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What is the difference between a capacitor and supercapacitor based on parameter

2019-04-23

Compared to the ordinary capacitor, supercapacitor has a coulple of pros such as charging quickly, long service life for cycle use and green environmental protection on account of its no pollution in the raw material composition and the process of product

How do you find where a circuit board was manufactured?

2019-04-23

In general, PCB manufacturers tend to etch their own UL Number on the circuit board. That’s to say, it’s virtually possible for us to check and find corrsponding PCB factory information. Then we are gonna know where a circuit board was manufactured in the

What's the most helpful thing on a PCB ruler?

2019-04-22

When it comes to the fuction of the PCB ruler, the most helpful thing should be: 1.Measuring the length of objects the same as other ordinary rulers; 2. With plenty of components package and various holes information, which can be used for reference

What is the difference between a rigid PCB and a flex PCB?

2019-04-22

When it comes to the difference between a rigid PCB and a flex PCB, the first thing we should consider that is the thickness, rigidity, substrate, production technology, usage (Such as FPC can be bended and folded.)

Can a photoresistor work like a solar cell?

2019-04-20

Not really. To be honest, as the increasing of light intensity, the resistance value of photoresistor reduces instead which can’t be converted into electric energy;

Can static electricity be enough to harm you?

2019-04-20

Yes! Static electricity is definitely harmful for us but not causing death. After all, the voltage of static electricity can up to tens of thousands of volts even hundreds of thousands of volts which is able to discharge on the spot and generate electrost

How does directional relay measure the direction of current flow in AC current?

2019-04-19

Directional relay consists of phase sequence detector, phase sequence automatic corrector, corrected signal amplifier and execution unit which indicates it is still able to measure the direction of current flow even in AC circuit.

What are the advantages of having a solid ground region on a PCB?

2019-04-19

A solid ground has a dual function, including increasing current and shielding interference.

How does self-powered sensor work? Where does it get energy to keep functioning?

2019-04-19

Actually, there are two various self-powered sensors: One is active sensor, the other is passive sensor.

Why is it difficult to transmit audio signals directly?

2019-04-18

So long as the audio signals convert into the voltage/ current signals or electromagnetic signals which can be transimitted.

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