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In addition to ensuring that the generator frequency matches the frequency of the grid or appliances, the following conditions must also be satisfied:

(a) Output voltage of the generator must match the

For most applications that utilise diesel generator sets, it does not have to comply with any emission requirements when:

Unlimited operation for emergency power supply on standby mode
Non-emergency

Geophone is a device used in surface seismic acquisition, both onshore and on the seabed offshore, that detects ground velocity produced by seismic waves and transforms the movement into electrical impulses.

Seismic waves, the same type of waves used to study earthquakes, are also used to explore deep underground for reservoirs of oil and natural gas.
 
Seismic waves – the same tool used to study earthquakes – are

I. Q: What is Seismic Survey?
A: The seismic survey is one form of a geophysical survey that aims at measuring the earth’s (geo-) properties by means of physical (-physics) principles such as magnetic, e

P wave is body waves that propagate through the planet. P-waves travel 60% faster than S-waves on average because the interior of the Earth does not react the same way to both of them.

P-waves are

What is Seismic Reflection?
 

Seismic refraction is a geophysical principle governed by Snell’s Law. Used in the fields of engineering geology, geotechnical engineering and exploration geophysics. Seismic

Toggle switches, also known as toggle switches, lever switches, are the most commonly used manual switches and are widely used in electronic instruments, meters and electrical equipment. Toggle switch is a kind of

The types of toggle switches mainly include bipolar type, vertical installation type, horizontal installation type, standard type, and ball type. It is a manually controlled micro switch, which is similar to a DIP

What is A Hydrophone?
 

Hydrophones are underwater microphones designed to monitor underwater noise. A typical hydrophone works by detecting pressure changes in the surrounding environment and converting

In the manual operation of the toggle switch, the switch action can be divided into two stages. The first step is to manually pull the handle from the middle to vertical. At this time, the tip of the single-pole

The toggle switch is also called the toggle switch. Its name comes from the fact that it is always twisted when used. There are many types of toggle switches, the common ones are ON-OFF, ON-ON, ON-OFF-ON, OFF-ON,

As we all know, the wheel speed sensor is used to test the wheel speed of a car. However, don’t underestimate its existence. If the speed sensor is broken, it will have a great impact on the car i

The wheel speed sensor is a sensor used to measure the speed of a car wheel.

For modern cars, wheel speed information is indispensable. Automotive dynamic control systems (VDC), automotive electronic s

Nowadays, in the fast-developing society, convenient transportation is becoming more and more important. On this basis, automobiles have become especially common and important, becoming a new type of

When we think of “dirty” water, we first think of water-borne diseases. But it has always been pollutants, such as arsenic, lead and other toxic particles, which may be fatal in

1. Basic concept of RO filter

(1) Water inlet: Water inlet is marked on the far right side of the figure above, which is usually water that has been preliminarily filtered

RO filter is a separation method that separates the solute in the solvent from the solvent without resorting to the selective retention of a semipermeable membrane under

The central prefilter, also known as the waterway protector, is an integral part of the home’s infrastructure and is generally installed during renovation. The front is a wa

I believe that many people have seen prefilter videos on the Internet, and many families have installed prefilters. In fact, pre-filters can only filter initially. For families w