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Latest Blog Posts

  • Simple Blinking Circuit Diagram
    on Sep 15, 2015 in Bicycle Cars
    Hi Every one .Electronic lovers love LED circuit diagrams because they are very beautiful.So today I'm going to give you a blinking LED circuit Diagram.Already Free circuit diagrams 4U has given you blinking circuit diagrams but this circuit is opera...
  • Simple Solar circuit Diagram
    on Sep 4, 2015 in Lights and L.E.Ds power supplies
    Today We are going to give you a solar circuit diagram.Because most of the people don't know how to connect the solar panel with the batteries and bulbs so this circuit diagram shows you how to do that.When you choose the batteries and bulbs choose t...
  • 230V LED Bulb Circuit
    on Jun 24, 2015 in 230v circuits Lights and L.E.Ds
    Hi every one this is  230V LED  bulb circuit diagram.At the moment 230V LED bulbs have become very popular due to its low power consumption and due to it's clear light.I suppose this little circuit will be very useful circuit for you all.If...
  • 12V Battery level indicator
    on Jun 23, 2015 in Cars Fun Circuits Sensors
    Hi friends today I have brought you some thing special.Actually this would be a very interesting topic for our vehicle lovers.Today Free Circuit Diagrams 4U is going to give you a 12V battery level indicator circuit diagram.According to the battery v...
  • 12V to 230V Inverter with IRF 3205
    on Jun 19, 2015 in 230v circuits Cars Fun Circuits
    Hi every one today  there is a special circuit for you .It is nothing but an inverter circuit diagram.If you supplied 12v you can get 230V as the out put current.IRFZ44t loads up to 200W ,or 350W into IRFZ48 IRF3205 Can load up to  600W.Whe...
  • Simple LED Fader Circuit DiagramHi guys today We hope to give you a very simple fade circuit diagram.First of all I must say that this is a circuit for beginners.When we switch off the circuit it will take some time to switch off the light.After switching off the circuit the LED wi...
  • Night Lamp Circuit Diagram
    on Jun 16, 2015 in 120v 60hz 230v circuits
    Hi every one today We are going to give you a very simple night lamp circuit diagram before this time also FREE CIRCUIT DIAGRAMS 4U has given you night lamp circuits.Here we have introduced 120V circuit diagram with little modification you can use th...
  • Connection testor circuit diagram
    on Jun 16, 2015 in Fun Circuits Tools
    As electronic lovers we all have to face many troubles when we check some circuits.Among them soldering matters act a major part.Sometimes we can't see those faults with our eye.Some times using multimeter is also some what difficult because we have...
  • 230V Knight rider Circuit DiagramAlready Free Circuit Diagrams 4U has given you Knight rider circuit diagrams.But most of guys asked 230V knight rider circuit.I must say that you can convert common Circuit diagram in to 110V or 230V By using a relay.Here we have do a small modificat...
  • Simple 12V power AMP Circuit Diagram
    on Jun 14, 2015 in Bicycle Cars Music
    I suppose all the vehicle lowers will love this circuit Because at present when we do a modification for a vehicle Amplifier  also acts a major role.Today we are going to give you5.8W Power Amplifier Circuit Diagram.Here we have used Ic TA222AP.
  • Simple touch lamp curcuit
    on Jun 14, 2015 in Sensors
    Hi everyone today we have decided to give you a touch lamp circuit diagram.This circuit is operated with 12 V power.And here we have used 2N2905 ,2N3906 and 2N3055 transistors.Personally I think this is a best circuit to modify your car or van.Not on...
  • Automatic Fan (DC)
    on Jun 10, 2015 in motor
    At present we can see the temperature of this planet is increasing day by day so that the people use various types of things to overcome that matter some rich countries use air conditioners but poor countries cant use ac machines because they have to...
  • LED Light Chaser Circuit Diagram
    on Jun 9, 2015 in Fun Circuits Lights and L.E.Ds
    Hi every one Today I'm going to give you LED Chaser circuit diagram.By using this circuit you can light up 6 LEDs. up to now FREE CIRCUIT DIAGRAMS 4U has given you various running circuits Before this we have given Christmas chaser circuit diagram an...
  • Data sheets
    on Jun 8, 2015 in Tools
    Last few days most of guys asked me.Some data sheets of  various radio components.I suppose some of you also may have the same question.There are many web sites which give free data sheets so I'll give you several websites which give free Data s...
  • Simple AM Transmitter Circuit Diagram
    on Jun 7, 2015 in Radio/RF/Wireless
    Today we are going to give you a  simple AM transmitter circuit diagram.At the moment FREE CIRCUIT DIAGRAMS 4U has given you may transmitter circuit diagrams .Before every thing I must say that FREE CIRCUIT DIAGRAMS 4U give you these circuits to...
  • Simple sound generator Circuit
    on Jun 3, 2015 in Music
    You all know normally Free circuit diagrams 4U gives wide range of   circuit diagrams So today we are going to give you a sound generator circuit diagram this circuit can be operated with 12V.Here we have used IC NE555 Note: Build this circuit o...
  • Vedio transmitterHi everyone today I'm going to give you a Vedio transmitter circuit diagram.As the transistor we have used  transistor 2N2222 And I must say this.this circuit is not a tested one this circuit was given by one of my friends you test this circuit...
  • 2W Amplifier Circuit Diagram
    on Jun 1, 2015 in Audio Cars Fun Circuits
    At present We can see most of people are used to listen music.Actually listening music is a very useful thing to vanish their stress.When we go to listen music amplifier is the thing which increase the volume of the music so today Free Circuit Diagra...
  • Simple 230V LED Circuit Diagram
    on May 31, 2015 in 230v circuits LED
    Today free circuit diagrams 4U is going to give you very useful circuit diagram.Because at present we can  see most of the people in the world try to use LED bulbs for their houses instead of common tungsten bulb.When you build this circuit alwa...
  • Simple touch sensitive circuit diagram
    on May 28, 2015 in Fun Circuits NE555 Sensors
    Most of the people requested touch sensitive circuit diagrams from FREE CIRCUIT DIAGRAMS 4U .So today we hope to give you a touch sensitive circuit diagram.Here we have used NE555 IC.This circuit can be operated with 6V power.Removing the led you can...