4.5V To 12V DC

This ic 4.5V to 12V boost circuit.You all can get lots of advantages through this circuit.Here I have used famous IC LM2698.




Note

# input supply voltage range is 2.2V to 17V DC and outputs ranging from 2.2V to 17V DC

# IC can deliver only up to 400mA.So don't connect lodes more than that

# Build this circuit on a PCB

PNP & NPN Transistors

Lots of beginners had a problem to recognize E,C,B.So I suppose this post will be so useful for them.When I was making circuit diagrams when I was in my child hood I myself also faced for the same situation

The Joule Thief

This circuit is called " The Joule Thief" Because this circuit can light up LEDs with low voltage that is the reason for this.If you have drained batteries you can lite up a LED by using this circuit.Now I thing you can understand how much important this circuit is

LED Flasher circuit Diagram

This is Multi vibrator circuit diagram H ere you can attach up to 4 LEDs.I suppose this circuit will be so useful for all.You can use this circuit to decorate your Wesak Lanterns




Note

# This circuit can be operated with 3 to 9V

5 to 500 feet transmitter circuit diagram

This is so useful circuit because this circuit can transmit signals 5 feet to 500 feet.Here I have used common transistor 2N5225 If you are unable to find this you can use any general purpose transistor.



Note

# About L1 is mentioned on the picture

# This circuit operates with 9V DC

# use 5cm wire as an antenna

Solar battery charger

This is solar battery charger with over charge protection.This circuit depends on IC LM723.Some times some batteries destroy because of charging over the limit.But this circuit contains an over charge protection unite.

Siren for Factories ( 2)

This is powerful siren circuit diagram.You can get lots of supports from this circuit because you can use this circuit for your alarm circuit then you will be able to get maximum results.



Note

This circuit can be operated with 12V power supply.

Siren for Factories (6W)

This is a siren circuit diagram But this circuit is little bit different.Because this circuit can generate up to 6W power here I have used famous IC 4011



Note

# This circuit operates with 12v power supply

#this get about 1A current

9V to 3V converter

This circuit can generate 3V from 9V power supply.Here I have used common Famous IC LT1073.

12V to DC 300V 55 mA

This circuit can generate 300v from 12V power supply.This circuit operates with common transistors 2N3055 and 2N1305.This circuit can provide 55mA current.you can get fun with this



Note

# Be careful when you operate this circuit

# Build this circuit on a PCB

12V to 6V/7.5V/9V converter

This is good news for vehicle lovers.Because most of you may think to convert 12V to 6V / 7.5V /9V .so this is the circuit to do that you can get 6V/7.5V and 9V from this circuit.Here I have used famous transistor 2N3055.This circuit can generate about 2A






Note

# fix this circuiit in a box

# Build this circuit on a PCB.

Wesak Flasher with 6 Bulb

Wesak festival is getting near.So I decided to give you a very useful circuit diagram this circuit can drive 650Watt (Lamp 220V ) per Lamp channels.By using VR1 you can control the speed of your lamps.Here I have used very famous Ic 4017 and Ic NE 555.You can directly connect this circuit for 230V.



Note

# This circuit is 230V circuit so this is not good for kids

# don't exceed 650W

6V lamp Flasher circuit Diagram

This is 6V lamp flasher circuit diagram.You can use this circuit for your various purposes.or you can use this for your 6V moter bike

Blink LED According to the sound

This is very simple circuit.Here according to the sound you can see the LED is also blinking.Beginners can test this circuit and try to make new thing by using this circuit.That is my will....

One LED Flashing Circuit

This is LED flashing circuit Here I have used common IC LM3909.This circuit operates with 3V power supply.After making two circuits like this you can build a multi vibrator circuit.

100W LED Dimmer Circuit Diagram

This is 220 Ac light dimmer circuit.This circuit can load up to 100W.Use a common diac and common triac for this circuit.By usind VR1 you can contrall the power of load.



Note

# Triac needs a heat sink.

How to make a simple motor

This is a simple moter circuit.These pictures show how to make a simple motor.first of all you should take two plates that I have mentioned bellow.and set it up on a wooden plate as picture 3 has shown.Then after take coils and wrap it around the plastic stick. When the stick rotates the coil should have a contact with the current supplier so after wrapping place the coil as picture shows.place a magnet middle of the stick as picture shows.

Electronic Circuit Diagram symbols(3)

This is for beginners.Here there are more symbols

Electronic Circuit Diagram symbols(2)

Here I have given more symbols of circuit diagrams.More symbols will be given in the future

Electronic Circuit Diagram symbols(1)

electronic circuit diagram symbols are mentioned here.There are lots of symbols Thoes symbols will be presented in the future.

Temperature controlled fan Circuit diagram

This is temperature controlled fan circuit.When you use this circuit you don't want to turn the switches when the heat goes up.It is controlled automatically.




Note

# R1 =thermistor (15K @ 20°C ,N.T.C thermistor )

# C1 must be rated 25V.

# This circuit is operated with 12V power supply

FM Transmitter circuit diagram (50M)

This is FM transmitter circuit diagram.By using this circuit diagram you can send signals up to 50M.Here I have used 2N2222 Transistor.This circuit can be operated with 3V



Note

# L1= 5 turns of 24AWG wire on a 1cm plastic former.

# Antenna can be a 25cm long 18AWG wire.

12V Flashing Lamp Circuit Diagram

This is good news for vehical lovers.This is 12V Flashing lamp circuit.Yuo can use this circuit for your vehical.Here I have used IC LM317T.




Note

# Build this on a PCB

# This circuit operates with 12V power supply.

FM Radio Jammer circuit diagram

This is FM radio jammer circuit diagram.This is not legal device in many countries.So dont misuse this.we dont get any response of it.




Note

# This circuit operates with 9V

# L1 make 6 turns of 16AWG enamelled copper wire on a 9mm plastic former.

Simple Intercom Circuit diagram

This is a intercom circuit diagram.you can use this for your office or for your working place.Acoording to the changes of s1a and s1b You can use this as the reciever and the mic



Note

# Use screen wires Between these two circuits