Browse through a total of 32 ic 741 projects circuits. 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. Apr 28, 2017 this clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. Simple clap switch circuit diagram using relay clap on clap. Along with some of the other components, this circuit is mainly based on the two ics i. This circuit has been designed to respond only to two hand claps which occur in relatively quick succession and to ignore one hand clap or even continuous clapping, as well as most other sounds which normally have lower frequency content than a hand clap. This 555 timer clap switch circuit electronic project is designed using some common electronic parts. The circuit presented here clap switch consists of silicon transistor and is divided in three main section i. The electret microphone picks up the sound of your claps, coughs, and the sound of that book knocked off the table. How to make clap switch circuitsimple clap onoff switch.
The clapping sound is converted into electrical energy by the microphone and amplified by transistor t1. Now, we are going to deal another circuit named clap switch circuit for devices. This is another clap on off circuit diagram using 555 timer and 7474 ic. Clap switch circuit for devices circuit working and applications. Control led by clap using arduino and sound sensor. Clap switch is a basic electronics miniproject, made with the help of the basic components. Signal from microphone is amplified by transistors t1, t2 and t3. When capacitor value is changed from 100mf to 10mf the led ontime is.
High sensitive clap operated switch circuit without microcontroller. 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. This is a project on clap sw itch which can switch onoff any electrical circuit by the sound of the clap. Although its name is clap switch, but it can be turned on by any sound of about same pitch of clap sound. When clap the load is switch on and when again clapped then load is switch off. This 555 timer clap switch circuit electronic project operates from a distance of up to 10 meters from the microphone. Clap switch circuit for devices summary of clap switch circuit. Set vr1 to switch off the relay above a particular voltage say 260volt input. Clap switch circuit diagram using 555 and 74ls74 clap on. This is a sound sensitive circuit, when sound is produced it is changed into electric energy through condenser mic and led turns on.
This clap operated on off switch circuit is useful to on off any appliance. All you need is to just clap or you can puff in front of the microphone and after that, the device attached to the microphone becomes on or off. Working principle of clap switch circuit is based on the above discussion. 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. Clap switch has the ability to turn onoff any electrical component or circuit by the clap sound.
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. A resistor with value between 220 ohm and 470 ohm is used in series with the led r3 in the circuit diagram. Working and schematic diagram of clap swith circuit. Clap based fan switching system allows for switching fan on and off by detecting user clap, get this mini project kit with circuit diagram at nevonprojects. The main component of the circuit is the electric condenser mic. Before you make a circuit glowing 220v bulb, learn about relay, otherwise, it can be dangerous. If you wish to on and off the device without a penny shifting from your space then this circuit is helpful for you. 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.
How to make a clapclap on clapclap off switch circuit. Build the circuit as shown in the breadboard layout and circuit diagram below. Two transistors cross connected as a bistable multivibrator change state at each signal. 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. The mic is biased in to the circuit in such a way that it doesnt picks up noise signals from the. Initially the transistor is in off state because there is. 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.
You can use this circuit concept in many ways to activate sound based project. In this clap switch, circuit clap is acting as a pulse for the flipflop circuit. It is known as clap switch, because the condenser mic which. When you clap once, the relay is activated and the light or any load is turned on. Design and construction of clap activated switch international.
It works as a switch which makes devices on and off by making a clap sound. You can connect any dc or ac appliance with the output of the relay to make it. Nov 22, 2011 introduction this is a project on clap switch which can switchonoff any electrical circuit by the sound of the clap. This clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. A clap on clap off switch is an interesting concept that could be used in home automation. It has a relay output that can be used to turn external devices onoff. The negative or gnd pin of the electret microphone is the pin that connects to the body of the microphone. The complete circuit diagram of this simple clap switch project is shown below. Pdf design of a clap activated switch researchgate. The microphone changes sound wave in to electrical.
I hope you understood, i want a one way clap switch circuit which only will trigger the load on. After that period the fan turns off and waits for the next clap from the user. Clap switch a mini project report submitted in the partial fulfillment of degree of bachelor of technology. Audio trigger stage is build around microphone and transistor t 1. 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 clap activated switching device can basically be described as a low frequency.
Here the simple circuit diagram of clap switch built using transistors. A clap switch circuit is a sound sensitive circuit. Led turns on sound signal and turns off automatically after few seconds, the led ontime can be varied by changing the value of 100mf capacitor. Clap switch circuit rookie electronics electronics. Clap switch circuit for devices circuit working and. 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. Pdf analysing efficiency and effectiveness of clap switch. When you clap for the second time, the relay is deactivated and the light is turned off. The circuit is divided in two stages the first stage is built with two 2n4401 transistors and second is built with 555 timer ic. We are going to use a mic and uno to sense the sound and trigger a response. Sensitive clap switch circuit d mohankumar 04242010. We will use two basic clap switch circuit diagrams i. Clap switch using transistor electronic projects, power.
