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listening bug synopsis pdf


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Created at: Saturday 20th of October 2012 11:36:20 PM
Last Edited Or Replied at :Saturday 20th of October 2012 11:36:20 PM
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I Want Synop..................[:=> Show Contents <=:]



mini project in electronics using ic 741


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Created at: Friday 12th of October 2012 12:54:48 PM
Last Edited Or Replied at :Friday 12th of October 2012 12:54:48 PM
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looking for mini proj..................[:=> Show Contents <=:]



simple circuits for intercom using 741 ic


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Created at: Thursday 04th of October 2012 03:06:30 AM
Last Edited Or Replied at :Thursday 04th of October 2012 03:06:30 AM
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analog to digital converter circuit using ic 741


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Created at: Wednesday 03rd of October 2012 10:41:31 AM
Last Edited Or Replied at :Wednesday 03rd of October 2012 10:41:31 AM
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how to design ..................[:=> Show Contents <=:]



Study the working of 4bit R2R ladder DA converter circuit


Posted by: seminar class
Created at: Friday 13th of May 2011 11:10:18 PM
Last Edited Or Replied at :Friday 13th of May 2011 11:10:18 PM
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mbinations into their equivalent analog output voltages.
2) The operational amplifier is used in the circuit for scaling the value of output voltage.
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Study the working of Schmitt trigger inverter as square wave generator


Posted by: seminar class
Created at: Friday 13th of May 2011 10:58:03 PM
Last Edited Or Replied at :Tuesday 02nd of October 2012 02:41:37 AM
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Conclusion – the circuit produces square waves whose frequency can be changed by R1 and C1. Its +Vsat and –Vsat values depend on charging and discharging of timing capacitor...................[:=> Show Contents <=:]



AUDIO AMPLIFIER full report


Posted by: seminar class
Created at: Friday 22nd of April 2011 06:20:00 AM
Last Edited Or Replied at :Friday 22nd of April 2011 06:20:00 AM
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er then this amplified electrical signal is converted back into the audio signal. This is the basic introduction of simple audio amplifier.
The variable resistance is used to control the gain of operational amplifier. Gain of the circuit is depends upon the feedback of the circuit.
CHAPTER 3
BLOCK DIAGRAM
3.1 Block Diagram
Block diagram has four blocks as given bellow:-
Audio signal (input)
Amplified audio signal (output)
3.2 Description of Block Diagram

The block diagram of audio amplifier is divided into 4 blocks
a) Input Stage (Condenser mike)
b) Operati..................[:=> Show Contents <=:]



main project topics for electronics and communication


Posted by: project topics
Created at: Wednesday 29th of December 2010 05:46:28 AM
Last Edited Or Replied at :Sunday 27th of March 2011 03:37:24 AM
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117. Implementation of visual cryptography using DH method.
118. Telephone Receiver
119. CDMA Transceiver
120. Clock Controller Using 8051
121. uC based College Management
122. Automatic Switch For Audio Power Amplifier
123. Voice Scrambler
124. Robotic ARM using PLC
125. Quality FM Transmitter
126. Electronic Security System
127. Tiny Dew Sensor
128. Help Quit Wateh
129. Telephone line based Audio Muting
130. Microcontroller Based Line Speed Meter
131. SPEED synchronization of two DC motors
132. Water Heat C..................[:=> Show Contents <=:]



Remote control using telephone


Posted by: computer science crazy
Created at: Wednesday 09th of September 2009 02:02:38 AM
Last Edited Or Replied at :Wednesday 09th of September 2009 02:24:07 AM
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20-ohm loop on telephone line disconnects the ringer from the telephone line in the exchange. The line is now connected for appliance mode of operation.
If digit ˜0™ is not dialed (in DTMF) after establishing the call, the ring continues and the telephone can be used for normal conversation. After selection of the appliance mode of operation, if digit ˜1™ is dialed, it is decoded by IC1 and its output is ˜0001™. This BCD code is then demultiplexed by 4-to-16-line demultiplexer IC2 whose corresponding output, after inversion by a CD4049 inverter gate, goes to logic 1..................[:=> Show Contents <=:]



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