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Simple Solar circuit Diagram

09/04/2015 02:11:00 AM

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 > read more

230V LED Bulb Circuit

06/23/2015 23:39:00 PM

Hi every one this is > read more

12V Battery level indicator

06/23/2015 14:02:00 PM

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 > read more

12V to 230V Inverter with IRF 3205

06/19/2015 02:19:00 AM

Hi every one today > read more

Simple LED Fader Circuit Diagram

06/16/2015 23:16:00 PM

Hi 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 > read more

Connection testor circuit diagram

06/16/2015 22:48:00 PM

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 > read more

Night Lamp Circuit Diagram

06/15/2015 23:59:00 PM

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 > read more

230V Knight rider Circuit Diagram

06/14/2015 01:14:00 AM

Already 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 > read more

Simple 12V power AMP Circuit Diagram

06/14/2015 00:36:00 AM

I suppose all the vehicle lowers will love this circuit Because at present when we do a modification for a vehicle Amplifier > read more

Simple touch lamp curcuit

06/14/2015 00:08:00 AM

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 > read more

Automatic Fan (DC)

06/10/2015 02:06:00 AM

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 > read more

LED Light Chaser Circuit Diagram

06/09/2015 13:59:00 PM

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 > read more

Data sheets

06/08/2015 14:03:00 PM

Last few days most of guys asked me.Some data sheets of > read more

Simple AM Transmitter Circuit Diagram

06/07/2015 00:45:00 AM

Today we are going to give you a > read more

Simple sound generator Circuit

06/02/2015 23:14:00 PM

You all know normally Free circuit diagrams 4U gives wide range of > read more

Vedio transmitter

06/02/2015 14:27:00 PM

Hi everyone today I'm going to give you a Vedio transmitter circuit diagram.As the transistor we have used > read more

2W Amplifier Circuit Diagram

06/01/2015 03:05:00 AM

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 > read more

Simple 230V LED Circuit Diagram

05/30/2015 23:59:00 PM

Today free circuit diagrams 4U is going to give you very useful circuit diagram.Because at present we can > read more

Simple touch sensitive circuit diagram

05/28/2015 22:37:00 PM

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 > read more

Simple MW Transmitter Circuit Diagram

05/27/2015 01:18:00 AM

Today I'm going to give you a simple MW Transmitter.This transmitter can be operated with 9 v power supply.Here we have used common transistor BF494B.Here we have used MW antenna coilyou can use the 8 ohm speaker to speak that means here the speaker > read more

Simple Dark Activated Switch

05/25/2015 23:30:00 PM

You all know FREE CIRCUIT DIAGRAMS 4U always try to give simple and useful circuit diagrams.Today we are going to give you a Simple dark activated circuit diagram.When the dark comes this circuit will activated.This circuit is operated with 12v power > read more

Simple Flasher circuit Diagram

05/12/2015 12:54:00 PM

Today FREE CIRCUIT DIAGRAMS 4U is going to give you a very simple flasher circuit diagram.It means after giving the power for the circuit the LED will start to blink.Here we have used very common Transistor 2N2222.This circuit is operated with 12V po > read more

Powerful FM Transmitter Circuit Diagram

05/07/2015 15:30:00 PM

Today we are going to give you very interesting circuit diagram.Normally most of electronic lovers love to make transmitter circuit diagrams.Already FREE CIRCUIT DIAGRAMS 4U has given you many transmitters.The specialty of this circuit diagram is thi > read more

110V / 230Vsimple Music Bell

05/03/2015 23:48:00 PM

Today we are going to give you a very simple circuit diagram.It is a music bell circuit diagram Already FREE CIRCUIT DIAGRAMS 4U has given you many musical bell diagrams so this circuit is design for 110V .Here If you changed the relay you can use th > read more

120V 10 LED Circuit Diagram

04/30/2015 01:02:00 AM

Most of the developed countries use 120V.But some countries use 230V.Most of the members who use 120V asked some circuits which can be run with 120V.So here we are going to give you very simple and useful 120V circuit.You can use the same circuit for > read more

Simple 230V LED Flasher circuit Diagram

04/27/2015 00:51:00 AM

Most of our users asked about 230V LED Flashers.You all know already Free Circuit Diagrams 4U has given many LED circuit Diagrams recently also we gave another simple circuit diagram for 230V LED Flasher. So today also > read more

