Electrical Tips, News & DIY Guides
Understanding the brake test of dc motor: Imagine trying to find out how well a DC motor is working—how much of the electrical power it uses turns into useful mechanical work. One easy and direct way to check this in a lab is by do something called a Brake Test. Let’s break it down in … Read more
Two-Point Starter A two-point starter is used for starting DC series motors. It is a simple device that helps control the starting current to prevent damage to the motor. A Two-Point Starter is a simple device used FOR safely starting a DC series motor. When a motor starts, it can draw a large amount of … Read more
Three-Point Starter A three-point starter is commonly used to safely start DC shunt motors. Just like the two-point starter, it controls the high inrush of current when the motor is switched on. But this one comes with an added feature—overload and no-voltage protection, making it more reliable. What is a Three-Point Starter? The name “three-point” … Read more
DC Motor Starter: DC motors, especially those below 1 HP (0.746 kW), can often be directly connected to a power supply. This is possible because smaller motors have a relatively high armature resistance (Ra), which naturally limits the starting current. Some examples include: However, this direct online starting method cannot be used with larger motors … Read more
What Is Speed Regulation? Think about riding a bicycle. When you’re going downhill with no backpack, it’s super fast and smooth. But going uphill with a heavy bag? How to calculate the speed regulation of DC motors? DC motors act the same way. When there’s no load, they run fast. When there’s a heavy load, … Read more
Introduction Electrical outlets form an essential part of residential and commercial electrical infrastructure. They provide the interface between electrical devices and a building’s power distribution system. For students pursuing electrical engineering or a related field, understanding the principles and practices of electrical outlet wiring is crucial not only for practical installations but also for developing … Read more
Brushless DC (BLDC) Motor Brushed DC motors are older types of motors that utilize small components called brushes and a commutator to facilitate the flow of electricity. But these parts rub against each other and cause sparks, which makes them wear out quickly. They also have wires on both the inside and outside parts of … Read more