SlideShare a Scribd company logo
MUSIC BELL
CIRCUIT
CIRCUIT DIAGRAM
CIRCUIT ON PLY BOARD
PRINCIPLE OF OPERATION
 This circuits uses very few component and gives
melody sound. It uses 3 terminal IC UM66 and can
be build small enough to be placed inside a
greeting card and operated off a single 3V flat
button cell.
There is not much to the circuit. The UM66 is
connected to its supply and its output fed to a
transistor for amplification. Any common speaker
can be used or a “flat” piezoelectric tweeter like the
one found in alarm wrist watches. If you use the
piezo , then it can be connected directly between
the output pin 1 and ground pin 3 without the
transistor.
 The UM66 looks like a transistor with 3 terminals.
It is complete miniature tone generator with a
tune. Now they come with wide variety of
different tunes.
For amplification we have used a NPN transistor
which is BC548. Here BC548 makes a common
emitter circuit. For limiting the base current we
have used a resistance of 220 Ohms so that
transistor will not get damaged by excess
current.
CIRCUIT ON BREADBOARD
Thank You

More Related Content

What's hot

Transistor
TransistorTransistor
Transistor
Unsa Shakir
 
555 Timer Ic
555 Timer Ic555 Timer Ic
555 Timer Ic
Vaibhav Lone
 
Transistor as an amplifier
Transistor as an amplifierTransistor as an amplifier
Transistor as an amplifier
Anshu Kumar
 
Op amp basics
Op amp basicsOp amp basics
Op amp basics
anju_karsh
 
Silicon control rectifier
Silicon control rectifierSilicon control rectifier
Silicon control rectifier
Mozammel Hoque Parvez
 
Feedback amplifiers
Feedback amplifiersFeedback amplifiers
Feedback amplifiers
ForwardBlog Enewzletter
 
ppt on IC [Integrated Circuit]
ppt on IC [Integrated Circuit]ppt on IC [Integrated Circuit]
ppt on IC [Integrated Circuit]
Riddhi Patel
 
Voltage Regulators ppt
Voltage Regulators pptVoltage Regulators ppt
Voltage Regulators ppt
Gurkirat Singh
 
COUNTERS(Synchronous & Asynchronous)
COUNTERS(Synchronous & Asynchronous)COUNTERS(Synchronous & Asynchronous)
COUNTERS(Synchronous & Asynchronous)
Sairam Adithya
 
555 timer ppt by vishnu
555 timer ppt by vishnu555 timer ppt by vishnu
555 timer ppt by vishnu
kundarapu vishnu
 
Clipper and clampers
Clipper and clampersClipper and clampers
Clipper and clampers
Akanksha arora
 
Amplitude modulation
Amplitude modulationAmplitude modulation
Amplitude modulation
Syed Zaid Irshad
 
Presentation on Op-amp by Sourabh kumar
Presentation on Op-amp by Sourabh kumarPresentation on Op-amp by Sourabh kumar
Presentation on Op-amp by Sourabh kumar
Sourabh Kumar
 
Clock Triggering
Clock TriggeringClock Triggering
Clock Triggering
AmshalEjaz1
 
Hartley oscillator circuit theory working and application
Hartley oscillator circuit theory working and applicationHartley oscillator circuit theory working and application
Hartley oscillator circuit theory working and application
elprocus
 
digita storage oscilloscope (dso)
digita storage oscilloscope (dso)digita storage oscilloscope (dso)
digita storage oscilloscope (dso)
Parind Patel
 
counters.ppt
counters.pptcounters.ppt
counters.ppt
NarendrakumarAnnadur
 
Applications of op amps
Applications of op ampsApplications of op amps
Applications of op amps
SARITHA REDDY
 
CMOS logic circuits
CMOS logic circuitsCMOS logic circuits
CMOS logic circuits
Mahesh_Naidu
 
IGBT circuit diagram.pptx
IGBT circuit diagram.pptxIGBT circuit diagram.pptx
IGBT circuit diagram.pptx
yogeshkute
 

What's hot (20)

Transistor
TransistorTransistor
Transistor
 
555 Timer Ic
555 Timer Ic555 Timer Ic
555 Timer Ic
 
Transistor as an amplifier
Transistor as an amplifierTransistor as an amplifier
Transistor as an amplifier
 
Op amp basics
Op amp basicsOp amp basics
Op amp basics
 
Silicon control rectifier
Silicon control rectifierSilicon control rectifier
Silicon control rectifier
 
