What brand of laptop is good? What brand of pen is best to use

Victorious electricians of half industrial enterprises use tools of this brand.

The direct key can measure the highest voltage of the conductor in contact, the lowest 12 volts, the highest 202, to press by hand. The induction key can sense whether there is electricity near one to two centimeters, and it should also be pressed by hand, and the direct contact of the induction key with the live conductor will also show the voltage, but it is generally lower than the direct key contact, not credible, and with the direct contact of the induction key, there will also be a live indication without pressing the "induction key" by hand, this is because of the strong voltage, the induction key is mainly used to quickly check a wire, whether there is an open circuit in the middle, saving the labor intensity of peeling and checking, because you can measure which place is broken without direct contact, Just pick it up! Very easy to use.

1. Snow White PVR 155 Straight Liquid Rollerball Pen

The water is stable, even if it is written quickly, it will not be a paragraph line, strictly speaking, the needle tube type of water is more fluent, the resistance of this pen is relatively large, the pen grip is a smooth vertical idea, and the hand is sweaty and easy to slip after a long time.

2. Chenguang K35

Pros: Cheap, very smooth writing, comfortable pen grip.

Disadvantages: The nib is too slippery, the appearance is relatively ordinary, and the drying speed is average. Sleepy.

3. Hobby x50

Advantages: After scratching, the water is smooth and even, and the profile is still stable.

Disadvantages: The pen grip is easy to slip.

4. True color 550A

The damping is relatively large, slightly smaller than that of the Snow PVR155, which is relatively more comfortable to write. The whole pen is black, and there is a layer of coating on the surface that seems to be skin-like, so it is still very comfortable to hold, and it is also friendly to those who sweat a lot.

When writing in profile, the damping will be a little larger, and the handwriting will be a little thinner, but it will still be smooth. This pen is more suitable for writing stroke by stroke, or writing on relatively smooth paper. The quick-drying properties are acceptable, and the water resistance is in the upper middle range for this review.

5. Point the stone bead king

If the pen grip point is relatively backward, the pen grip is thicker and smoother, you may feel a little unable to hold it, but the pen grip point is slightly lower, the diameter will be much smaller, and there will be some lines.

A laptop refers to a laptop computer. Notebook (English: notebook, abbreviated as notebook), Chinese called notebook, laptop and laptop (English:

laptop-computer, abbreviated as laptop).

A notebook computer, also known as a portable computer, is a small and portable personal computer. The current trend is that the size is getting smaller and smaller, the weight is getting lighter and lighter, and the function is becoming more powerful and percolated.

Although the body of the laptop is very lightweight, it is fully capable of daily operation and basic business, entertainment, and computing operations. Today's laptops are differentiating different trends according to their uses, netbooks tend to be daily office and movies, business laptops tend to be stable and low power consumption to obtain longer battery life, home laptops have good performance and high cost performance, and gaming laptops are specially designed to cater to a small number of people going out to play games, audiophile configuration, and good entertainment experience.

The better pen brands are: Deli, Chenguang, Baixue, Hobby, True Color.

1. Effective

Well-known brands of stationery, well-known brands of hardware tools, well-known trademarks in China, China Stationery Baihuan Award, and leading brands in the office stationery industry. Founded in 1988, after 20 years of exploration and hard work, it has grown into a large comprehensive stationery businessman in China.

2. Morning light

As one of the world's largest stationery manufacturers, M&G Stationery is a comprehensive stationery merchant that integrates creative value and service advantages, and is committed to making learning and work happier and more efficient. The products cover writing instruments, student stationery, office stationery and other related products.

3. Snow

Qingdao Changlong Stationery, founded in 1988, is a famous trademark in Shandong Province, a famous brand product in Shandong Province, a larger correction liquid sales roller and pen making company, and a Sino-foreign cooperative enterprise integrating R&D, production and sales of stationery.

4. Hobbies

Wenzhou hobby pen industry, water-based pen well-known brand, well-known stationery brand, Zhejiang famous trademark, Zhejiang export brand, Peidouwu China Pen Association vice chairman unit, set production, sales, scientific research as a whole, the domestic large-scale stationery production enterprises with the right to import and export.

5. True color

Zhencai Stationery Co., Ltd., a well-known brand of stationery, is one of the large-scale and most comprehensive large-scale professional stationery enterprise groups in China.

The above content reference: Encyclopedia-Deli Group****.

The above content reference: Encyclopedia - Shanghai Chenguang Stationery Co., Ltd. ****.

1.Schneider: A German brand known for its high-quality tungsten nibs and smooth writing experience.

2.PILOT: A brand originating from Japan that offers a wide range of high-quality mammoth oak pens and ballpoint pens, known for their smooth writing and durability.

3.Faber-Castell: A brand from Germany known for its quality writing tools and unique design.

4.Montblanc: a luxury brand whose fountain pens are known for their craftsmanship and outstanding trouser quality.

5.Parker: A British brand known for its quality fountain pens and ballpoint pens, with a long history and classic designs.

In addition, there are other popular brands such as Montblanc, Cartier, and Lamy, among others. The choice of the best pen brand is still based on your personal tastes, budget and writing habits. It is advisable to try different brands of pens before buying and choose the one that suits you best.

The electrician voltage tester can choose a large domestic brand, and I think it is better to display digitally.

The voltage tester is one of the tools often used by the majority of electricians to determine whether the object is charged or not. Its internal structure is a bulb with two electrodes, the bubble is filled with neon gas, commonly known as neon bubble, one pole of it is connected to the tip of the pen, and the other pole is connected to the other end of the pen after a high resistance in series. When the voltage between the two poles of the neon bubble reaches a certain value, a glow will be produced between the two poles, and the intensity of the glow is proportional to the voltage between the two poles.

When the charged body voltage to the ground is greater than the glow voltage at the beginning of the neon bubble, and when the tip of the pen of the voltage tester touches it, the other end is grounded through the human body, so the voltage tester will emit light. The function of the resistance in the voltage tester is to limit the current flowing through the body to avoid danger. In addition to judging whether an object is electrified, the voltage tester also has the following uses:

1) It can be used to perform low-voltage nuclear phase to measure whether any wire in the line is in phase or out of phase. The specific method is: standing on an object insulated from the earth, holding a voltage tester in each hand, and then testing on the two wires to be measured, if the two voltage testers are very bright, the two wires are out of phase; On the contrary, it is in-phase, which is judged by the principle that the voltage difference between the two poles of the neon bubble in the voltage tester is proportional to its luminous intensity.

2) It can be used to distinguish between alternating current and direct current. When testing with a voltage tester, if both poles in the neon bubble of the voltage tester emit light, it is alternating current; If only one of the two poles emits light, it is direct current.

3) The positive and negative poles of direct current can be judged. The voltage tester is connected to the DC circuit for testing, and the pole where the neon bubble shines is the negative pole, and the pole that does not shine is the positive pole.

4) It can be used to judge whether DC is grounded. In the DC system with ground insulation, you can stand on the ground and use the voltage tester to contact the positive or negative electrode in the DC system, if the neon bubble of the voltage tester is not bright, there is no grounding phenomenon. If the neon bubble is shiny, it means that there is a grounding phenomenon, and if it shines like the tip of the pen, it means that the positive electrode is grounded.

If it shines on the finger end, the negative electrode is grounded. However, it must be pointed out that in a DC system with a grounding monitoring relay, this method cannot be used to determine whether the DC system is grounded.