Circuit design of portable alcohol tester

As long as the subject asks the sensor probe composed of gas sensors to blow a breath, the tester can show the depth of the subject’s drunkenness and determine whether the subject is still suitable for driving. The circuit of practical alcohol tester is shown in the figure, which is the ideal gas of practical […]

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Design of flash circuit for portable camera based on tps65552a

In weak light conditions, high-end equipment of film or digital photography needs xenon flash tube to shoot. Xenon flash tube can provide instantaneous high-intensity light source, which is the most basic requirement when shooting distant, high-speed moving or low light objects. The spectrum produced by the xenon discharge tube is very close to that of […]

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Shopping guide for portable Bluetooth speakers in 2021

With the arrival of spring, the earth wakes up, and many people begin to plan to travel. A walk on the go trip reverberates in our ears, how can the journey be accompanied by less music. It’s convenient to listen to music on your mobile phone, but dullele is not as good as zhonglele. If […]

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Samsung has been authorized to control the backlight of portable terminals

On February 26, Samsung Electronics Co., Ltd. obtained an invention license, which is called “portable terminal capable of controlling backlight and method of controlling backlight”. The patent was applied as early as 2006 and published in 2015. The license notice number is cn105049614b. From the perspective of background technology, the traditional portable terminal with backlight […]

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Knowledge of portable wearable intelligent devices

Wearable device is a kind of portable device directly worn on the body or integrated into the user’s clothes or accessories. Wearable device is not only a kind of hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. Wearable device will bring great changes to our life and perception. […]

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Notes and usage of portable charger for new energy vehicles

Now new energy electric vehicle sales continue to grow. At present, the charging methods include DC fast charging pile and AC slow charging pile. Another way is to use the household portable charger and plug it into the household air conditioner socket directly. But at present, more and more automobile manufacturers no longer give away […]

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Xiaomi has released a portable 3-in-1 scientific microscope

Recently, the science can Portable 3 in 1 science microscope has been put on the shelves. It is a combination of desktop, handheld and connected mobile phones, which is suitable for multi scene exploration. The basic version is 99 yuan, and the luxury version is 119 yuan (10 more slides). Compared with the traditional microscope, […]

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Intel redefines ultraportable Game Book

A few days ago, redmi launched redmipro notebook, which uses Intel 35wtdp’s tiger Lake processor. This is one of the earliest 10nmh35 notebook, and this notebook is Intel’s ultra portable game book. Today, Intel officially confirmed that they, together with their partners, have redefined a new notebook, the ultraportable gaming laptop, which translates into an […]

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Recommended portable projectors for students

The new semester has begun, many students have returned to the campus, began a new semester of study and life. I recommend that you bring a portable projector with you when you go back to school. It can make you experience the fun of a 100 inch screen in a small dormitory. No matter after […]

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Millet series inpril portable electric tooth punch M6

I believe that all my friends who have dental problems have heard of tooth punch. As a “water dental floss”, it can mainly clean teeth, avoid tooth decay, prevent the growth of bacteria in the oral cavity, and avoid halitosis and inflammation. Therefore, many people will choose to start with the tooth punch. However, the […]

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