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listening bug synopsis pdf


Posted by:
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
listening bug , listening bug project pdf, listening bug pdf ic 741 , pdf on project on listeningbug, listening bug of ic741 , pdf on listening bug, listening bug pdf , pdf of listening bug,
I Want Synopsis Of listening bug us..................[:=> Show Contents <=:]



mini project in electronics using ic 741


Posted by:
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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simple circuits for intercom using 741 ic


Posted by:
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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I WANT..................[:=> Show Contents <=:]



analog to digital converter circuit using ic 741


Posted by:
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 an analog to dig..................[:=> 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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t analog information is called as digital to analog conversion. Such converter is also called as decoding device. There are two types of such converters – the weighted resistor DAC and the R–2R ladder DAC.
The R–2R ladder (binary ladder) is a resistive network whose output voltage is a properly weighted sum of the digital inputs. It uses resistors of only two values, the R and the 2R, as shown in the above figure.
It has four digital inputs D, C, B and A with positional values of bits as 23, 22, 21 and 20 respectively. The equivalent analog voltage is (Va) which is obtained at the in..................[:=> Show Contents <=:]



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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HIGH and LOW with the input threshold voltages and constitutes a Hysteresis loop of curve –

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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.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) Operational amplifier
c) Push pull amplifier
d) Output Stage (Speaker)
First of all there is a condenser mike which is used to collect the audio signal (input signal) and to convert it into electrical signal. This electrical signal is goes to inverting input of the operational amplifier through a capacitor which is used to block t..................[:=> 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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th PC Logging)
183. LFSR (Linear Feedback Shift Register)
184. Traffic Controller with real Time Clock
185. (b)With Wireless Click
186. Mobile Car Stereo Player
187. EMFT Elevation Using uC
188. Wireless Based Device Control.(RF)
189. Front Door Guard
190. Speed Control of DC Motor Using Pulse-Width Modulation
191. Car-Reversing Horn With Flasher
192. A Hierarchical Priority Encoder
193. Running Message Display
194. Electronic Jam
195. Mobile Bug
196. Multitone Siren
197. Multiband CW Transmitter
198. Automatic Temperature Controlled Fan
199. Traffic Baton
200. Light sensin..................[:=> 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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le between the appliance mode and normal telephone operation mode. Thus the telephone can be used to switch on or switch off the appliances also while being used for normal conversation.
http://www.electronic-circuits-diagrams.com/remotecontrolsimages/2.gif
The circuit uses IC KT3170 (DTMF-to-BCD converter), 74154 (4-to-16-line demult-iplexer), and five CD4013 (D flip-flop) ICs. The working of the circuit is as follows.
Once a call is established (after hearing ring-back tone), dial ˜0™ in DTMF mode. IC1 decodes this as ˜1010,™ which is further demultiplexed by ..................[:=> Show Contents <=:]



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