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Electronic Circuit,Schematic Diagram,Circuit Diagrams

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Tuesday, May 12, 2015

Simple Flasher circuit Diagram




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 power supply so that The people who have cars and vans can use this circuit to decorate their vehicle.





Note: build this circuit on a PCB
Don't supply over 12V power

Thursday, May 7, 2015

Powerful FM Transmitter Circuit Diagram



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 this is some what powerful.By using this transmitter you can send signals up to 5ooM.here we have used very famous transmitter 2N2219 .This circuit is operated by 12v power supply.Specially I would like to tell you If your country doesn't allow you to build transmitters don't try this.We have publish this with the educational purpose.If you misused this circuit FREE CIRCUIT DIAGRAMS 4U doesn't take any responsibility of that.





Note:

# Build this circuit on aPCB

# Without connecting the antenna don't supply power for the circuit

Sunday, May 3, 2015

110V / 230Vsimple Music Bell


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 this circuit with 230v not only that you can use this circuit with your motor bike or car.supply 110V to 110V relay and supply 3V to the um66 unit.





Note :-
             Build this circuit on a P.C.B
             If you are a kid don't try this circuit diagram

Wednesday, April 29, 2015

120V 10 LED Circuit Diagram

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 230V by doing some little bit modifications.


Note: If you are a kid don't try this circuit.

Sunday, April 26, 2015

Simple 230V LED Flasher circuit Diagram



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  We are going to give you a similar circuit diagram There are only few parts for this circuit diagram.After giving 230 V power  the LED will begin to blink.

Note

# Please build this circuit on a pcb
# If you are a kid don't try this circuit diagram

Thursday, April 23, 2015

230 V Simple Blinking Circuit Diagram


Today We are going to give you a very simple circuit but it is very useful circuit diagram.Already FREE CIRCUIT DIAGRAMS 4U has given many 230 V circuit diagrams So this is the another useful circuit diagram .This circuit is blinking after supplying 230 v.Always try to use the correct values.



Note:- Build this circuit on a P.C.B
           If you are a  kid Don't try this circuit Because 230V is dangerous

Tuesday, April 21, 2015

Simple wesak Decoration with 100 LED bulbs


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 lighting up  LED bulbs also will start to blink.You can use this method for 230 normal bulbs too.Enjoy this






Note

If you are a kid Don't try this circuit Because 230V is dangerous
And also you can use this circuit with 110V

Robo circuit Diagram ( LED )


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  timer circuits with this circuit diagram..This circuit diagram is called robo circuit because this circuit has used to decorate robots that is the reason of using this name.Here we have used D400 transistor and also you can extend the blinking time of the LEDs by changing the values of 100uF and 47K.





Note :

Don't supply over 6V power for the circuit diagram

Thursday, March 26, 2015

How to connect a horn to a car?

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 with 12v power supply.After fixing the horn to the vehicle tune the nail which is behind the horn to get a quality sound.( But some horns don't have such a nail so you cant tune them)



Note: 
           If you are a kid don't try this circuit Because 12V batteries contain high ampere 
          Always use high ampere wires to supply the current

Monday, January 12, 2015

220V LED Light Circuit Diagram




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 more LEDs soon






Note:
             1)  Build this circuit on a PCB
             2) If you are a kid don't try this circuit because 230V is dangerous
 
 

Wednesday, December 10, 2014

Simple Christmas chaser


Today Free Circuit Diagrams 4U is  going to give you a useful circuit diagram.This circuit is mainly operated by two ICs.One is NE555 and IC 4017.When you  build this circuit use a  PCB.If you use blue colour LEDs it would be so attractive.


Note:-

 # Don't supple over 9V
 # Build this circuit on a PCB

Sunday, November 30, 2014

230 V Christmas lamp with 8 modes



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 circuitBecause 230V  is dangerous

Wednesday, November 19, 2014

Christmas Light Circuit Diagram



Today i'm going to give you a Christmas light circuit diagram.This circuit is called chaser circuit diagramYou all know FREE CIRCUIT DIAGRAMS 4U has given many Christmas circuit diagrams.This circuit is operated with IC 4017 .This circuit can be operated with 9V power supply.If you used blue color LED it would be so attractive The list of item is mentioned below.


1- IC-CD4017          Decade Counter Divider with 10 Decoded
 1- IC-NE555           Timer IC
 2- C-10uF 16V        Electrolytic capacitors
 1 -R-2.7K                Resistors         1/4 W 5%
 1- R-470 ohms         Resistors         1/4 W 5%
 1 -R_1K                  Resistors           1/4 W 5%
 1- VR_10K             Variable resistor
 10- LED  Blue color 


Note:-
           # Don't supply over 9V
           # When you are soldering ICs always use a IC base

Wednesday, October 8, 2014

Wireless Power Transmitter Circuit Diagram



At present we can see people use wireless transmission now it has become a very famous electronic device  so today Free Circuit Diagrams 4U is going to give you a wireless power transmitter circuit diagram.This circuit can be operated with 5V power supply. You can use different coils with different Gage and test what gives the maximum power.Here we have used common transistor BD139.





Note:
       # Build this circuit on a PCB
       # Don't supply over 5V

Thursday, October 2, 2014

Simple Crystal radio

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 with 20-80 feet antenna.and you have to ground the circuit use a mettle rod for that.


Note: 

   # When you make this circuit be patient because you want be able to get the result at once


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