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Water has a large dielectric constant. Why is it rarely used in capacitors?

2019-04-03

Although water has a large dielectric constant, it is still not suitable to be used in capacitors. So why? Once water integrated into other ions whose dielectric constant becomes small definitely, at this time, which is like a conductor. Furthermore, if t

What is Rogers PCB?

2019-04-03

Rogers PCB: A special base material, a kind of RF PCB and High Frequency PCB, which is imported from Rogers, USA.

What is the definition of an arc welding machine?

2019-04-03

ARC Welding Machine: ARC welding transformer, which is a special transformer whose fuction is converting AC current of network voltage into low voltage AC current that is matched to ARC welding.

How do radars detect an object's speed?

2019-04-02

Radar Working Principle: Emitting the electromagnetic energy to the space with a directional way and receiving the radio wave which is refleced from the object of space.

What is the average latency of a WiFi network?

2019-04-02

Frankly speaking, the average latency of a WiFi network is far more than the wired network. Generally, wired network is less than 1 ms, while WiFi network is 1–3ms, which is 10–100 times of the former;

Can I consider a contactor as a big sized relay?

2019-04-02

It depends. Let’s discuss it from two different situations:

In the electronics world, do we consider a microphone as a sensor?

2019-04-01

In fact, ther are sensors in all microphones, one of them is the moving coil transducer whose structure principle that is splicing a light metal coil in the elastic diaphragm; Due to the coil is in a field of permanent magnet, as the elastic diaphragm vib

Is it recommended to wear gloves while soldering?

2019-04-01

Absolutely! Protective gloves reduce the absorption of chemicals through the skin, which is quite recommended for welders to wear while soldering.

What is earth resistance tester?

2019-04-01

Earth resistance tester: A common tester that is used to check and measure the earth resistance; An indispensable tool for electrical safety checking and grounding engineering checking and accepting.

What's the effect on the properties of soldering lead if it's repeatedly heated?

2019-03-30

Bad effect: If the lead is repeatedly heated, the alloy power of the solder paste and welding flux will occur chemical reaction which definitely lower its viscotity ans activity. That’s to say, the welding quality of lead solder paste is gonna become awfu

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