Feedback amplifiers
Feedback amplifiersFeedback amplifiers
Feedback amplifiers
 
ppt on IC [Integrated Circuit]
ppt on IC [Integrated Circuit]ppt on IC [Integrated Circuit]
ppt on IC [Integrated Circuit]
 
Voltage Regulators ppt
Voltage Regulators pptVoltage Regulators ppt
Voltage Regulators ppt
 
COUNTERS(Synchronous & Asynchronous)
COUNTERS(Synchronous & Asynchronous)COUNTERS(Synchronous & Asynchronous)
COUNTERS(Synchronous & Asynchronous)
 
555 timer ppt by vishnu
555 timer ppt by vishnu555 timer ppt by vishnu
555 timer ppt by vishnu
 
Clipper and clampers
Clipper and clampersClipper and clampers
Clipper and clampers
 
Amplitude modulation
Amplitude modulationAmplitude modulation
Amplitude modulation
 
Presentation on Op-amp by Sourabh kumar
Presentation on Op-amp by Sourabh kumarPresentation on Op-amp by Sourabh kumar
Presentation on Op-amp by Sourabh kumar
 
Clock Triggering
Clock TriggeringClock Triggering
Clock Triggering
 
Hartley oscillator circuit theory working and application
Hartley oscillator circuit theory working and applicationHartley oscillator circuit theory working and application
Hartley oscillator circuit theory working and application
 
digita storage oscilloscope (dso)
digita storage oscilloscope (dso)digita storage oscilloscope (dso)
digita storage oscilloscope (dso)
 
counters.ppt
counters.pptcounters.ppt
counters.ppt
 
Applications of op amps
Applications of op ampsApplications of op amps
Applications of op amps
 
CMOS logic circuits
CMOS logic circuitsCMOS logic circuits
CMOS logic circuits
 
IGBT circuit diagram.pptx
IGBT circuit diagram.pptxIGBT circuit diagram.pptx
IGBT circuit diagram.pptx
 

Similar to Music bell circuit

Electrónica: construye tu propia radio FM
Electrónica: construye tu propia radio FMElectrónica: construye tu propia radio FM
Electrónica: construye tu propia radio FM
SANTIAGO PABLO ALBERTO
 
July 24, 2003
July 24, 2003July 24, 2003
July 24, 2003
Viorel Chirascu
 
Anti bag snatching alarm
Anti bag snatching alarmAnti bag snatching alarm
Anti bag snatching alarm
Saumya Tiwari
 
Simple Amp
Simple AmpSimple Amp
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker System
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker SystemWireless/Wired Automatic Switched Plasma Tweeter & Speaker System
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker System
IOSRJECE
 
sound to light system
sound to light  systemsound to light  system
sound to light system
Harish Kumawat
 
Transistor
TransistorTransistor
Transistor
Sanket1711
 
Basic electronics,lecture 4
Basic electronics,lecture 4Basic electronics,lecture 4
Basic electronics,lecture 4
Muhammad Ibrahim
 
Watch dog
Watch dogWatch dog
Watch dog
Saikiran Guduri
 
Transistors
TransistorsTransistors
Transistors
Edmund Merren
 
APPLICATIONS OF BJT IN CE AMPLIFIER.pptx
APPLICATIONS OF BJT IN CE AMPLIFIER.pptxAPPLICATIONS OF BJT IN CE AMPLIFIER.pptx
APPLICATIONS OF BJT IN CE AMPLIFIER.pptx
AvishekBhattacharjee18
 
Transistors
TransistorsTransistors
Transistors
escalon
 
Ki0232 3 stage fm transmitter
Ki0232 3 stage fm transmitterKi0232 3 stage fm transmitter
Ki0232 3 stage fm transmitter
Hoopeer Hoopeer
 
Detection of heart murmurs using phonocardiographic signals
Detection of heart murmurs using phonocardiographic signalsDetection of heart murmurs using phonocardiographic signals
Detection of heart murmurs using phonocardiographic signals
eSAT Journals
 
Design of a Low Noise Amplifier using 0.18μm CMOS technology
Design of a Low Noise Amplifier using 0.18μm CMOS technologyDesign of a Low Noise Amplifier using 0.18μm CMOS technology
Design of a Low Noise Amplifier using 0.18μm CMOS technology
theijes
 
