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How do you find faulty soldering?

2019-05-27

When it comes to the faulty soldering, cold solder joint leads to open circuit, tin connected cuases short circuit, incorrect welding direction / place of components are the major considerations, which can be virtually discovered by virtual inspection and

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What came first, potential difference (voltage) or current?

2019-05-27

In our daily life, you may often hear the saying like this “where there is voltage there must be current following.” However, the truth is that is not absolutebecause current changes in different circuit.

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What happens to the current when the voltage stays the same and loads are added?

2019-05-25

Well, the current should be discussed based on different circuit (Series circuit & parallel circuit), which is definitely in line with Ohm’s law.

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Why are GND pads often only connected by four traces?

2019-05-25

Honestly, the best connecting way for all components pads that is fully connected with copper surface, but in order to make the following assembly goes well( To avoid high-power heater and cold solder point ) and satisfy electrical performance and process

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What type of electrical cleaner should I use on sensors?

2019-05-24

To be honest, no matter which electrical cleaner you choose, which should at least satisfy these four requirements: 1.Be safety and environmental protection(No CFC & HCFC); 2.No corrosion to plastics and rubber and quick-drying; 3.Be able to

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A PCB Design Problem-THT Holes Are Less Than 0.50mm

2019-05-24

In the PCB design, the engineering design defaults to ≤0.50mm, which is a via hole, resulting in a small aperture of the finished board. Both the client and the PCB factory are very troubled.

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Why is it difficult to step up DC voltage?

2019-05-23

To be honest, step up DC voltage is a little bit complicated instead of difficult. Then why? Because if we want to boosted DC voltage with a transformer, which has to be converted.

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How can we do rigid flex PCB pre-production work?

2019-05-23

As we all know, rigid flex PCB is often used for some special products, which demands both flex area and rigid area on account of saving the inner space, reducing the volume of finished product and improving its performance.

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What is a PCB terminal block? What is its purpose?

2019-05-22

Well, PCB terminal block means that the point of juction between PCB and external wire; And when it comes to the types of PCB terminal block, actually, there are a variety of types such as plug, socket, special FFC(Flexible Flat Cable), welding way and so

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Why aren't there solar-powered cars?

2019-05-22

Frankly, solar-powered car is still in the stage of experimental improvement. As we all know, solar vehicle is called "A Future Car" because of its zero pollution and inexhaustible energy (solar energy), which also represents the new level of au

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