Nov 25, 2012 a clap switch is a fun project for beginners. Please practice handwashing and social distancing, and. Now, we are going to deal another circuit named clap switch circuit for devices. Clap switch circuit using bc547 transistor youtube. When i clap it works but after few seconds it doesnt work. Clap on clap off switch circuit diagram using 555 timer ic.
By default monostable multivibrator will be in its stable state, but when triggered it will switch to unstable state quasistable state for a time period determined by the rc time constant in the circuit. These signals are then given to the transistor t1 base which in return trigger the ic1 pin2. The output pin goes high turning on the led for some time. The main application of the clap switch circuits described below is for controlling home appliances. Using strong pcb design software will enable you to get your devices working. Before you make a circuit glowing 220v bulb, learn about relay, otherwise, it can be dangerous. Simple clap switch circuit diagram using relay clap on clap. Clap switch circuit diagram using ic 555 circuit digest.
In this transistor tutorial, we will learn about the working of a transistor as a switch. In the circuit, i will control a single relay using clap switch. Simple clap switch circuit using transistor led projects, electrical projects, simple. Examples include switching high voltage in manually controlled applications. Will the circuit refer to the link work as a clap switch. This working of this circuit isbased on amplifying nature of the transistor, switching nature of transistor, relay as anelectronic 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. It is necessary to make these three modules in order to make a clap switch. Whenever we touch the conductive plates of the touch sensor, the 555 timer is triggered. Basic principle the basic principle of this clap switch circuit is that it. High amplitude sound signal in front of the condenser mic, turns on the transistor bc 548.
In the above explanations we learned a simple clap activated switch circuit which incorporated an ic for implementing the desired onoff toggling actions. How to make a clapclap on clapclap off switch circuit. The article presents a comprehensive discussion regarding these tiny electronic devices in a very lucid style, explaining bc547 datasheet, their operating principle and how to implement bc547 and the associated parts into. Clap switch circuit on breadboard sound triggered led. I rebuilt the circuit from the 555 timer down, and everything from the 555 timer works. Working of transistor as a switch npn and pnp transistors. The collector of the third transistor could possibly be taken to a buffer transistor to control a relay or other device. It contains four master slave flop and also contain divide by two and divide by five counter. Hi friends in this video im going to show you how to make a clap switch. 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.
This is a simple clap switch circuit with high sensitivity. The above action switches the load accordingly either to on or off position. Remote access to electrical devices are makes us comfortable and if you can control electric device with clap then it makes you very joyful and here we have prototype a simple clap on clap off switch using 555 timer and this circuit can help us to control any electric device, here for an example we have taken electric bulb. Classical project for turning onoff appliances by a sound of clap. Hello friends, today in this video ive shown how to make a simple clap switch using only transistor. We have used a microphone which converts sound wave into an electric signal. In short, a transistor conducts current across the collectoremitter path only when a voltage is applied to the base. Pdf clap switch a mini project report submitted in the.
The condition provides more negative bias to the base of the bc557 transistor and switches on the led assembly, indicating an undesirable voltage condition of the. Condenser mic basically converts sound energy into electrical energy, that in turns used to trigger 555 timer ic, through a transistor. This circuit toggles the leds each and every time it detects a clap or tap or short whistle. I have been trying to build the clap switch circuit using the 555 timer chip but i. It is known as clap switch, because the condenser mic which. Here the 555 ic operates in monostable multivibrator mode. Clap switch using 3 different modules buildcircuit. On first clap, the circuit switches on and on another clap, it switches off. The above 12v clap triggered switch circuit using ic 741 was successfully tried and tested by mr.
Im using two 3904 transistor instead of the bc547 and im using a 9volt battery. You can use this circuit concept in many ways to activate sound based project. 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. However, for that, the resistor and capacitor of the monostable mode circuit should be set in such a way that it short pulse of 1 seconds only. This working of this circuit is based on amplifying nature of the transistor, switching.
We have already seen the circuit diagram, working and applications of 9 way clap switch circuit. Clap switch circuit for devices circuit working and applications. This is a simple clap switch circuit diagram project. Transistor bc547 is probably the most elementary of the available electronic active components and yet becomes the basic, vital building block in most electronic circuits.
How to make simple electronic circuits using transistor bc547. We have previously built clap switch and clap on clap off switch, using 555 timer ic. Monostable multivibrator using transistors circuit diagram. Flipflop circuit is made by using two transistors, q2 and q3. We can also remove leds and place a fan or any other electric component on the output in order to get the desired result. It is known as clap switch because the condenser mic. You can also modify this circuit into a clap on clap off switch by coupling the primary output of this circuit to 4017 ic. Using these circuits, you can control electrical appliances. Aug 30, 2018 we have already seen the circuit diagram, working and applications of 9 way clap switch circuit.
The collector voltage of bc 548 is connected to the trigger pin of 555. Dec 30, 2015 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. Jan 12, 2020 clap switch circuit using bc547 transistor youtube stay safe and healthy. Pcb layout tips for a clap switch circuit pcb design blog. 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. 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. The main component of this clap switch circuit is the electric condenser mic, which has been used as a sound sensor. After a long experiment here we design and verified a clap switch circuit using few transistor. Apr 28, 2017 in this project we are going to make clapper circuit using the concept of adc analog to digital conversion in arduino uno. When no base voltage is present, the switch is off. This is another clap on off circuit diagram using 555 timer and 7474 ic. By adhering to pcb layout principles and following guidelines for clap switch design, you can easily build a reliable clap. Monostable multivibrator or oneshot multivibrator has only one stable state.
