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A voltage regulator IC maintains the output voltage at a constant value. 7805 IC, a member of 78xx series of fixed linear voltage regulators used to maintain such fluctuations, is a popular voltage regulator integrated circuit (IC). The xx in 78xx indicates the output voltage it provides. 7805 IC provides +5 volts regulated power supply with provisions to add a heat sink.
Use this standard Voltage regulator IC to obtain 5V power supply from a variable DC power supply (>=7V at least)
Input voltage (5V-18V)
Regulated output; 5V (4.8V-5.2V)
Please connect decoupling capacitors between the input and output pin w.r.t ground to avoid ripples.
7805 5V Voltage Regulator
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