Tech Tips

Method of Generating Direct Current (DC) Power

In general, electronic devices operate at direct current. This is common to home appliances such as smartphones, Computers, TVs, refrigerators, and air conditioners, as well as [...]

Electric grid (power system interconnection) to Learn from Scratch

Do you know that there was a "switch" until about the 1980s in the case that you buy home appliances, especially when you connect lighting equipment to an outlet in Japan? Thi[...]

How to Use Bidirectional Power Supply

First, we explain what a bidirectional power supply means. A converter that can convert DC and AC bidirectionally to any power system is called a bidirectional power supply. It [...]

Electric Vehicle Motors: Battery and Supply Voltage

With the support of the government, many European countries, the United States, and China are advancing the transition from conventional automobiles to electric vehicles. In Jap[...]

Electric Double-Layer Capacitors are Optimal for Leveling Power

Unlike a normal capacitor, a double-layer capacitor has a large electric capacity because the electric double-layer, that is a layer with the opposite polarity to the electrode [...]

Battery Types and Characteristics of Charge Control

Rechargeable batteries have various features depending on their type. At first, we introduce battery type. LiB Lithium-ion battery is used in a variety of applications, from s[...]

What happens inside the rechargeable battery during charging and discharging?

Discharge takes electricity from the battery. Electrochemical reactions occur in primary or rechargeable batteries, and electrons to be emitted by these reactions. We will expla[...]

Battery Types and Characteristics (Basic Knowledge)

There are various types of electrical appliances around us. Except for large-sized electric appliances such as TVs and refrigerators that take power from outlets, they operate w[...]

Basics of amplifiers, how to use the amplifier and precautions

If you search for "amplifier" on the Internet, you will get results from many websites about audio power amplifiers. But the "amplifier" itself is not just for audio. The device[...]

What is X-Ray Fluorescence? (Basic Knowledge)

When an object is irradiated with X-rays of a certain energy or greater, the inner shell electrons of the atoms in the material are excited. When the outer shell electrons mov[...]