This project read more about clap cwitch using transister. Circuit diagram, description of clap switch and other. Simple touch sensitive switch circuit using 555 timer. Hence we are using bistable multivibrator configuration of the transistor to store clap signal. Clap switch a mini project report submitted in the partial fulfillment of degree of bachelor of technology. Jan 17, 2019 today we are going to make a simple clap switch circuit. Dec 20, 2015 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. The sound of clap will be captured by a tiny mic which is indicated through a biasing resistor r1 within the circuit. This paper presents the design of a clap activated switch device that will serve well in different phonocontrolled applications, providing inexpensive key and at the same time flee from false. This circuit can switch on and off light a fan or a radio etc. One of the most common uses for transistors in an electronic circuit is as simple switches. Clap switch circuit for devices circuit working and. Simple clap switch circuit using transistor youtube circuito.
It switches on and off electrical appliances with a sound of clapping hands. Simple clap switch circuit using transistor c945 youtube. A transistor can be operated in three modes, active region, saturation region and cutoff region. I am making a clap switch activated relay circuit in which the bulb will glow on first clap and will shut off on the second clap. This can also be utilized as night bed switch and as a bugler alarm. We are going to use a mic and uno to sense the sound and trigger a response.
When clap the load is switch on and when again clapped then load is switch off. It can be used to turn on and off the led or lamp simply, by clapping your hands. Using a toggle switch in the clap switch would offer two stable states for the circuit. Because it starts to turn on, the transistor that was originally activated will get less turnon from its 100uf and 47k and thus the two switch over extremely quickly. Pdf design of a clap activated switch researchgate. Clap switch has the ability to turn onoff any electrical component or circuit by the clap sound. At the time when some one slap in front of the mic the sound signal is converted into the electrical signal by the condenser microphone. This can be attached with bulb, light, fan to switch off or on. The circuit can sense the sound of claps from a distance of 12 meters. Simple clap switch circuit using transistor youtube. You can switch on and switch off the appliance at your room by simple clapping or by a sound. Sep 30, 2019 hi friends in this video im going to show you how to make a clap switch. Sep 26, 2019 hello friends, today in this video ive shown how to make a simple clap switch using only transistor. It is known as clap switch, because the condenser mic which will be used in this project will have an ability to take the sound having same pitch as the clap sound as the input.
Here the simple circuit diagram of clap switch built using transistors. Aug 16, 2015 monostable multivibrator or oneshot multivibrator has only one stable state. Clap switch circuit diagram using 555 and 74ls74 clap on. The sound of your claps is picked up using a condenser microphone. Will make a tutorial on this soon components required. In this clap switch we use three different modules given below. Here we are using electric condenser mic for sensing the sound, transistor to trigger the 555 timer ic and 555 ic to turn. You dont need a transistor and its associated circuitry to turn on a light bulb. 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. Today we will discuss about making a simple clap switch that operates when it detects two clapping sounds in a row. Mar 21, 2018 simple clap switch circuit diagram 220v using relay.
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. Ne555 timer ic which is configured in monostable mode 2. The circuit is working but in order to make it work i have to clap very hard as well as close to the condenser mic which makes it unsuitable to use for any application. Mar 23, 2018 this is another clap on off circuit diagram using 555 timer and 7474 ic. A clap switch circuit can turn onoff any electrical component by the sound of a clap. Simple clap switch circuit using transistors tested. As one of the significant semiconductor devices, transistor has found use in enormous electronic applications.
Clap switch using transistor electronic projects, power. A few of the interesting and useful hobby electronic circuit diagrams already published in this blog have been selected and compiled here for quick reference and understanding. 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. Today we are going to make a simple clap switch circuit. 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. The present design uses a different principle and utilizes only transistors for the above triggering actions. Simple clap switch circuit diagram using relay clap on. Switching and amplification are the two areas of applications of transistors and transistor as a switch is the basis for many digital circuits. It switches onoff electrical appliances through claps. Dec 31, 2012 this working of this circuit isbased on amplifying nature of the transistor, switching nature of transistor, relay as anelectronic switch. If the circuit uses the bjt transistor as a switch, then the biasing of the transistor, either npn or pnp is arranged to operate the transistor at the both sides of the iv characteristics curves shown below.
High sensitive clap operated switch circuit without microcontroller. Clap switch circuit using bc547 transistor youtube in. Today i am going to make a circuit of clapping switch with bc547 transistor. If you are a beginner electronics learner, and love to do new project experiment then this is a great circuit for you. How to use a transistor as a switch in different applications. Hello, for understanding the working of clap switch. Clap switch using transistor circuit wiring diagrams. Simple clap switch circuit diagram 220v using relay. This circuit can onoff a 220v electronic device like fan, lamp by the sound of clap. In some situations, a switch is a better choice because its so simple. The only unusual component is the single coil latching relay. Clap switch is a circuit with which we can turn onoff any electrical equipment. Designing a clap switch circuit is relatively simple as most of the components are readily available within circuitstudios integrated. Clap switch not working properly all about circuits.
A classic example circuit using an pnp device, where the withdrawing or falling positive voltage level at some point of time becomes too low to keep the transistor reverse biased. It can be triggered with a low voltage at the 2nd pin. I will present two circuits for clap switches, both of these circuits will be based on 555 ic and 4017 ic. Although, the name of the circuit is clap switch it can be turned on by any sound which has pitch similar to a clap sound. Suggest fullbridge dcps with a regulator, add led for power, another led for output st. We already seen the right part of the circuit in how to get the monostable output using 555 timer. Clap switch is a basic electronics miniproject, made with the help of the basic components. 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. This electric signal from the microphone is then amplified by using a transistor q1 as shown in circuit diagram. This clap on clap off switch basically turns on or off the device, by using the clap sound, as switch. The following prototype images for the same were sent by mr. In this tutorial, we will learn how to make a clap switch circuit, using a 555 timer ic. Basic principle the basic principle of this clap switch circuit is that it converts sound signal intoelectrical energy.