Introduction: 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
Step 2: Circuit Diagram
this is the circuit diagram of the regulator, i have added a green led in series with the 1k resistor to know whether the circuit is working, (the part is optional ) a voltage between 7v to 15v 1A current can be given as the input.
Step 3: Steps
assemble the transistor and the capacitors according to the circuit diagram in a common circuit board
Step 4: Conclusion
most of the mistakes are formed due to poor soldering and the mistake in connecting diodes. always double check the capacitors are connected in forward bias since it explodes when reverse biased in case of electrolytic capacitor
hope this circuit will be used by the members, and if so i will bring more circuits
85 Comments
2 years ago on Step 3
I have a friend who has a 2N2222 that he says will do the same job. I just want to confirm here that it could be a substitute.
3 years ago
Works perfectly!
Thanks
4 years ago
very nice
5 years ago
Are ceramic capacitors able to be used for this, or do you NEED to use electrolytic?
Reply 4 years ago
not ac current use electrolyt one
7 years ago
Hey Guys I'm working on a project that electricity by walking! In this project actually I insert a Piezoelectric transducer in soles of our shoes and then convert this electricity produced from AC to DC. After converting this current to DC when I walk sometimes I get upto 31v So I would like to know if this circuit is recommended for this project and if not pls suggest me another circuit with its circuit diagram And pls Its my sincere request.
Adityan A
adityan13@gmail.com
Reply 5 years ago
WTH!!!
super great idea bro!!!
6 years ago
your out put is 5v andhow many ampere?
Reply 5 years ago
2A is a too much for such small device unless you have exactly higher voltage as same as the dropout voltage of this ic.:)
Reply 6 years ago
Check the datasheet of the regulator that you use as it can vary and/or find one with the required output current.
For example, you can find anything from 100mA in a TO-92 package, to 2A in TO-220, and various others in between, and probably more either side.
6 years ago
hello , i have 52 to 44 volts , and i want to use 5 v regulator, what size of the capacitor should i use ??
Reply 5 years ago
you cant either you have a 35v supply.because these linear regulators has a voltage drop across it so when Vin and Vout difference getting higher the power dissipation will be higher too.its just waste of power.you could use a buck converter. :)
Reply 6 years ago
The L7805 has a maximum input of 35V. You will need to reduce your voltage before applying up to 35V to the IC.
6 years ago
can someone help me design a specific circuit for my project. I can pay.
Reply 5 years ago
what kind of circuit are u opting for?
Reply 5 years ago
what type of circuit are u opting for?
Reply 5 years ago
i will be there to help
6 years ago
design a analog circuit that if capacitor value is below 6V then output pulse come. input 10V
7 years ago
how can you tweak this cicruit in order to produce lesser current. I need 5v and 400 ma output. Should I get another capacitor with different capcitance, if so what?
7 years ago
hi!
can you tell me which regulator i have to use if i have to drop from 19v to 16v 3.5A