5v Regulator

5v volt regulator circuit which can be made from only three components, its simple, cheap and easy way to get a current up to 1A and a voltage of more than 5v can only be regulated by this circuit, this circuit can be used as a bread board power supply

Step 1 Components

1.............. L7805

heat sink ( a small aluminium plate from scrap)

1...............10uf 25v (electrolytic capacitor)

1................1uf 25v(electrolytic capacitor)

green LED (optional)

1k resistor(brown black red) (optional)

soldering iron

wires

common circuit board

Comments

[cubbydebry]

Thanks so much,
I needed this for a usb charger and had no idea where the capacitors were supposed to go

[sooraj619]

thank you

[dosftw]

Have you used vero stripboard or dot matrix stripboard?

[sooraj619]

dot matrix stripboard

[ecopp96]

Estuve probando y tu sistema me lavantaba mucha temperatura y me genera mucho ruido termico. Por ende decidi probar y consegui una formula algo mas refinada usando c1= 2200 uf a 25v y c2=220uf a 25v

[sooraj619]

bien, ¿cómo?

[pandyaketan]

Good work.

But if you make a diode bridge (see my IBles, by clicking my name on the left), you can use 220/110 V AC mains also to step it down to low voltage levels...

reg
ketan

[andy70707]

The 7805 isn't a transistor. Also, the heatsink in the TO220 package is usually plenty, and as for the capacitors, smaller 100nF and 220nF non-polarised capacitors can be used instead.

[ray_Bond]

first thing sooraj bhai its regulator not transistor second its rating is for max current of 1 amps ( at 25*C of temp. and proper heat sink ) and max input voltage 7.25v to 12v. no offense bhai par packing also plays role in amps rating.............:)

[sooraj619]

ok

[zack247]

nice!
i never used the capacitors before, how do they affect the performance of the 7805?

[Robot Lover]

the capacitors reduce ac "ripples" from the dc current.

[sooraj619]

it filters ripples from the input and gives a smooth output

[AgeingHippy]

Hi Zack

I am an *extreem* newbie, but the capacitors help smooth out or regulate the power supply so that you have less noise on your lines which can cause havoc with your digital signals.

I am sure a pro will chime in and give a clear and complete answer.

[ghuebo]

Really good! that´s what I was looking for! but I've a question... I´m using a 12V 1A dc power supply and the L7805 is hot as hell! is this normal??
Thanks!

[sooraj619]

yes, you may increase the size of the heat sink to reduce the heat

[jordanwade]

but i use it for 9v to get 5v

[jordanwade]

cant u just use a 7805 regulator?