A report on ultrasonic distance measurement
A report on ultrasonic distance measurementA report on ultrasonic distance measurement
A report on ultrasonic distance measurement
itfakash
 
MUSIC RHYTHM LED FLASH LIGHT CIRCUIT
MUSIC RHYTHM LED FLASH LIGHT CIRCUITMUSIC RHYTHM LED FLASH LIGHT CIRCUIT
MUSIC RHYTHM LED FLASH LIGHT CIRCUIT
Manthan Chopade
 
000739
000739000739
Automatic doorbell with object detection
Automatic doorbell with object detectionAutomatic doorbell with object detection
Automatic doorbell with object detection
Anurag Alaria
 
Common emitter amplifier by YEASIN NEWAJ
Common emitter amplifier by YEASIN NEWAJCommon emitter amplifier by YEASIN NEWAJ
Common emitter amplifier by YEASIN NEWAJ
YeasinNewaj
 

Similar to Music bell circuit (20)

Electrónica: construye tu propia radio FM
Electrónica: construye tu propia radio FMElectrónica: construye tu propia radio FM
Electrónica: construye tu propia radio FM
 
July 24, 2003
July 24, 2003July 24, 2003
July 24, 2003
 
Anti bag snatching alarm
Anti bag snatching alarmAnti bag snatching alarm
Anti bag snatching alarm
 
Simple Amp
Simple AmpSimple Amp
Simple Amp
 
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker System
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker SystemWireless/Wired Automatic Switched Plasma Tweeter & Speaker System
Wireless/Wired Automatic Switched Plasma Tweeter & Speaker System
 
sound to light system
sound to light  systemsound to light  system
sound to light system
 
Transistor
TransistorTransistor
Transistor
 
Basic electronics,lecture 4
Basic electronics,lecture 4Basic electronics,lecture 4
Basic electronics,lecture 4
 
Watch dog
Watch dogWatch dog
Watch dog
 
Transistors
TransistorsTransistors
Transistors
 
APPLICATIONS OF BJT IN CE AMPLIFIER.pptx
APPLICATIONS OF BJT IN CE AMPLIFIER.pptxAPPLICATIONS OF BJT IN CE AMPLIFIER.pptx
APPLICATIONS OF BJT IN CE AMPLIFIER.pptx
 
Transistors
TransistorsTransistors
Transistors
 
Ki0232 3 stage fm transmitter
Ki0232 3 stage fm transmitterKi0232 3 stage fm transmitter
Ki0232 3 stage fm transmitter
 
Detection of heart murmurs using phonocardiographic signals
Detection of heart murmurs using phonocardiographic signalsDetection of heart murmurs using phonocardiographic signals
Detection of heart murmurs using phonocardiographic signals
 
Design of a Low Noise Amplifier using 0.18μm CMOS technology
Design of a Low Noise Amplifier using 0.18μm CMOS technologyDesign of a Low Noise Amplifier using 0.18μm CMOS technology
Design of a Low Noise Amplifier using 0.18μm CMOS technology
 
A report on ultrasonic distance measurement
A report on ultrasonic distance measurementA report on ultrasonic distance measurement
A report on ultrasonic distance measurement
 
MUSIC RHYTHM LED FLASH LIGHT CIRCUIT
MUSIC RHYTHM LED FLASH LIGHT CIRCUITMUSIC RHYTHM LED FLASH LIGHT CIRCUIT
MUSIC RHYTHM LED FLASH LIGHT CIRCUIT
 
000739
000739000739
000739
 
Automatic doorbell with object detection
Automatic doorbell with object detectionAutomatic doorbell with object detection
Automatic doorbell with object detection
 
Common emitter amplifier by YEASIN NEWAJ
Common emitter amplifier by YEASIN NEWAJCommon emitter amplifier by YEASIN NEWAJ
Common emitter amplifier by YEASIN NEWAJ
 

More from Avijeet Negel

TCP/IP
TCP/IPTCP/IP
Upper OSI LAYER
Upper OSI LAYERUpper OSI LAYER
Upper OSI LAYER
Avijeet Negel
 
SONET/SDH
SONET/SDHSONET/SDH
SONET/SDH
Avijeet Negel
 
ATM
ATMATM
Frame Relay
Frame RelayFrame Relay
Frame Relay
Avijeet Negel
 
X.25
X.25X.25
Integrated Services Digital Network (ISDN)
Integrated Services Digital Network (ISDN)Integrated Services Digital Network (ISDN)
Integrated Services Digital Network (ISDN)
Avijeet Negel
 
