7805 Voltage regulator l 5V power supply (Electronic basics #1)

Heat generated = (input voltage – 5) x output current If we have a system with input 15 volts and output current required is .5 amperes, we have: (15 – 5) x 0.5 = 10×0.5 =5W; 5W energy is being wasted as heat, hence an appropriate heatsink is required to disperse this heat The 7805 IC is a fixed linear voltage regulator integrated circuit which is commonly used because of its low cost and ease of use. The last two digit of IC (eg: in 7805,it is 05) represents the output voltage from IC.The 78XX series regulators are positive voltage regulators and have protection against overheating and short-circuits,but have less efficiency and requires heatsink .BUCK CONVERTERS may be preferred over 78XX regulators as they are more efficient and does not require HEAT SINK,but they are expensive!!! IF YOU FOUND THIS VIDEO USEFUL DO GIVE IT A THUMBS UP AND CONSIDER SUBSCRIBING...AND GIVE YOUR SUPPORT!!! ----------------------------------------------------------------------------------------- Music by Rock Angel by Joakim Karud Creative Commons — Attribution-ShareAlike 3.0 Unported— CC BY-SA 3.0