Salt and charcoal are used in earthing to enhance the conductivity of the soil. When a grounding system is installed, such as for electrical or telecommunication purposes, it’s crucial to ensure low resistance between the grounding electrode and the surrounding soil. Salt, being hygroscopic, helps to retain moisture in the soil, which improves its conductivity. … Read more
IGBTs (Insulated Gate Bipolar Transistors) are used in inverter modules of Variable Frequency Drives (VFDs) due to their capability to handle high voltages and currents efficiently. In VFDs, IGBTs serve as the switching devices in the inverter stage, where they convert DC voltage from the rectifier into AC voltage with variable frequency and amplitude. This … Read more
In electrical circuits, particularly with circuit breakers, swapping the line and load connections can have significant consequences. Circuit breakers are designed with specific connections for the line (incoming power) and load (outgoing circuit). The line side is where the power supply is connected, typically from the electrical panel or source. The load side is where … Read more
LED lamps, despite their many advantages, have several drawbacks. One significant drawback is their initial cost, which can be higher compared to traditional incandescent or fluorescent lamps. Although LED prices have decreased over the years, the upfront investment may deter some consumers from switching to LEDs initially. Additionally, the quality of light produced by LEDs … Read more
Light Emitting Diodes (LEDs) possess several key properties that make them highly advantageous in various applications. Firstly, LEDs are highly energy-efficient, converting a higher percentage of electrical energy into visible light compared to traditional incandescent or fluorescent lamps. This efficiency translates into significant energy savings and reduced electricity costs over the lifespan of the LED. … Read more
Yes, you can switch off an inverter and turn it on only during power cuts, but this practice depends on the type of inverter and its setup. Inverters designed for backup power typically remain on standby mode when not actively powering devices. By keeping the inverter switched off during normal operation, you conserve energy that … Read more
LED bulbs designed to operate on 220V AC typically incorporate internal circuitry that converts the AC voltage to a lower DC voltage suitable for powering the LEDs. This conversion is achieved using a combination of components such as rectifiers, capacitors, and sometimes integrated circuits (ICs) to rectify and regulate the voltage. LEDs themselves require DC … Read more
How to calculate the breaking capacity of a circuit breaker ? Calculating the breaking capacity of a circuit breaker involves understanding the maximum fault current the breaker can safely interrupt without damage. The breaking capacity is typically determined by the manufacturer and is specified on the breaker’s rating plate. However, for calculations or verification, the … Read more
An oscillator works by continuously generating a periodic waveform or signal without needing an external input once it has started. It achieves this through positive feedback where a portion of the output signal is fed back to the input with the proper phase and amplitude to sustain oscillations. The feedback loop reinforces the signal, causing … Read more
The main difference between CFL (Compact Fluorescent Lamp) and tube lights lies in their form factor and application. CFLs are compact versions of traditional fluorescent tube lights, designed to fit into standard light sockets. They operate similarly to tube lights by using a fluorescent coating inside the bulb that emits visible light when excited by … Read more