Switching
SwitchingSwitching
Switching
Avijeet Negel
 
Point to Point Protocol
Point to Point ProtocolPoint to Point Protocol
Point to Point Protocol
Avijeet Negel
 
Networking and Networking Devices
Networking and Networking DevicesNetworking and Networking Devices
Networking and Networking Devices
Avijeet Negel
 
DATA Link Control
DATA Link ControlDATA Link Control
DATA Link Control
Avijeet Negel
 
CRC
CRCCRC
Error Detection and Correction
Error Detection and CorrectionError Detection and Correction
Error Detection and Correction
Avijeet Negel
 
Telephone Network
Telephone NetworkTelephone Network
Telephone Network
Avijeet Negel
 
Time Division Multiplexing
Time Division MultiplexingTime Division Multiplexing
Time Division Multiplexing
Avijeet Negel
 
MULTIPLEXING
MULTIPLEXINGMULTIPLEXING
MULTIPLEXING
Avijeet Negel
 
Radio Communication Band
Radio Communication BandRadio Communication Band
Radio Communication Band
Avijeet Negel
 
Transmission Media
Transmission MediaTransmission Media
Transmission Media
Avijeet Negel
 
DB-37 AND DB-9 CONNECTORS
DB-37 AND DB-9 CONNECTORSDB-37 AND DB-9 CONNECTORS
DB-37 AND DB-9 CONNECTORS
Avijeet Negel
 
Transmission Of Digital Data
Transmission Of Digital DataTransmission Of Digital Data
Transmission Of Digital Data
Avijeet Negel
 

More from Avijeet Negel (20)

TCP/IP
TCP/IPTCP/IP
TCP/IP
 
Upper OSI LAYER
Upper OSI LAYERUpper OSI LAYER
Upper OSI LAYER
 
SONET/SDH
SONET/SDHSONET/SDH
SONET/SDH
 
ATM
ATMATM
ATM
 
Frame Relay
Frame RelayFrame Relay
Frame Relay
 
X.25
X.25X.25
X.25
 
Integrated Services Digital Network (ISDN)
Integrated Services Digital Network (ISDN)Integrated Services Digital Network (ISDN)
Integrated Services Digital Network (ISDN)
 
Switching
SwitchingSwitching
Switching
 
Point to Point Protocol
Point to Point ProtocolPoint to Point Protocol
Point to Point Protocol
 
Networking and Networking Devices
Networking and Networking DevicesNetworking and Networking Devices
Networking and Networking Devices
 
DATA Link Control
DATA Link ControlDATA Link Control
DATA Link Control
 
CRC
CRCCRC
CRC
 
Error Detection and Correction
Error Detection and CorrectionError Detection and Correction
Error Detection and Correction
 
Telephone Network
Telephone NetworkTelephone Network
Telephone Network
 
Time Division Multiplexing
Time Division MultiplexingTime Division Multiplexing
Time Division Multiplexing
 
MULTIPLEXING
MULTIPLEXINGMULTIPLEXING
MULTIPLEXING
 
Radio Communication Band
Radio Communication BandRadio Communication Band
Radio Communication Band
 
Transmission Media
Transmission MediaTransmission Media
Transmission Media
 
DB-37 AND DB-9 CONNECTORS
DB-37 AND DB-9 CONNECTORSDB-37 AND DB-9 CONNECTORS
DB-37 AND DB-9 CONNECTORS
 
Transmission Of Digital Data
Transmission Of Digital DataTransmission Of Digital Data
Transmission Of Digital Data
 

Recently uploaded

Applications of artificial Intelligence in Mechanical Engineering.pdf
Applications of artificial Intelligence in Mechanical Engineering.pdfApplications of artificial Intelligence in Mechanical Engineering.pdf
Applications of artificial Intelligence in Mechanical Engineering.pdf
Atif Razi
 
Sri Guru Hargobind Ji - Bandi Chor Guru.pdf
Sri Guru Hargobind Ji - Bandi Chor Guru.pdfSri Guru Hargobind Ji - Bandi Chor Guru.pdf
Sri Guru Hargobind Ji - Bandi Chor Guru.pdf
Balvir Singh
 
