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Do you think through-hole electrical components will stop being made?

2019-03-22

Even though the electronic products tend to be miniaturized and multi-functional; However, DIP electronic components won’t stop being made.

What is a ceramic PCB?

2019-03-22

Ceramic PCB: Simply speaking, it is a circuit board with ceramic base material; Furthermore, in the condition of high temperature, the copper is gonna linkage to the surface of Al2O3 or AlN ceramic base board(Single-sided or Double-sided).

Is it practical to create a PCB antenna for NFC?

2019-03-21

Yes! It’s definitely practical. NFC: Near Field Communication, by now, which is a vital part of mobile payment system. In other words, NFC antenna has became one of indispensable component in the fabrication of mobile PCBA.

Why does a current always choose to go to the resistance which is lower?

2019-03-21

As a matter of fact, the current tends to flow from high voltage to low voltage; The only difference is that the current turns higher when the resistance is lower. I guess, this is the phenomenon you observe in the circuit.

How do I find the SMD/SMT equivalent for through-hole components?

2019-03-21

No worry, it’s not a big deal! Actually, if you find the same specification(equivalent), you can totally try to replace DIP resistor/ transistor/ capacitor with SMT/SMD ones.

How high frequencies are used or can be used in ferrite core transformers?

2019-03-20

Generally speaking, 50–200HZ is used in ferrite core transformer;

Can a cold solder connection cause fire on the PCB?

2019-03-20

Not really. Cold solder: Little solder around the solder point that is only easy to cause bad contact instead. Possible reason: Poor solder paste or processing technology;

Why is copper used in PCB instead of aluminum?

2019-03-20

It depends. According to the metal base material, both copper and aluminum are used in PCB but with various application; However, if we discuss this question from PCB Plating perspective, then we’ll get another totally different answer:

Where are most semiconductors manufactured?

2019-03-19

At present, USA is the most semiconductors manufacturer around the world; While in China, Taiwan should be the No.1 in terms of manufacturing semiconductors.

What is the direction of the current flow when a switch is closed?

2019-03-19

If I understand what you mean correctly: “What is the direction of the current in the outside of the power supply when a switch is closed?” Normally, in the outside of the power supply, the current flows from the positive electrode to the negative el

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