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220v ac to 5v dc without transformer

220v ac to 5v dc converted circuit

Needed
4*1N4007 diode

100 ohm 1W

470k 1W

225k/400v capasitor

470uf/100v capasitor

220ohm resistor

15v 1W diode

led

10uf 25v capasitor

7805 ic

1uf 10v
Now the time for circuit design

This is the simplest way for converting 220 ac volts to 5v dc volts (usb current) it is use for mobile phone charger and power bank charger. Capasitor in this circuit for give smooth current. Diode in this circuit for convert ac to dc. (Diode bridge)

 Capasitor in this circuit.

Capacitors in DC Circuits. Capacitors do not play an important role in DC circuits because it is impossible for a steady current to flow across acapacitor. If an uncharged capacitor is connected across the terminals of a battery of voltage then a transient current flows as the capacitor plates charge up.

Diode in this circuit for.

Diodes can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal mixers, signal demodulators, and oscillators. The fundamental property of a diode is its tendency to conduct electric current in only one direction.

Uses of 7805 ic.

Voltage regulator IC's are the IC's that are used to regulate voltage. IC 7805 is a 5VVoltage Regulator that restricts the voltageoutput to 5V and draws 5V regulated power supply. It comes with provision to add heatsink. The maximum value for input to the voltage regulator is 35V

What is senor diode

Zener diodes are normal PN junction diodes operating in a reverse biased condition. Working of the Zener diode is similar to a PN junction diode in forward biased condition, but the uniqueness lies in the fact that it can also conduct when it is connected in reverse bias above its threshold / breakdown voltage.

This project can work without any transformer (only need resisters)

Note=thinner wire have low resistance and big wire have high resistance. resister can change electricity to heat.
heat sink is important for 7805 ic because reduce heat. 

This is the low cost project for convetting ac to dc power.

Explain the project

First of all see this picture
This circuit is use for convert 220v ac to 12v dc.
diode bridge is help to convert ac to dc.
Capasitor use for convert current smoothly(graph).

And then see this circuit
This another circuit for converting 12v to 5v using 7805ic with heat sink.
This is the corrected version of this project

Comments

  1. UnknownOctober 24, 2017 at 6:39 AM

    Your statement: "Note=thinner wire have low resistance and big wire have high resistance" is wrong, the reverse is true: thinner wire has higher resistance than big wire.

    ReplyDelete
  2. zamekDecember 2, 2017 at 5:46 AM

    it is absolute useless and very very dangerous! Don't try it!

    ReplyDelete
  3. FoxVKDecember 2, 2017 at 9:43 AM

    zamek is right

    ReplyDelete
  4. ADITYA UPALEKARDecember 2, 2017 at 10:51 AM

    U canuse this circuit only for glowing leds and another drawback of this circuit is it economical only when output current is below 50-60 ma otherwise transformer or small smps is best

    ReplyDelete
  5. CrystalCrossDecember 2, 2017 at 6:16 PM

    So dangerous. You realize the negative side could potentially be floating at 220V ground potential. If used as a phone charger this could potentially put the chassis of the phone at a very high voltage earth ground potential, which means if you touch the phone with bare feet you could receive a deadly shock. DANGEROUS!

    ReplyDelete
  6. UnknownDecember 3, 2017 at 1:29 AM

    of course it's dangerous, but it's for use with electronics protected from contact with humans. in many appliances, (washing machine ...), have power supplies without transformer and uninsulated.

    ReplyDelete

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