The purpose of power factor correction is to condition the line current. To condition simply means making the line current smooth by filtering the spikes and any irregularities in the waveform. A smoother line current will have low power loss. Some images below are showing a line current with a very bad power factor. The yellow and pink waveforms are
READ
How electric meter works? Electric meter records the consumer energy consumption. Energy is the product of power and time. You may be already heard about the term “kilowatt-hour”. This is the unit of energy measured by the electric meters. The power considered is the real or true power that is consumed by the users. There are two common types of
READ
Cell phones, tabs and other gadgets nowadays are having so many applications which correspond to higher energy consumption that the battery charge cannot last long. Thanks to power banks; we can use our phones and gadgets in the whole day without the need of an AC power. Let us uncover how power bank works. Types of power bank Non-portable Non-portable
READ
The future of charging is through wireless charging. Wireless charging is different from the conventional way of charging phones, tabs and gadgets. It is not using any cable or wires between the charger and the device to be charged. It seems complicated but here we are going to hack how it works and how wireless charger design principle differ with
READ
For small power applications like on board power sources, linear power supply is often used due to its simplicity and low cost. However, when the need for high power density designs arises, linear power supply simply disappears in the picture. It is because linear power supply is very less efficient. Switch mode power supply comes in place. Switch mode power
READ
The days of incandescent lamps are over. LED lighting takes over nowadays as they are much more energy efficient. LED lights on the other hand require a good controlling circuit to operate correctly and this is the so called LED driver circuit. LEDs are basically a form of diode that gives off light when forward biased. A diode is rated
READ
EMI is the hardest thing to deal in switching power supply design. There are several factors that worsen EMI and there are also some ways to minimize EMI and able to pass the standards. One of the several ways to combat EMI is through shielding and we will discuss here EMI shielding techniques. Before going far, let us define EMI.
READ
What is a Snubber? Snubber is a form of circuit protection against voltage spikes, ringing and oscillation effects. Snubber works by either clamping voltage spikes but not altering the ringing frequency or does the same function. Snubber Circuit Design is one of the complex tasks in circuit design. It needs a deep knowledge on circuit’s foundations to design a good
READ
Surge protection circuit is the one referred by many as protector for voltage spikes in AC grid lines; however it is not limited particularly in AC grid lines. Surge protector or surge protection device is a device that will provide surge suppression or voltage spike suppression so that sensitive devices will not get damage. Surge protector can handle voltage spikes
READ
Basic NPN Transistor Principles Universities are covering this topic very well but despite I still attempt to discuss NPN transistor principles that I think easier to understand for non technical people. NPN transistor is the name given to a bipolar junction transistor with two N type materials or negative carriers while there is only one P type material or positive
READ