Lecturer, department of physics and electronics, adekunleajasin university, akungbaakoko, ondo state, nigeria abstract a sound activated switch is a device that utilizes sound to control appliances. This circuit toggles the leds each and every time it detects a clap or tap or short whistle. This circuit is constructed using basic electroniccomponents like resistors, transistors, relay, transformer,capacitors. The clap switch circuit is yet another simple and cool project. Output of flipflop, which is in the low current form is unable to drive relay so we have used a current amplifier circuit by. Clap switch circuit for devices circuit working and applications. Think a latching relay operates when a momentary pulse is sent to the coil instead of a constant signal, so therefore saving battery.
The circuit will switch on the relay and an led when a loud sound is detected by the microphone for example clap, whistle or any other loud sound. High sensitive clap operated switch circuit without microcontroller. Clap switch using transistor electronic projects, power. The clapoperated circuit is a circuit which operates by clapping from a remote point. Uses a photo resistor to determine whether a room is bright, average or dark.
Before you make a circuit glowing 220v bulb, learn about relay, otherwise, it can be dangerous. Share on tumblr this clap switch circuit using ic 555 is a hobby circuit, makes led to glow while you clap or make louder noise. Although its name is clap switch, but it can be turned on by any sound of approximately same pitch of clap sound. The negative or gnd pin of the electret microphone is the pin that connects to the body of the microphone. Motorola mc68hc908qy4 mcu remote observation station schematic circuit. Clap switch with latching relay page 2 all about circuits. Working and schematic diagram of clap swith circuit. The clap switch circuit shown can on and off electronic appliances with. In the first circuit, i will control a single relay using clap switch.
Clap switch circuit diagram using ic 555 circuit digest. Clap switch with latching relay all about circuits. Dec 31, 2012 the pulse of clap which is a trigger for flipflop which makes changes to the outputwhich is complementary reverse. Inside a flipflop circuit, at any given time just one transistor triggers while the other remains cutoff and once it receives a trigger pulse coming from external source subsequently 1st transistor gets switched off and 2nd transistor is activated, therefore output of. Only problem is my circuit sends a constant signal to the relay when clap. This clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. Pdf clap switch a mini project report submitted in the. Clap switch using transistor circuit wiring diagrams. The output will goes to high 1 for a certain time and it will come back to the low state. Clap switch working consider the above circuit into 2 parts, the job of the left part of this circuit is to give the low signal to the right part, which has 555 timer. A sound activated switch is a device that utilizes sound to control. Clap switch is an interesting hobby circuit which turns on the lights with a clap sound. Therefore a stepdown transformer 12v300ma is employed. In a flipflop circuit, at a time only one transistor conduct and other cutoff and when it gets a trigger pulse from outside source then first transistor is cutoff and 2nd transistor conducts, thus output of transistor is either logic0 or logic1 and it remains in.
This paper presents the design of a clap activated switch device that will serve. Upon a single clap, the clap switch circuit should respond but should hold the relay on and the load should operate without interruption. This dark activated switch can trigger a relay to operate an ac lamp at sunset. This circuit can switch on and off a light, a fan or a radio etc by the sound of a clap. Friends in this video i will show you how to make a clap switch circuitsimple clap onoff switch using 4017 iccontrol light fan by clapfriends it is a very simple circuit and you can easily. The pulse of clap, which is a trigger for flipflop makes changes to the output state that is complementary reverse. This is a project of a sensitive clap switch circuit. Pdf this paper presents the design of a clap activated switch device that will serve well in. When you clap once, the relay is activated and the light or any load is turned on. If you want to design a switch circuit to turn on and turn off without reach a physical switch then try this simple clap switch circuit with relay, this circuit is designed with timer ic 555, dual d flip flop ic 7474 and a electromagnetic relay.
The clapoperated circuit is a circuit which operates by clapping from a. If the relay is not working or not performing the activity then you are using wrong voltage coil. Now, by clapping again, the load must not go off rather we will manually shut the load off using a switch against the load. An example of a sound activated switch is the one that works by mere clapping. Picture of our burglar alarm project this circuit uses a popular timer i. This is a simple electronic project and mostly used to turn on and off ac appliances with the help of sound.
