March 22, 2010 -
PRLog -- This single-lamp high power LED flashlight most of the power supply also used 3 AAA batteries, but I could still use a rechargeable lithium battery-powered radio. There are a http://www.global-
e-world.com/
Mini-Flashlight/
small number of single-lamp high power LED flashlight is used 3 AA batteries, and at the same time with AA Ni-MH battery and special charger. The current single-lamp high power LED flashlight a reference price of more than 30 yuan to more than 300 yuan. Usually home-made single-1W ~ 3W high power LED flashlight lamp sells for more than 30 yuan to more than 50 yuan, 5W's domestic price of a single lamp high power LED flashlight is about more than 50 yuan to more than 90 yuan.
This single-lamp high power LED flashlight's biggest advantage is concentrating better-performing, but the mask will depend on the production of poly-flashlight is excellent. Create a more formal single-lamp high power LED flashlight, the spotlight effect close to normal flashlight, but the brightness even higher. This flashlight particularly suitable for "backpackers"
field lighting, look for articles or contact with each other using light signals and so on.
3. Compact LED flashlight
Compact LED flashlight is the use of an AA battery or AAA batteries multi-lamp a small flashlight, or using three button batteries pocket-sized flashlight or keychain flashlight. Using a
http://www.global-e-world.com/Mini-Flashlight/ AA battery or AAA batteries multi-lamp Small flashlight, shells are mostly made of aluminum alloys, the number of lamp cap are mostly five or eight. This uses one AA battery or a AAA battery flashlight more than a small lamp, due to a single cell voltage is only 1.5V, not directly lit LED, flashlight so there is a simple electronic boost circuit. The efficiency of this boost circuit is not high, it looks like although only one battery, in fact a larger power (measured current of about 300mA or so), battery life is shorter. As long as the battery voltage is lower that the flashlight's brightness will drop more.
Such a condenser compact LED flashlight effect is poor, power consumption is also large, but in the city for temporary emergency lighting or at night to see things such as prolonged use is not the case, there are still some practical value. This little flashlight from the use of time and often kept up the temporary use, the better http://www.global-
e-world.com/
Mini-Flashlight/
it is best sealed alkaline batteries (usually can be kept in 2023 will not be expired), do not use ordinary carbon-zinc batteries, so do not be a long time outflow of electrolyte damage flashlight. This compact LED flashlight a reference price of 5-20 yuan.
