211 SRI RAMAKRISHNA MISSION VIDYALYA POLYTECHNIC COLLEGE.

  Online UPS : The Online UPS is a type of UPS that supplies power to the AC load through the  Rectifier and Inverter Combo  in normal operation and uses an inverter to supply AC power during a power failure.  Therefore, the output power supply always stays ON and there is  no need for switching . Hence, there is no time delay in switching between its sources.  There is no interruption in the case of power failure even for a nanosecond.

  Electric current The movement of electric charges through a medium, such as a wire.  Electric current is measured in amperes, or amps.   Voltage The force that causes electrons to flow, or the difference in potential energy between two points in a circuit.   Resistance A measure of how well an object conducts electricity.  Objects with low resistance are good conductors, while objects with high resistance are poor conductors.   Conductors Materials that allow electricity to flow through them easily.  Most metals are good conductors.   Insulators Materials that don't carry electricity well.  Rubber and plastics are examples of good insulators.   Ohm's Law A formula that describes the relationship between resistance, electro-motive force, and the intensity of current.   Power formula A formula that describes the relationship between power, the intensity of current, and electro-motive force.   Like charges repel, unlike charges ...

  The  pin configuration of the IC 741 operational amplifier  is shown below. The  op amp 741 pin diagram  and the functionality of each pin are explained clearly in the below section. Power Supply Pins: Pin 4 and 7 Pin 4 and pin 7 are the negative and positive voltage power supply terminals. The power which is required for the IC to function is received from both these pins. The voltage level between these pins can be in the range of 5 – 18V. Output Pin: Pin 6 The output which is delivered from the IC 741 op amp is received from this pin. The output voltage that is received at this pin is based on the feedback approach that is used and the voltage level at the input pins. When the voltage value at pin 6 is high, this corresponds that output voltage is similar to the +ve supply voltage. In the same way, when the voltage value at pin 6 is low, this corresponds that output voltage is similar to the -ve supply voltage. Input Pins: Pin 2 and Pin 3 These are the inpu...

 A B usbar is a metallic conductor that serves as a central hub for multiple electrical connections. It can be solid, hollow, or flexible, and comes in various shapes. In this blog, we will understand the Types of Busbars and their roles in respective applications. Essentially, it’s an electrical junction where all incoming and outgoing electrical currents converge. This means that a busbar collects electrical power in one place. The number of incoming and outgoing connections can be adjusted based on power requirements, always considering the busbar’s current carrying capacity.  Busbars  are integral components of substations, used in Low Voltage (up to 400V), Medium Voltage (around 11kV), and High Voltage (up to 765kV and beyond) systems. Role of Busbar in Electrical Power Distribution Busbars, simplify complex power distributions, making them more affordable by replacing multiple conductors and reducing costs. By providing a single node point, it is easier to add prote...