230 V Simple Blinking Circuit Diagram

04/23/2015 21:09:00 PM

> read more

Simple wesak Decoration with 100 LED bulbs

04/21/2015 23:35:00 PM

You all know Free Circuit diagrams 4U always try to give new things.and also our main purpose is to give very simple circuit diagrams today I'm going to give you a very simple circuit diagram.Here we have used tube light starter.When the starter is l > read more

Robo circuit Diagram ( LED )

04/21/2015 02:40:00 AM

This is a very famous circuit diagram among electronic lovers.Because we can use this circuit for various purposes. Free Circuit Diagrams 4U has given you various circuits with this circuits not only LED circuits we can use > read more

How to connect a horn to a car?

03/27/2015 00:11:00 AM

Today I'm going to give you a simple circuit diagram which explains how to connect your horn to the car.you all know Free Circuit Diagrams 4U team has given thousands of useful car circuit diagrams. If we talk about this circuit, this circuit runs wi > read more

220V LED Light Circuit Diagram

01/12/2015 12:05:00 PM

At present most of people like to use LEDs because LEDs save electricity.Today I'm going to give you a simple 220V LED light circuit diagram.I think you all know Free Circuit Diagram always give useful circuit diagrams.We hope to give a circuit with > read more

Simple Christmas chaser

12/10/2014 11:33:00 AM

Today Free Circuit Diagrams 4U is > read more

230 V Christmas lamp with 8 modes

11/30/2014 23:12:00 PM

Today Free circuit Diagrams 4U is going to give you a 8 mode 230V Christmas lamp circuit .This circuit is operated with UTC 8156.When you use bulbs use 40W bulbs.Build this circuit on a PCB. Note:- IF you are a underage guy Don't try this circuitBe > read more

Christmas Light Circuit Diagram

11/20/2014 00:05:00 AM

> read more

Wireless Power Transmitter Circuit Diagram

10/09/2014 01:08:00 AM

At present we can see people use wireless transmission now it has become a very famous electronic device > read more

Simple Crystal radio

10/02/2014 03:01:00 AM

This is a simple AM crystal radio.You can wind #22 enermale copper magnet wire on cardboard roll..Here we have used 1N34A Crystal diode.If you want to lessen well you can connect ear phone connection to the amplifier.You have to tap L2 and connect it > read more

Cimple LED Flasher Circuit Diagram

09/28/2014 13:38:00 PM

This is a simple circuit diagram .Here we have used common IC LM317 T.You can choose flowing current according to the chart this circuit can be operated with 9V to 20V.Note# Build this circuit on a PCB > read more

230 V LED Circuit Diagram

09/15/2014 13:37:00 PM

Today we are going to give you a simple LED circuit diagram.This circuit can be operated with 230V power supply.This is very useful circuit as a indicator.This circuit is not suitable for under ages > read more

Simple circuit to listen to aircrafts

08/28/2014 09:25:00 AM

> read more

CD 40017 Data

08/19/2014 14:02:00 PM

CD 4017 is a very famous IC .in 1980s Through knight rider teledrama most of people wanted to make the knight rider circuit diagram.Not only that by using this data sheet you can create new circuit diagrams.I suppose this will be a useful sourse for > read more

Simple Music Generator

08/18/2014 15:50:00 PM

This is a simple and enjoyable circuit diagram.Already free circuit diagrams 4U has given you many music bells.to build up this circuit we have used only on IC it is LM386 and you can run this circuit with 5VNote: > read more

Simple LED Flasher Circuit Diagram Circuit ( With one transistor)

08/16/2014 23:08:00 PM

Today we are going to give you a very famous circuit diagram.Here we have used common Transistor BC 547.This circuit can be operated with 6V power supply So that this is a very famous circuit diagram among motor cycle owners.Note : # > read more

Simple Electric Shock Gun

08/15/2014 00:23:00 AM

This is a simple electric shock gun.You all know free circuit diagrams 4U always try to give useful and funny circuit diagrams .This circuit is not too powerful one so you can get fun with it.Here we have used audio transformer.This circuit can be op > read more

