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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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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 di..................[:=> 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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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 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..................[:=> 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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Write the expression for the period of output waveforms. Calculate the values of R1 & C1 for three different frequencies.
3) Draw the ideal output voltage waveform of the circuit.
4) Connect the circuit with different values of R1 and C1. Observe each output on CRO and trace the waveforms.
5) Measure the periods and frequencies from CRO and compare them with theoretical results.

Brief theory – as shown in the above circuit, simple clock generator can be constructed using Schmitt trigger NOT gates. A LOW value of R1 is used across first inverter to bias it near ..................[:=> 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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lify the final signal. Two transistors one NPN & other PNP type transistor is used in this configuration. This amplify signal converted back into audio signal with the help of speaker. Push pull amplifier is used because the speaker has low impedance & push pull amplifier has low output impedance. Which easily matched with speaker & more power can be transmitted.
CHAPTER 2
INTRODUCTION
2.1 Introduction

Audio amplifier is based on amplification property of transistor. When any signal gives to transistor at input terminal then transistor amplify that signal at the output..................[:=> 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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attery Charger
382. Uc Based Automatic Power Factor Correction
383. SMART
384. Transistor Curve Tracer
385. Water level indicator With Alarm
386. Obstacle detection Robot.
387. Motorbike Alarm
388. Mosfet Charlferistics Trainer
389. Fastest-finger-first-indicator
390. Electronic Metronome
391. Pc Based Temperature Monitoring And Control
392. Short Wave AM Transmitter
393. Secret Bell
394. Design And Implementation Of Object Counter For Industrial Automation
395. Digital Dice
396. Soft Musical Telephone Ringer
397. Telep..................[:=> 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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remote circuit which enables switching Ëœonâ„¢ and Ëœoffâ„¢ of appliances through telephone lines. It can be used to switch appliances from any distance, overcoming the limited range of infrared and radio remote controls.
The circuit described here can be used to switch up to nine appliances (corresponding to the digits 1 through 9 of the telephone key-pad). The DTMF signals on telephone instrument are used as control signals. The digit ˜0™ in DTMF mode is used to toggle between the appliance mode and normal telephone operation mode. Thus the telephone can be used to swit..................[:=> Show Contents <=:]



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