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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 TO KNOW HOW INTER..................[:=> Show Contents <=:]



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
741 used as an intercomm , intercom using 741 ic, ic 741 working as intercom , simple projects using 741ic, simple projects using ic 741 , projects using 741, linear integrated circuits using 741ic , intercom circuit using ic 741, linear integrated projects using741 ic , intercomm using lm741, intercom using 741 , 741 ic easy circuit project, 741ic using project , 741 intercom circuit, simple and easy projects using ic 741 , intercom using ic 741, simple circuits using ic 741 , intercom circuit using ic 741 images, 741ic project circuit , simple intercom project using ic 741, ic741 simple circuit , intercom using lm741,
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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 digital converter..................[:=> 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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cuit.
4) Measure the analog output voltage (Va) w.r.t. ground for all binary inputs from 0000 to 1111.
5) Tabulate the results in observation table.
6) Plot the graph of analog output voltage versus digital inputs.


Brief theory – the process of translation of digital information into equivalent 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 re..................[:=> 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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izable by the Hysteresis symbol on its logic symbol. For the Schmitt trigger inverter, when the input voltage reaches the upper threshold voltage (+Vsat) of +1.7V the output goes LOW. When the input voltage falls to the lower threshold voltage (–Vsat) of +0.9V, the output goes HIGH. Following figure shows how the output swings 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 d..................[:=> 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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or used at the input of operational amplifier to block the dc voltage & pass the audio signal only.
The condenser mike connected to a resistor of 10kΩ which provide it a dc voltage to it. Operational amplifier (IC741) has two inputs one is inverting at pin 2 & another is non inverting at pin 3. It has one output at pin 6. Pin 7 of operational amplifier is connected to +Vcc (+5volts) & pin 4 is connected to –Vcc (zero volt).
Then we are using the push pull amplifier which is used to amplify the output signal of operational amplifier which is nothing but the input audio signal. We are usi..................[:=> 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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220. Water-Level Indicator Using 7-segment display
221. Parallel telephone with Secrecy
222. Wireless data communication using RF.
223. Moving Message Display Using LCD (20x4)
224. Bottle Filling System
225. Servo Stabilizer using Mirocontroller
226. Communication.
227. Low Cost Automatic Gate LIght With A Musical Bell
228. Simple Digital Security System
229. Solar Lighting System
230. Electronic Motor Starter
231. Stepper Motor Conrol Using PC
232. Embedded based Electronic Voting Machine
233. Wirelss Multi Channel Zone Alarm System
234. Automatic Phase Selection System
2..................[:=> 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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op-1 to de-energise relay RL1, which terminates the loop on line and the 10kHz tone is also disconnected. The telephone line is thus again set free to receive normal calls.This circuit is to be connected in parallel to the telephone instrument..................[:=> Show Contents <=:]



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