Simple Water Sensitive Circuit Diagram

08/14/2014 14:35:00 PM

This is a very useful and simple circuit diagram we can use this circuit for different uses.this circuit is sensitive for water so when the touch pads touch water it will light up the LED.Removing the LED you can use a relay > read more

simple motor speed controller circuit diagram

08/14/2014 13:42:00 PM

This is a simple motor control circuit diagram.This circuit can be operated with 12v.So you can fix this circuit to your car or truck to control motors or fans.We must say that already free circuit diagrams 4u has given you motor speed controlling ci > read more

Touch Sensitive Circuit Diagram

08/13/2014 18:22:00 PM

This is > read more

Simple UHF Tv transmitter circuit diagram

08/13/2014 02:10:00 AM

This is a very interesting circuit But this is illegal in some countries so first of all we must say that you have to test this with your own risk Free circuit diagrams 4U doesn't take any responsibility of this.Here We have used very common transist > read more

Simple LED Flasher for Kites

08/12/2014 00:03:00 AM

Today we are going to give you a LED Flasher Circuit Diagram For kites Because at present most of people like to send kites even at night time.We must say that already free circuit diagrams 4u has given you many LED circuit diagrams.You can build thi > read more

Simple Crystal Radio Circuit Diagram

08/07/2014 03:25:00 AM

This is a very simple Crystal > read more

Simple Flasher Circuit Diagram

08/05/2014 01:06:00 AM

> read more

LED Circuit

07/29/2014 13:35:00 PM

Free circuit diagrams 4U has given you many > read more

Simple radio circuit Diagram

07/29/2014 02:12:00 AM

Already > read more

One LED with 9V Power

07/23/2014 13:33:00 PM

Hi every one you all know Free circuit Diagrams 4U always give you easy and simple circuit diagrams so today we are going to give you a special circuit diagram.By using this circuit diagram you can light up a LED with 9V > read more

Symbols of Circuits

07/21/2014 22:40:00 PM

Some new comers for the electronic field have sent emails for FREE CIRCUIT DIAGRAMS 4U asking the symbols > read more

1W LED Driver Circuit Diagram

07/20/2014 01:14:00 AM

At present most of people use LED light systems.Because LEDs can save our electricity on the other hand we can see LEDs have good life time.So that most of factories use LEDs > read more

230V LED tube light Circuit Diagram

07/17/2014 14:16:00 PM

Hi every body Free Circuit Diagrams 4u is giving wonderful and very simple circuit diagrams so today I'm going to give you 230V tube light circuit diagram at present we can see we all have to fight with electricity bill but you know if you can connec > read more

Magnatic Power On Off Switch

07/17/2014 03:20:00 AM

This is very useful circuit Diagram already Free Circuit Diagrams 4U has given you many useful circuit diagrams.Today We are going to give you a magnetic power on off switch basically this circuit diagram is with robots.By using a magnet you can on a > read more

One IC Transmitter Circuit Diagram

07/16/2014 00:42:00 AM

Free Circuit Diagrams 4U has given you many transmitter circuit diagrams today I'm going to give you some transmitter circuit with some modifications.This circuit can send signals up to 100 M.Here we have used IC UPC 1651.This circuit can be operated > read more

Simple Sound Sensitive Circuit Diagram

07/14/2014 00:20:00 AM

At present we can see many light systems in parties in clubs or in various types of vehicles.Among them light sensitive circuits get a special place Because most of people use light sensitive circuit diagrams to colorful their parties.At present most > read more

Simple IR circuit Diagram circuit (230/110V)

07/11/2014 14:03:00 PM

Free circuit Diagrams 4U always give you new circuit diagrams .So today we are going to give you IR Remote control circuit diagram.The main part of this circuit is CD4017.This circuit can be operated with 5V. Tosp 1738 is used to get IR signals.And a > read more

Simple moter speed Cntroller circuit Diagram

07/09/2014 12:52:00 PM

This is a simple motor control circuit diagram.Free Circuit Diagrams 4U has given you speed controllers before this but the specialty of this circuit is > read more

Simple AM/FM/SW/MW booster Circuit

07/07/2014 13:10:00 PM

Today Free Circuit Diagrams 4U is going to give you a very useful circuit diagram in some countries we can see some radio signals are poor so this is the best answer .Here We have used very common Transistor MPF102 use 470uH Coil for short wave and > read more

