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heat sensor with fan cooling using ic 741 pdf


Posted by:
Created at: Friday 16th of November 2012 01:22:43 AM
Last Edited Or Replied at :Friday 16th of November 2012 01:22:43 AM
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sandeepGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG..................[:=> 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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attachment=13862]

Procedure –
1) Identify the given components.
2) Solder the circuit using the given components.
3) Connect power supply to the circuit.
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 con..................[:=> 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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put 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 <=:]



Vertical Cooling Device Using Heat-Pipe Based on Natural Convection PowerKicker


Posted by: seminar class
Created at: Tuesday 03rd of May 2011 01:09:37 AM
Last Edited Or Replied at :Tuesday 03rd of May 2011 01:09:37 AM
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URE AND FEATURES OF POWERKICKER
Conventional boiling cooling system as shown in Figure 1
creates problems about global environment preservation
such as ozone depletion and global warming because its
structure is such that heat-generating components are
directly immersed in an electrical-insulating cooling medium
such as CFCs or CFC substitutes consuming a large
amount of such a cooling medium.
On the other hand, horizontal cooling device using heatpipe
based on natural convection as shown in Photo 2
can, since it uses heat-pipes as a heat-radiating component
toward the fins, not..................[:=> 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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eedback 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) 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..................[:=> 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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Vehicles
105. Finger Print Based Voting M/C
106. Bidirectional Visitor Counter cum Power Management
107. Wireless Hovercraft
108. Implementation of image restoration.
109. Song Number Display
110. 4- Direction Obstacle /Object Detector & Multi Phonic Indicater for Blind
111. Implementation of color optimization.
112. Laptop Protector
113. Development Of Pc Based PWM For Dc Motor EWEED Control
114. Digital Code Lock.
115. Luggage Security System
116. With Wireless Camera
117. Implementation of visual cryptography using DH method.
118. Telephone Receiver
119. CDMA Transceive..................[:=> Show Contents <=:]



Wireless RF Distribution in Buildings using Heating and Ventilation Ducts


Posted by: projects wizhard
Created at: Thursday 29th of July 2010 08:27:45 AM
Last Edited Or Replied at :Thursday 29th of July 2010 08:27:45 AM
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buildings is suggested by the recognition that every building is equipped with an RF waveguide distr..................[:=> 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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e corresponding flip-flop to alternate state. The flip-flop output is used to drive a relay (RL2) which can switch on or switch off the appliance connected through its contacts. By dialing other digits in a similar way, other appliances can also be switched Ëœonâ„¢ or Ëœoff.â„¢
Once the switching operation is over, the 220-ohm loop resistance and 10kHz tone needs to be removed from the telephone line. To achieve this, digit ˜0™ (in DTMF mode) is dialed again to toggle flip-flop-1 to de-energise relay RL1, which terminates the loop on line and the 10kHz tone is also discon..................[:=> Show Contents <=:]



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