Null Bangalore | Pentesters Approach to AWS IAM
Null Bangalore | Pentesters Approach to AWS IAMNull Bangalore | Pentesters Approach to AWS IAM
Null Bangalore | Pentesters Approach to AWS IAM
Divyanshu
 
Determination of Equivalent Circuit parameters and performance characteristic...
Determination of Equivalent Circuit parameters and performance characteristic...Determination of Equivalent Circuit parameters and performance characteristic...
Determination of Equivalent Circuit parameters and performance characteristic...
pvpriya2
 
Open Channel Flow: fluid flow with a free surface
Open Channel Flow: fluid flow with a free surfaceOpen Channel Flow: fluid flow with a free surface
Open Channel Flow: fluid flow with a free surface
Indrajeet sahu
 
Introduction to Computer Networks & OSI MODEL.ppt
Introduction to Computer Networks & OSI MODEL.pptIntroduction to Computer Networks & OSI MODEL.ppt
Introduction to Computer Networks & OSI MODEL.ppt
Dwarkadas J Sanghvi College of Engineering
 
SELENIUM CONF -PALLAVI SHARMA - 2024.pdf
SELENIUM CONF -PALLAVI SHARMA - 2024.pdfSELENIUM CONF -PALLAVI SHARMA - 2024.pdf
SELENIUM CONF -PALLAVI SHARMA - 2024.pdf
Pallavi Sharma
 
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
upoux
 
Accident detection system project report.pdf
Accident detection system project report.pdfAccident detection system project report.pdf
Accident detection system project report.pdf
Kamal Acharya
 
Call Girls Chennai +91-8824825030 Vip Call Girls Chennai
Call Girls Chennai +91-8824825030 Vip Call Girls ChennaiCall Girls Chennai +91-8824825030 Vip Call Girls Chennai
Call Girls Chennai +91-8824825030 Vip Call Girls Chennai
paraasingh12 #V08
 
Call For Paper -3rd International Conference on Artificial Intelligence Advan...
Call For Paper -3rd International Conference on Artificial Intelligence Advan...Call For Paper -3rd International Conference on Artificial Intelligence Advan...
Call For Paper -3rd International Conference on Artificial Intelligence Advan...
ijseajournal
 
Butterfly Valves Manufacturer (LBF Series).pdf
Butterfly Valves Manufacturer (LBF Series).pdfButterfly Valves Manufacturer (LBF Series).pdf
Butterfly Valves Manufacturer (LBF Series).pdf
Lubi Valves
 
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
ydzowc
 
Beckhoff Programmable Logic Control Overview Presentation
Beckhoff Programmable Logic Control Overview PresentationBeckhoff Programmable Logic Control Overview Presentation
Beckhoff Programmable Logic Control Overview Presentation
VanTuDuong1
 
Blood finder application project report (1).pdf
Blood finder application project report (1).pdfBlood finder application project report (1).pdf
Blood finder application project report (1).pdf
Kamal Acharya
 
Ericsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques.pptEricsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques.ppt
wafawafa52
 
Impartiality as per ISO /IEC 17025:2017 Standard
Impartiality as per ISO /IEC 17025:2017 StandardImpartiality as per ISO /IEC 17025:2017 Standard
Impartiality as per ISO /IEC 17025:2017 Standard
MuhammadJazib15
 
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
upoux
 
AI in customer support Use cases solutions development and implementation.pdf
AI in customer support Use cases solutions development and implementation.pdfAI in customer support Use cases solutions development and implementation.pdf
AI in customer support Use cases solutions development and implementation.pdf
mahaffeycheryld
 
An Introduction to the Compiler Designss
An Introduction to the Compiler DesignssAn Introduction to the Compiler Designss
An Introduction to the Compiler Designss
ElakkiaU
 

Recently uploaded (20)

Applications of artificial Intelligence in Mechanical Engineering.pdf
Applications of artificial Intelligence in Mechanical Engineering.pdfApplications of artificial Intelligence in Mechanical Engineering.pdf
Applications of artificial Intelligence in Mechanical Engineering.pdf
 
Sri Guru Hargobind Ji - Bandi Chor Guru.pdf
Sri Guru Hargobind Ji - Bandi Chor Guru.pdfSri Guru Hargobind Ji - Bandi Chor Guru.pdf
Sri Guru Hargobind Ji - Bandi Chor Guru.pdf
 
Null Bangalore | Pentesters Approach to AWS IAM
Null Bangalore | Pentesters Approach to AWS IAMNull Bangalore | Pentesters Approach to AWS IAM
Null Bangalore | Pentesters Approach to AWS IAM
 
Determination of Equivalent Circuit parameters and performance characteristic...
Determination of Equivalent Circuit parameters and performance characteristic...Determination of Equivalent Circuit parameters and performance characteristic...
Determination of Equivalent Circuit parameters and performance characteristic...
 