Pdf this paper presents the design of a clap activated switch device that will serve. 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. 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. Since, the positive input is connected to the internal reference voltage source, gp1 pin can be used as a.
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. Apr 06, 2016 clap switch breadboard layout and circuit diagram. By default the output of this circuit will be low 0. The clapoperated circuit is a circuit which operates by clapping from a remote point. 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. Shadow sensors are widely used to detect the movement of a person. In this project we are going to make clapper circuit using the concept of adc analog to digital conversion in arduino uno.
Clap switch circuit diagram using ic 555 circuit digest. Dec 31, 2012 resultwe constructed the circuit as per circuit diagram. While traveling recently, my family had trouble powering the 5 smartphones, 2 tablets, and 2 laptops while driving. Mar 23, 2018 this is another clap on off circuit diagram using 555 timer and 7474 ic. This circuit toggles the leds each and every time it detects a clap or tap or short whistle. The output will goes to high 1 for a certain time and it will come back to the low state. Ic 555 timer is a one of the far and wide used ic in the field of electronics and is employed in different varieties of electronic circuits for its properties like. You can see the circuits and connections in the above schematic diagram of clap switch. The time for which the output stays high can be controlled by a suitable rc values. Ne 555 timer ic is an essential electronic component of. This is a simple clap switch circuit with high sensitivity. We have previously built clap switch and clap on clap off switch, using 555 timer ic. Uses a photo resistor to determine whether a room is bright, average or dark. We have already seen the circuit diagram, working and applications of 9 way clap switch circuit.
Resultwe constructed the circuit as per circuit diagram. On clapping there will be a peak signal at the mic which is much higher than normal, this signal is fed to the amplifier, though a high pass filter. Set vr3 for minimum voltage to switch on the relay say 195 volt input. Three phase auto changer circuit electronic circuits and. In the first circuit, i will control a single relay using clap switch. Pdf clap switch a mini project report submitted in the.
One small request, could you please link me to the page of a particular clap switch circuit where, 1. 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. Olokede, seyi stephen 49 circuit is expected to respond to two claps only when it is received within three seconds to energize a relay which will make connection with an external circuit. Mar 11, 2017 in this clap switch, circuit clap is acting as a pulse for the flipflop circuit. The only unusual component is the single coil latching relay. This is a project of a sensitive clap switch circuit. This circuit wastes power and does not work properly if the powersupply voltage is not substantially more than the sum of the leds forward voltages. The clap switch circuit shown can on and off electronic appliances with. 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. While there are numerous means of generating the latching function, the latching relay greatly simplifies the circuit and provides a relay contact. F 40 volts good make in parallel with relay for chatter free operation. It is known as clap switch because the condenser mic.
The circuit allows you to operate your lighting or any circuit device which use 24v 3a maximum supply, simply by clapping your hands. Simple clap switch circuit diagram 220v using relay. 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. Transistor t1 is used as the preamplifier and the rest are used for driving the relays. Simple clap switch circuit using transistors tested. Switch circuits combination locks electronics tutorial. Simple clap switch circuit diagram using relay clap on. Mar 21, 2018 simple clap switch circuit diagram 220v using relay. Clap switch is an interesting hobby circuit which turns on the lights with a clap sound. Aug 30, 2018 clap switch circuit using 555 and 4017. Condenser mic basically converts sound energy into electrical energy.
The main component of this clap switch circuit is the electric condenser mic, which has been used as a sound sensor. The sound of clap is received by a small microphone that is shown biased by resistor r1 in the circuit. Although its name is clap switch, but it can be turned on by any sound of approximately same pitch of clap sound. Clap operated switch a small condenser microphone is connected at the base of transistor t1, which is biased from resistor r1 10 kiloohms. Clap switch using transistor circuit wiring diagrams. You can switch on and switch off the appliance at your room by simple clapping or by a sound. This is the circuit of a very sensitive clap switch. 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. The basic idea of clap switch is that the electricmicrophone picks up the sound of your claps, coughs, and thesound of that book knocked off the table. Thus by generating clap sound, the output get reversed. This circuit is built around timer ic 555 ic1, cmos ic 74ls93 ic2 and five bc547 npn transistors t1, t2, t3, t4 and t5. The figure below shows a project schematic of a clap switch circuit.
Clap on clap off switch circuit diagram using 555 timer ic. It produces a small electrical signal which is amplified by the succeeding transistor stage. I will present two circuits for clap switches, both of these circuits will be based on 555 ic and 4017 ic. It shows this using 3 leds andor the serial monitor. This circuit is good and ideal for disabled or elderly people.
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