What is voltage regulator circuit?
What is voltage regulator circuit?
A voltage regulator is a circuit that creates and maintains a fixed output voltage, irrespective of changes to the input voltage or load conditions. While voltage regulators are most commonly used for DC/DC power conversion, some can perform AC/AC or AC/DC power conversion as well.
What is IC 317?
The LM317 is a popular adjustable positive linear voltage regulator. It was designed by Bob Dobkin in 1976 while he worked at National Semiconductor. The LM337 is the negative complement to the LM317, which regulates voltages below a reference. It was designed by Bob Pease, who also worked for National Semiconductor.
Which circuit is used for voltage regulator?
Simple DC power supplies can be made with rectifiers. But they suffer from changes in the input or at load. This initiated the development of the linear regulator (series/shunt) circuits*. Linear regulators maintain a constant voltage by varying their resistance to counterbalance input voltage change.
What is the function of a voltage regulator circuit?
A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. There are two types of voltage regulators: linear and switching.
What is the output of 7824?
The name 7824 signifies two meanings, “78” means that it is a positive voltage regulator and “24” means that it provides 24V as output.
Why LM317 is called so?
It is also called a temperature-independent reference voltage frequently used in integrated circuits. An error term is added because some quiescent current flows from the adjustment pin of the device. Hence, this LM317 circuit can be treated as LM317 Current Regulator Circuit.
Is transistor a voltage regulator?
The transistor works as a variable resistor regulating its collector emitter voltage in order to maintain the output voltage constant. With the input operating conditions, the current through the base of the transistor changes.
How does a voltage regulator operate?
A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. It compares the output voltage with a precise reference voltage and adjusts the pass device to maintain a constant output voltage.
What is the maximum input voltage for a LM317?
Capable of providing upto 1.5A current at the output.
What is capacitor for LM317?
The capacitor C1 used for the filtering of DC input voltage and further fed to the Vin pin of the LM317 voltage regulator IC. The adjustable pin is connected with the two external resistor, and connected with the Vout pin of the IC. The capacitor C2 is used for the filtering the output voltage received from the Vout pin.
What is the three terminal voltage regulator?
The popular 3 terminal fixed regulators available today are in the form of IC 7805, IC 7809, IC 7812, IC 7815, and IC 7824, which correspond to fixed voltage outputs of 5 V, 9 V, 12 V, 15V, and 24 V.
What is the use of voltage regulator?
Voltage regulators are used in devices like air conditioners, refrigerators, televisions etc. in order to protect them from fluctuating input voltage. The major problem faced is the use of relays in voltage regulators . Relays create sparks which result in faults in the product.
