Electrical4U 
A good electrical engineering book will kickstart a beginner’s journey into the world of electrical and electronics engineering. The best electrical engineering books cover a range of topics, are easy to understand, and include both theory and practical applications. It’s easy to lose interest in textbooks that are dull and hard to understand. Many skip … Read more
What is Transmittance? The transmittance of a surface or material is defined as the part of the light that moves through the other side of the surface. When light passes through any surface or material, it can be transmitted, reflected, or absorbed. Transmittance and reflectance are closely related concepts. Transmittance is defined as the ratio … Read more
What is a PNP Transistor A PNP transistor is a bipolar junction transistor constructed by sandwiching an N-type semiconductor between two P-type semiconductors. A PNP transistor has three terminals – a Collector (C), Emitter (E) and Base (B). The PNP transistor behaves like two PN junctions diodes connected back to back. These back to back … Read more
What is a NPN Transistor An NPN transistor is the most commonly used bipolar junction transistor, and is constructed by sandwiching a P-type semiconductor between two N-type semiconductors. An NPN transistor has three terminals– a collector, emitter and base. The NPN transistor behaves like two PN junctions diodes connected back to back. These back to … Read more
What is a Band Pass Filter? A band pass filter (also known as a BPF or pass band filter) is defined as a device that allows frequencies within a specific frequency range and rejects (attenuates) frequencies outside that range. The low pass filter is used to isolate the signals which have frequencies higher than the … Read more
What Are Harmonics? Harmonics are defined as an unwanted higher frequency component that is an integer multiple of the fundamental frequency. Harmonics create a distortion in the fundamental waveform. Harmonics typically have a lower amplitude than the fundamental frequency. What is Amplitude? The maximum value (positive or negative) of an alternating quantity is known as … Read more
A filter removes unwanted elements, much like a water filter cleans impurities from water. Similarly, an electric filter works to cleanse signals in electronic circuits. An electric filter, made up of resistors, inductors, capacitors, and amplifiers, passes signals of a certain frequency while attenuating others that are too high or too low. The frequency at … Read more
A great portable generator is one that you can use at home and rely on to get you through emergencies. It needs to be quiet, reliable, have a high power output, and a nice long battery life. On the flip side, a poorly-made generator can let you down just when you need it most. So … Read more
A good Arduino starter kit can help jump-start a beginner’s journey into learning electronics. The best Arduino starter kits come packed with user-friendly tutorials as well as a bunch of added components and accessories – like LEDs, sensors, buttons, and buzzers. On the other hand, it’s easy to get bored quickly when your Arduino starter … Read more
What is a Klystron Tube? A Klystron (also known as a Klystron Tube or Klystron Amplifier) is a vacuum tube that is used to oscillate and amplify microwave frequency signals. It was invented by American electrical engineers Russell and Sigurd Varian. A klystron uses the kinetic energy of an electron beam. Generally, Low-power klystrons are … Read more