ELECTRONICS EVERYWHERE: 2012

Circuit diagrams of electronic hobby circuits

These are some circuits of infrared based remote controls and alarms which consists of an IR transmitter and an IR receiver which are built around IR LED and IR sensor modules and some associated components.

Modulated IR ray transmitter.

Automatic gate opener with street lights and musical bell.

IR based any remote operated bulb glowing remote control.

IR based intruder alarm.

IR based AC device controller.

Remote control of home appliances using any TV remote.

Electronic shooting game using infrared rays

Gun in which IR transmitters are placed.

Target on which the receiving sensor is placed.

Circuit inside the gun.

Circuit after the IR sensor which drives outputs.

In this shooting game one can improve their accuracy and speed very simply.We have to point the gun towards the target and press the switch.IR rays from the gun strikes on the target IR sensor module and a confirmation LED just lits and an audio indication is also heard along with it.This circuits use only a few components which are easily available in local market.

Sound converted to invisible radiations


Modulated IR rays to sound

ELECTRONICS EVERYWHERE ::Assembled circuits...............

Electronics is present everywhere . Anywhere you looks there we can see influence of electronics.From kitchen of common to the most advanced artificial satellites.Keep knowing some uses and applications of electronics...........

Electronic emergency light

Electronics in automatic railway traffic control lights.Signal lights on basis of the presence of train in the track.
(Here hand represents train)

This electronic emergency light is built using LEDs which have higher energy saving capability, have higher brightness,have long period of glowing and using only a little power. This LED is known as the lamb of future.


Assembled radio receiver

These are the circuits of fm radio which built around CXA 1619 S IC which is a versatile and accurate IC for FM recieving.This circuits can also be used for remote control as well as long range remote calling bell.So these circuits are very useful and have many interesting usages.

Inner part of a radio built on sony cxa 1619s

Electronic radio transmitter unit

These electronic radio transmitter transmits the signal &modulated informations of the data that is to be transmitted.Through this instrument all the data's such as songs,conversations,other informations ...

are transmitted and the reciever seen above recieves the data and converts into appropriate forms.

These LED flashers flashes along with the music from the music player integrated with the circuit .This is an ideal circuit for analyzing the output levels of the music view these videos for understanding its function.............

Electronic oscillator

Electronic oscillator is a device that oscillates in a specific frequency whose out put may be visual or auditory.Oscillator can be made of capacitor - inductor pair,resistor - capacitor pair or ICs.

Electronic two stage FM transmitter