Simple Music Generator with UM66

07/06/2014 15:01:00 PM

Hi every one Free circuit diagrams 4U always try to give you useful and simple circuit diagrams.Already we have given you many circuit diagrams with UM 66 Ic But through this circuit diagram you can get a good sound.Here We have used Bc 148 transisto > read more

Crystal Radio circuit Diagram

07/05/2014 23:46:00 PM

This is a very joyful circuit diagram because after building this circuit you can listen to radio channels through your own radio.The special thing of this circuit is this circuit doesn't need external power.That means this circuit gets the power fro > read more

Simple Transmitter Circuit Diagram

07/04/2014 13:04:00 PM

Today Free Circuit Diagrams 4U is going to give you a simple Transmitter circuit.This circuit runs with NE555 IC.We can operate this circuit diagram with 9V power supply.before supplying power don't forget to fix a wire for the antenna ( about 30 inc > read more

12V Police Flashing Light Circuit

07/04/2014 02:10:00 AM

This circuit is a very famous circuit diagram among the electronic circuit lovers.Today Free circuit Diagrams 4U is going to give you a Famous police flashing LED circuit diagram.In this circuit > read more

Single Transistor Transmitter Circuit Diagram

07/03/2014 13:44:00 PM

We all like to make transmitters.Most of guys sent emails to Free Circuit Diagrams 4U asking simple transmitter circuit diagrams .I suppose this would be the best answer for that.The special thing of this circuit is this circuit runs with one transis > read more

One IC Led Flasher circuit Diagram

07/03/2014 03:02:00 AM

Most of people always send emails to Free Circuit Diagrams 4U asking simple Circuit diagrams. Here I'm going to give you a very simple flasher circuit diagram the specialty of this circuit is we can operate this circuit with 1.5 V power supply.And we > read more

Two way Switches Circuit Diagram

07/02/2014 13:33:00 PM

Most of people sent emails to Free Circuit Diagrams 4u > read more

12V to 230V Inverter Circuit Diagram

07/01/2014 13:42:00 PM

At present we can see electricity has become an essential thing with out electricity it is difficult to lead our life.Free circuit Diagrams 4u always try to give you useful things.So today I'm going to give you an inverter circuit diagram.By using th > read more

How to fix a plug

06/28/2014 22:59:00 PM

Some guys have asked me how to fix a plug.Here I have mentioned how to fix a plug.Some times we can see some plugs without a fuse also.And the other thing is some countries use some what different colored wires. Note: > read more

6V L.E.D circuit diagram

06/28/2014 14:47:00 PM

so-many people ask > read more

L.E.D light for your bicycle

06/28/2014 14:32:00 PM

When we ride bicycles.Some times we have to face some troubles at night.Specially when we ride mountain > read more

Wireless Power Generator Circuit Diagram Circuit

06/26/2014 01:25:00 AM

Most of people like to think about wireless power.Yes now it has become a reality.So here I'm going to give you a wireless power circuit diagram.In this circuit We convert Dc to Ac then we have the ability to send power from one coil to another.This > read more

How to operate Ac with Dc

06/25/2014 01:19:00 AM

Most of you requested > read more

Simple Fm circuit Diagram

06/05/2014 00:46:00 AM

I think most of people like to make radio circuits.Because most of them like to listen radio programs from the radio which they made by their own hands.You all know Free circuit Diagrams 4U is a website which is giving simple circuit diagrams.So that > read more

Simple Fm Transmitter Circuit Diagrams

06/03/2014 03:21:00 AM

Most of you guys send > read more

1.5V Simple RF transmitter circuit diagram

05/28/2014 14:46:00 PM

Most of you guys asked about Radio transmitter circuit diagrams.Today I;m going to give you a transmitter which is operated with 1.5 power.and another thing is this circuit runs with 2N2222 .after building up this circuit diagram you can check this w > read more

110V LED light circuit diagram

05/27/2014 02:16:00 AM

Most of you who use 110V asked me LED light circuits which can be operated with 110V.By using this circuit you can light up 4 LEDs form110V.Use white colour LEDs Note: > read more

230V /110V simple Multivibrator Circuit Diagram

05/12/2014 00:26:00 AM

Most of guys asked about 230V flashing circuits so I suppose this would be the most easiest circuit diagram.Here we have used common multivibrator circuit and two 3V relays.You can connect your AC line via the relay.( Use relay as a switch) Even the > read more

