Tech Docs
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CoreThe core is the central strand of a fiber optic cable, composed of ultra-pure glass or plastic. It serves as the transmission medium for light signals. The diameter of the core depends on the fiber type—typically 9 microns for single-mode fibers and 50 or 62.5 microns for multimode. Its refractive index is slightly higher than…
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Substations are essential components of the electrical power system. They serve as the connection points between the high-voltage transmission lines and the lower-voltage distribution networks that deliver electricity to homes and businesses. At a substation, electricity is transformed from high voltage to a lower voltage, making it safe for use. This process is crucial because…
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An electrical busbar is a metallic strip, bar, rod, or tube, typically made of highly conductive materials like copper or aluminum, that functions as a central junction point for distributing electrical power. Serving as a high-capacity conductor, it collects electrical current from incoming circuits (like transformers or generators) and efficiently distributes it to multiple outgoing…
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Electrical switches are categorized in various ways, often based on their construction, actuation method, and function within a circuit. A common classification uses the Pole and Throw configuration: the Single Pole, Single Throw (SPST) is the simplest ON/OFF switch, controlling one circuit from one location, like a standard light switch. The Single Pole, Double Throw…
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System design in electrical engineering involves planning and structuring power systems to ensure efficient, reliable, and safe distribution of electrical power. Switching devices, such as switches and circuit breakers, are integral components that control the flow of electricity within these systems. Circuit breakers are specialized safety devices designed to automatically disconnect electrical circuits during overloads…
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Power distribution is the final stage of the power grid responsible for receiving bulk electric energy from the transmission system and delivering it safely, reliably, affordably, and at appropriate voltage and power quality to virtually every end-use customer—residential, commercial, and light industrial—across cities, suburbs, and rural areas. It begins at the distribution substation, where incoming…
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A battery is an electrochemical device that converts stored chemical energy directly into electrical energy (Direct Current or DC). It is composed of one or more electrochemical cells, each containing two electrodes—a positive cathode and a negative anode—which are separated by a conductive medium called an electrolyte. When an external circuit is connected, a chemical…
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OS1 and OS2 are classifications of singlemode fiber optic cable defined by their construction and performance characteristics. OS stands for “Optical Singlemode.” OS1 is typically used for indoor applications and features tight-buffered construction, supporting up to 10 km at 1310 nm and 40 km at 1550 nm. OS2 is optimized for outdoor and long-haul deployments,…
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Basic electrical properties describe how different materials respond to electric current and electric fields. The most fundamental of these is electrical conductivity, which measures how easily a material allows electric current to flow through it. Materials with high conductivity (like copper or silver) are called conductors; those with very low conductivity (like glass or rubber)…
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UPC and APC refer to two types of fiber optic connector polish styles: Ultra Physical Contact (UPC) and Angled Physical Contact (APC). UPC connectors have a flat, slightly domed end-face that provides low insertion loss and are commonly used in digital systems like Ethernet and CATV. APC connectors feature an 8-degree angled end-face that minimizes…
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OM1 to OM5 refer to standardized categories of multimode optical fiber, each defined by core size, bandwidth capacity, and transmission distance. OM1 uses a 62.5 µm core and supports up to 1 Gbps over short distances, while OM2 through OM5 use a 50 µm core and are optimized for higher-speed VCSEL-based transmissions. OM3 and OM4…
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Duplex patch cords are fiber optic cables that contain two strands—one for transmitting and one for receiving optical signals, allowing bidirectional communication between devices. These cords are typically used in full-duplex systems such as Ethernet or Fibre Channel, where simultaneous send and receive operations are required. Duplex patch cords often feature connectors like LC, SC,…
