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Several key factors to consider for outdoor flashlights

1. Light output: In lumens (LM), it represents the energy collection of light at all angles emitted by the flashlight light source. The light output of different flashlights varies from 20 lumens for reading to thousands of lumens. 2. Beam distance: in meters (m), it indicates the distance from the origin of the beam to […]

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Introduction of flashlight

Torch: also referred to as torch, is a handheld electronic lighting tool. A typical flashlight has a battery-operated bulb and focusing mirror, and has a handle-style housing for handheld use. Although a fairly simple design, it wasn’t invented until the late 19th century because it had to combine the invention of the battery with the […]

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Development overview of electric wheelchair

1. The invention of electric wheelchairs was around the beginning of the 20th century. 2. The United States issued the first patent certificate for electric wheelchair in 1940. 3. Reasons why the early products are not paid much attention: the healing condition of the severely disabled people is not good, and the early products are […]

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Benefits of Electric Wheelchairs

The electric wheelchair is based on the traditional hand-push wheelchair, and is equipped with high-performance power drive device (motor), intelligent control system, battery, electromagnetic brake and other components, and is transformed and upgraded. The electric wheelchair has an artificial intelligence control system, which can make the wheelchair complete various functions such as forward, backward, steering, […]

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The concept and classification of power tools

The concept and classification of power tools: A tool that is held and operated by hand, uses a low-power motor or electromagnet as a power, and drives the work head through a transmission mechanism is called a power tool. Its classification is generally divided into three categories according to the corresponding working materials: masonry tools, […]

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Precautions for the use of UPS

Notes on the use of ups uninterruptible power supply: 1. UPS uninterruptible power supply should be equipped with a certain margin, such as 4KVA load, UPS power supply should be configured with more than 5KVA. ​​ 2. The UPS power supply should avoid frequent startup and shutdown, preferably in a long-term startup state. ​​ 3. […]

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