Simple Solar Charger Circuit Diagram

04/22/2014 22:22:00 PM

I suppose this circuit is a very useful circuit diagram for you all.Because this circuit shows how to connect a Solar panel with a circuit and a battery.You have to use a battery according to the power of the solar panel.here I have used 1N5817 diode > read more

Simple Tracker circuit Diagram

04/22/2014 14:00:00 PM

Most of the guys asked about tracking circuits so today I'm going to give you a tracking circuit diagram.The special thing of this circuit is you can get the signals of this circuit through a normal radio.This circuit can signals 200M to 400M.Accordi > read more

Antenna Amplifier Circuit Diagram

02/13/2014 02:17:00 AM

This is an Amplifier circuit diagram We can use this circuit to amplify AM,FM,SW radio waves.Here I have used MPF 102 transistor circuit but If you are unable to find it you can use 2N4406.When you build this circuit diagram build this circuit in a s > read more

Music bell circuit with UM66

02/06/2014 23:04:00 PM

This is a very useful circuit because we can use this circuit to generate different music sounds by using UM66 .This circuit operates with 3V power supply.We have given you UM66 circuit diagrams before.In this circuit we have used different parts.Bec > read more

Symbols used in Circuit Diagrams

01/31/2014 12:29:00 PM

Most of electronic circuit lovers asked about electronic symbols.So today I'm going to give you useful electronic symbols.I got these things from my electronic book called 100 electronic circuit.I suppose this will be useful for you. > read more

Simple IR Signal Detector

01/31/2014 00:17:00 AM

This is a very useful circuit diagram.We all know we can't see IR signals with our normal eye.So that when our remote controllers are not working it is difficult to check whether our > read more

Simple Multivibrator Circuit Diagram

01/27/2014 10:44:00 AM

This is a simple multivibrator circuit.This circuit can be operated with 9V power supply.Most of guys asked > read more

Simple IR transmitter and a receiver

11/22/2013 01:17:00 AM

This is a very useful circuit for the people who have cars and vans because this circuit operates with 12V.Operating frequency of this circuit is 160 Hz.And you can send signals about 2M-5M or 2M-15M it depends on the audio transformer which you use. > read more

Simple 100M VHF video Transmitter

11/08/2013 23:29:00 PM

I think most of you like to make transmitters today I'm going to give you a video transmitter.The special thing of this transmitter is you can operate this circuit with 9V power supply and you can send signals about 100M.I have used this circuits for > read more

Free power from the telephone line

11/07/2013 01:31:00 AM

I think this circuit will be very useful for you all to get some electricity when you are in a power cut.You can get > read more

Very simple FM Transmitter Bug

10/29/2013 13:33:00 PM

Most of viewers asked about FM transmitter circuit today I'm going to give you very small and some what powerful FM transmitter.The special thing of this circuit is we can operate this circuit with 3V.Here you can use BF414 / BF324 / BF606 transistor > read more

Simple Christmas Star Circuit diagram

10/27/2013 13:18:00 PM

This is a simple Christmas Star circuit diagram.Here I have used common transistors.You can operate this circuit with 3-9 V.And another special thing is there are 18 LED s of this circuit so This circuit will give a wonderful look for your Christmas > read more

230V LED LIght

10/16/2013 12:09:00 PM

Today I'm going to give you a very useful circuit diagram.At present we can see many people are burning from electricity matters because at present many people have to pay a big electricity bill.I think if you can build up this circuit you can reduce > read more

Pulse moter circuit diagram

09/02/2013 13:10:00 PM

This is a simple pulse motor circuit diagram.you can use this circuit to power up pulse moters.Here I have used very common IC NE555 you can control the speed of the mortar by adjusting When you use this circuit don't supply over 12V. > read more

parallel and series circuit diagrams

08/25/2013 21:17:00 PM

Some viewers hadn't clear idea about parallel and series circuits.Here you can see > read more

Simple motor Circuit diagram

08/25/2013 08:22:00 AM

> read more

230V LED Circuit Diagram

08/22/2013 15:34:00 PM

I think this circuit is very important circuit .because you can fix this circuit with a 230V switch or plug at that time you can see whether power is available or not.Not only that we can fix this circuit with door bells.In my home also I have attach > read more



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