VoltageLab

 We all use batteries, right? But how many of us know how the battery actually works? We don't have to know about the complicated terms of chemistry formula but basic things like mah are worth learning about. mah is a basic topic of battery. It explains the capacity, the time, we can use a battery from mah. I will try to explain easily about mah. So let's get started. The capacity of batteries is indicated as mah. Mah capacity rating explains the storage capacity available for a particular battery. An ampere-hour is a unit of electric charge. Normal batteries, such as those in mobile phones and digital cameras, are often rated in milliampere-hours. The milliampere-hour is one-thousandth of an ampere-hour and is a technical term for how much electrical charge a particular battery will hold. As an example, using higher mah batteries in a device with constant electrical consumption will theoretically give longer operating times. A battery with a capacity rating of 1000 mah could d...

 The transistor is a semiconductor device for amplifying, controlling, and generating electrical signals. Transistors are the active components of integrated circuits that containing billions of minuscule devices etched into the surface. It is used as an amplifier or switches electronic signals and electrical power. Transistors are one of the basic building blocks of modern electronics. the word transistor is made of the two words, transfer and resistance. This is because it has the function of transferring the resistance from one end of the device to the other end or we can say, transfer of resistance. Transistors have very high input resistance and very low output resistance.  It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. It works when the holes start moving across the two junctions between the n-type and p-type silicon. When turning a small input current into a large output current, the transistor acts ...

 The direction of current flow and electrons has been a very common question. It is the most common but most asked question as well. Many have confusions about the answer, we all know that current is the flow of electrons. So why it always have to be the opposite? Why their direction would be different? Today I will try to get you rid out of this confusion.  First of all, we need to know what is current? An electric current is a stream of charged particles, such as electrons and ions, moving through an electrical circuit or space. It is the flow of a positive electric charge. The strength of current flow in any medium depends on the difference of voltage in that medium. It is measured as the total rate of flow of electric charge through a surface or into a control volume.  And electron flow is what actually happens and electrons flow out of the negative terminal, through the circuit, and into the positive terminal of the source. It won't make any difference as long as the...