Open Channel Flow: fluid flow with a free surface
Open Channel Flow: fluid flow with a free surfaceOpen Channel Flow: fluid flow with a free surface
Open Channel Flow: fluid flow with a free surface
 
Introduction to Computer Networks & OSI MODEL.ppt
Introduction to Computer Networks & OSI MODEL.pptIntroduction to Computer Networks & OSI MODEL.ppt
Introduction to Computer Networks & OSI MODEL.ppt
 
SELENIUM CONF -PALLAVI SHARMA - 2024.pdf
SELENIUM CONF -PALLAVI SHARMA - 2024.pdfSELENIUM CONF -PALLAVI SHARMA - 2024.pdf
SELENIUM CONF -PALLAVI SHARMA - 2024.pdf
 
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
 
Accident detection system project report.pdf
Accident detection system project report.pdfAccident detection system project report.pdf
Accident detection system project report.pdf
 
Call Girls Chennai +91-8824825030 Vip Call Girls Chennai
Call Girls Chennai +91-8824825030 Vip Call Girls ChennaiCall Girls Chennai +91-8824825030 Vip Call Girls Chennai
Call Girls Chennai +91-8824825030 Vip Call Girls Chennai
 
Call For Paper -3rd International Conference on Artificial Intelligence Advan...
Call For Paper -3rd International Conference on Artificial Intelligence Advan...Call For Paper -3rd International Conference on Artificial Intelligence Advan...
Call For Paper -3rd International Conference on Artificial Intelligence Advan...
 
Butterfly Valves Manufacturer (LBF Series).pdf
Butterfly Valves Manufacturer (LBF Series).pdfButterfly Valves Manufacturer (LBF Series).pdf
Butterfly Valves Manufacturer (LBF Series).pdf
 
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
 
Beckhoff Programmable Logic Control Overview Presentation
Beckhoff Programmable Logic Control Overview PresentationBeckhoff Programmable Logic Control Overview Presentation
Beckhoff Programmable Logic Control Overview Presentation
 
Blood finder application project report (1).pdf
Blood finder application project report (1).pdfBlood finder application project report (1).pdf
Blood finder application project report (1).pdf
 
Ericsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques.pptEricsson LTE Throughput Troubleshooting Techniques.ppt
Ericsson LTE Throughput Troubleshooting Techniques.ppt
 
Impartiality as per ISO /IEC 17025:2017 Standard
Impartiality as per ISO /IEC 17025:2017 StandardImpartiality as per ISO /IEC 17025:2017 Standard
Impartiality as per ISO /IEC 17025:2017 Standard
 
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
一比一原版(uofo毕业证书)美国俄勒冈大学毕业证如何办理
 
AI in customer support Use cases solutions development and implementation.pdf
AI in customer support Use cases solutions development and implementation.pdfAI in customer support Use cases solutions development and implementation.pdf
AI in customer support Use cases solutions development and implementation.pdf
 
An Introduction to the Compiler Designss
An Introduction to the Compiler DesignssAn Introduction to the Compiler Designss
An Introduction to the Compiler Designss
 

Music bell circuit

  • 4. PRINCIPLE OF OPERATION  This circuits uses very few component and gives melody sound. It uses 3 terminal IC UM66 and can be build small enough to be placed inside a greeting card and operated off a single 3V flat button cell. There is not much to the circuit. The UM66 is connected to its supply and its output fed to a transistor for amplification. Any common speaker can be used or a “flat” piezoelectric tweeter like the one found in alarm wrist watches. If you use the piezo , then it can be connected directly between the output pin 1 and ground pin 3 without the transistor.
  • 5.  The UM66 looks like a transistor with 3 terminals. It is complete miniature tone generator with a tune. Now they come with wide variety of different tunes. For amplification we have used a NPN transistor which is BC548. Here BC548 makes a common emitter circuit. For limiting the base current we have used a resistance of 220 Ohms so that transistor will not get damaged by excess current.
  • 7.