This can allow you to completely isolate one circuit from another. Jul 15, 2018 friends in this video i will show you how to make a clap switch circuit simple clap onoff switch using 4017 iccontrol light fan by clap friends it is a very simple circuit and you can easily. While there are numerous means of generating the latching function, the latching relay greatly simplifies the circuit and provides a relay contact interface for driving a 115 or 230vac load such as a light bulb. To make the same circuit as mentioned above without ic 555 timer, we will have to use the following basic electronic components and devices. We are going to use a mic and uno to sense the sound and trigger a response.
While traveling recently, my family had trouble powering the 5 smartphones, 2 tablets, and 2 laptops while driving. Handheld simple magnetized demagnetized device schematic circuit diagram april 19, 2020. It is known as clap switch, because the condenser mic which. The lm358 will work at 5v, but the output does not swing that close to the rails. In a flipflop circuit, at a time only one transistor conduct and other cutoff and when it gets a trigger pulse from outside source then first transistor is cutoff and 2nd transistor conducts, thus output of transistor is either logic0 or logic1 and it remains in one state 0 or 1. Pic16f877 4 layer elevator control circuit schematic circuit diagram april 17, 2020.
Apr 06, 2016 clap switch breadboard layout and circuit diagram. Dec 20, 2015 this clap switch circuit using ic 555 is a hobby circuit, makes led to glow while you clap or make louder noise. It produces a small electrical signal which is amplified by the succeeding transistor stage. To indicate the states of the different appliances, different colors of led is also connected with the circuit. However i think the relay coil will shorten battery life, so would like to know how could i incorporate a latching relay into the circuit. Clap pattern based electrical appliance control irjet. The main component of this clap switch circuit is the electric condenser mic, which has been used as a sound sensor. Transistor t1 is used as the preamplifier and the rest are used for driving the relays. This construction will give mono pulse when trigger received from mic, the duration of pulse time varies respect to r2 and c2 connected with ic555. Control led by clap using arduino and sound sensor.
This circuit is built around timer ic 555 ic1, cmos ic 74ls93 ic2 and five bc547 npn transistors t1, t2, t3, t4 and t5. A resistor with value between 220 ohm and 470 ohm is used in series with the led r3 in the circuit diagram. Mar 21, 2018 simple clap switch circuit diagram 220v using relay. Clap switch has the ability to turn onoff any electrical component or circuit by the clap sound. How to make a clapclap on clapclap off switch circuit. This circuit is constructed using basic electronic components like resistors, transistors, relay, transformer, capacitors. In this project we are going to make clapper circuit using the concept of adc analog to digital conversion in arduino uno. Regarding your second question, i have already given the schematic on the same page, see below the clap switch page, there is another schematic with the name, clap switch glowing 220v bulb. It shows this using 3 leds andor the serial monitor. A clap on clap off switch is an interesting concept that could be used in home automation.
A clap switch circuit is always come in the category of very interesting electronic circuits, it is also a good learning project for electronic beginners. If you wish to on and off the device without a penny shifting from your space then this circuit is helpful for you. We have also presented a clap switch circuit before which is able to activate a relay for a short timer period after a sound produced near microphone, the circuit was using two transistors and an ne 555 timer ic. Condenser mic basically converts sound energy into electrical energy, that in turns used to trigger 555 timer ic, through a transistor. Output of flipflop which is in the low current form isunable to drive relay directly so we have used a current amplifier circuit by using q4 which isa common emitter circuit. Aug 30, 2018 clap switch circuit using 555 and 4017. Output of flipflop, which is in the low current form is unable to drive relay so we have used a current amplifier circuit by using q4 that is a common emitter circuit. The circuit is divided in two stages the first stage is built with two 2n4401 transistors and second is built with 555 timer ic. The second 10uf is charged through the 5k6 and 33k and each time a sound is recognized by electret microphone, the negative excursion of the waveform takes the positive end of the.
Design and construction of clap activated switch international. Here the simple circuit diagram of clap switch built using transistors. Build the circuit as shown in the breadboard layout and circuit diagram below. Circuit easy easy to learn and make electronic projects. Since, the positive input is connected to the internal reference voltage source, gp1 pin can be used as a. Clap switch is a basic electronics miniproject, made with the help of the basic components. Watch the video of clap switch circuit diagram project circuit description as shown in the circuit a very few number of parts is used including relay, transformer, condenser microphone, few transistor, a lamp etc.
