, which is also broken down in each grade, that is, we say N4 - P3 P4 Q2Q3 --- Q5R2 -, the Department has early out there are N, R series just left very rare.