Phase Locked Loop Operating Principle(हिन्दी ) - YouTube Sep 21, 2017what is Phase locked loop? What is the need of it, and how it works? PLL tutorial PLL basics #16 - Duration: 14:40. Rahsoft Radio Frequency Certificate 37,550 views Control Systems - Block Diagram Reduction - Tutorialspoint Follow these rules for simplifying (reducing) the block diagram, which is having many blocks, summing points and take-off points. Consider the block diagram shown in the following figure. Let us simplify (reduce) this block diagram using the block diagram reduction rules. Step 1 − Use Rule 1 for Block Diagram - Learn about Block Diagrams, See Examples A block diagram is especially focused on the input and output of a system. It cares less about what happens getting from input to output. This principle is referred to as black box in engineering. Either the parts that get us from input to output are not known or they are not important. How to Make a Block Diagram. Block diagrams are made similar to flowcharts. Block diagram - Wikipedia A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. They are heavily used in engineering in hardware design , electronic design , software design , and process flow diagrams .