It is known as clap switch because the condenser mic. Nov 22, 2011 this circuit is constructed using basic electroniccomponents like resistors, transistors, relay, transformer,capacitors. In the above table, logic 1 shows that the corresponding transistor carries out to energize the equivalent relay and the device linked with it activated. How to make clap switch circuit using 555 timer ic homemade. How to make clap switch circuitsimple clap onoff switch. We have previously built clap switch and clap on clap off. The main component of the circuit is the electric condenser mic. Although its name is clap switch, but it can be turned on by any sound of about same pitch of clap sound.
Clap on clap off switch circuit diagram using 555 timer ic. Simple clap switch circuit diagram using relay clap on. Control pin 5 of 555 timer ic should be connected to. A led is used in parallel with the relay for visual indication. For better performance, a battery is recommended for power supply.
Shadow sensors are widely used to detect the movement of a person. Design and construction of clap activated switch tomiwa a. Two transistors cross connected as a bistable multivibrator. The fundamental concept of the clap switch is microphone received the sound of the clap or any other sound, the circuit will be activated this kind of system has been helpful of the day to day. The electret microphone picks up the sound of your claps, coughs, and the sound of that book knocked off the table.
This is a simple clap switch circuit with high sensitivity. You can switch on and switch off the appliance at your room by simple clapping or by a sound. The only unusual component is the single coil latching relay. It consists of condenser mic to pick sound of the clap and convert from sound energy to electrical energy which is then used to trigger 555 timer output where led is connected. Simple clap switch circuit diagram using relay clap on clap. Dec 18, 2010 regarding your second question, i have already given the schematic on the same page, see below the clap switch page, there is another schematic with the name, clap switch glowing 220v bulb. Dark activated relay circuit d mohankumar 02192010. We will use two basic clap switch circuit diagrams i. Check out other clap switch and sound operated circuit posted in. We can modify this circuit using relay to control the electronic devices 120220v ac. Clap switch a mini project report submitted in the partial fulfillment of degree of bachelor of technology. How to use relay example of basic schematic circuit diagram.
Abstract in this paper, we present idea to control. This circuit can switch on and off light a fan or a radio etc. At each output point you need to attach the individual relay. This is the circuit of a very sensitive clap switch. You can even use a separate power supply to control the relay. It works as a switch which makes devices on and off by making a clap sound. Kty10 lm2903 temperature sensor relay control schematic circuit diagram april 18, 2020. Resultwe constructed the circuit as per circuit diagram. Simple clap switch circuit using transistors tested. Clap switch circuit for devices summary of clap switch circuit.
The time for which the output stays high can be controlled by a suitable rc values. Pdf design of a clap activated switch researchgate. In this clap switch, circuit clap is acting as a pulse for the flipflop circuit. You can use this circuit concept in many ways to activate sound based project. This is a project on clap sw itch which can switch onoff any electrical circuit by the sound of the clap. Mostly 12 volt coil is used in relays, but few relays have 5 volt coil. Nov 09, 2014 the pulse of clap, which is a trigger for flipflop makes changes to the output state that is complementary reverse. Inside a flipflop circuit, at any given time just one transistor triggers while the other remains cutoff and once it receives a trigger pulse coming from external source subsequently 1st transistor gets switched off and 2nd transistor is activated, therefore. C 555 is connected as comparator with pin 6 connected with positive supply, the output goes high1 when the trigger pin 2 is at lower than level of the supply voltage, conversely the output goes low0 when it is above. Design of a clap activated switch leonardo journal of sciences. One more plus point of this circuit is that there is no fear of the electrical shocks as you are not required to touch any of the mechanical switches physically. It consists of condenser mic to pick sound of the clap and convert from sound energy to electrical energy which is then used to trigger 555 timer output where led is connect. We already seen the right part of the circuit in how to get the monostable output using 555 timer. Simple clap switch circuit diagram 220v using relay.
Jan 05, 2019 if you want to design a switch circuit to turn on and turn off without reach a physical switch then try this simple clap switch circuit with relay, this circuit is designed with timer ic 555, dual d flip flop ic 7474 and a electromagnetic relay. Browse through a total of 32 ic 741 projects circuits. By default the output of this circuit will be low 0. When you clap for the second time, the relay is deactivated and the light is turned off.