In this circuit, we want a regulated 5VDC as output. Therefore, in order to a get a voltage, V OUT, V IN must be greater than V OUT. They do not and cannot create voltage on their own. Remember, voltage regulators are just devices that regulate voltage down to a certain level. The voltage which enters this pin must be larger than the voltage it is feeding out. This is the pin which, again, receives incoming voltage which the chip will then regulate down. In this circuit, we add a DC voltage supply to the V IN pin of the regulator. This is how a LM317T regulator would look when connected to a circuit so that it supplies a constant DC voltage output. LM317T voltage regulator is used in a wide range in circuits, the most common applications:Ĭommonly used in Desktop PC, DVD and other consumer products The following LM317T circuit schematic is a sample for reference. It’s a reference to make them work in an actual circuit. The input voltage which has to be regulated is given to this pinĪccording to LM317T datasheet, it features:Įliminates the Need to Stock Many VoltagesĬircuit schematic can help us to understand better about how a component or chip is used and worked in circuits. The regulated output voltage set by the adjust pin can be obtained from this pin Adjustable Voltage Regulator LM317T functional demo
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