How Much Savings on Inverter Aircon?

Is it a lot of money to save when using an inverter aircon? Is it practical to invest in this high priced aircon? How much savings on inverter aircon in reality? These are just few questions the consumer may interested to know the answer from the experts. Well, I am not an expert, but I will share to you what

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Power MOSFET Design Equations

here are only few power MOSFET design equations to take note when doing design involving this electronic part. You may try deriving these equations if you want a better understanding on how these formulated. These are also given in application notes and some technical blogs but maybe in different form but will result to the same calculation results.

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Inverter Aircon Savings

Inverter Aircon Can and Cannot Save Money

Advertisers said that end user can save up to 50% of their electric bill compared to the conventional or non-inverter aircon. Is this true? Well, let us talk about it, so keep reading. I actually say that inverter aircon can and cannot save money. Inverter aircon is a new technology; actually, not anymore very new as of this writing but there is no other technology so far newer than this in air conditioning world.

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Transistor Basic Circuit

How to Know if a Transistor Defective

Transistor is an active electronic part. An active electronic part is something can perform amplifications or signal processing. Transistors are basic elements on power amplifiers, audio amplifiers, switching converters, power supplies and so on. A transistor term is somewhat generic. It could be a BJT, MOSFET of JFET. But for common people (electronic hobbyist), it is commonly referring to a

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How to Know if a Relay Defective

Relay is an electromechanical part though nowadays there is already a so-called solid-state relay. An electromechanical means a combination of electrical and mechanical actions or functions. For hobbyist, it is important how to know if a relay defective. But before going to that, let us discuss the basics of a relay for better understanding. As mentioned above, a relay is

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Purpose of Power Factor Correction

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

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How Electric Meter Works

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

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Wireless Charger Design Principle Concept Explained

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

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