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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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