Sub Code : 10ES32 IA Marks : 25
Hrs/ Week : 04 Exam Hours : 03
Total Hrs. : 52 Exam Marks : 100
UNIT 1:
Diode Circuits: Diode Resistance, Diode equivalent circuits, Transition and
diffusion capacitance, Reverse recovery time, Load line analysis, Rectifiers,
Clippers and clampers. 6 Hrs
UNIT 2:
Transistor Biasing: Operating point, Fixed bias circuits, Emitter stabilized
biased circuits, Voltage divider biased, DC bias with voltage feedback,
Miscellaneous bias configurations, Design operations, Transistor switching
networks, PNP transi ....etc

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power amplifier circuit diagram



Circuit Description
There are many instances where a simple and reliable power amplifier is needed - rear and centre channel speakers for surround-sound, beefing up the PC speakers, low powered tweeter amplifier, etc. For those who want to build their own 'Gainclone' amplifier, this will certainly do the job :-)
This project (unlike most of the others, but in a similar vein to Project 19) is based almost directly on the typical application ci ....etc

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A Multi-cell Linear Power Amplifier for Driving Piezoelectric Loads
RAKESH K P
S-7 AEI
Roll No: 48
College Of Engineering , Trivandrum
2007-11 batch


Introduction
Describes about multicell amplifier , developed by connecting floating signal modules in series to drive piezoelectric devices.

PIEZOELECTRIC devices or actuators have been used as positioners or driving motors in many fields such as optics, precision machining, and fluid control, as well as in optical disk drives ....etc

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HI this is Arzoo,
I am a student pursuing BSC (IT) from raisoni college,nagpur.As it is my final year we have been given seminar to present it in front of a bunch of audience.I was really impressed with the kind of topics your site offered.If you could please guide me for the topic HUMAN COMPUTING MACHINE UNDERSTANDING OF HUMAN BEHAVIOR ppt ?
....etc

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Abstract

A human's ability to perform physical tasks is limited by physical strength, not by intelligence. We define extenders as a class of robot manipulators worn by humans to augment human mechanical strength, while the wearer's intellect remains the central control system for manipulating the extender. Our research objective is to determine the ground rules for the design and control of robotic systems worn by humans through the design, construction, and control of several prototype experimental direct-drive/non-direct-drive multi-deg ....etc

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Circuit of an automatic switch for audio power amplifier stage is presented here. The circuit uses stereo
preamplifier output to detect the presence of audio to switch the audio power amplifier on only when
audio is present. The circuit thus helps curtail power wastage. IC1 is used as an inverting adder. The
input signals from left and right channels are combined to form a common signal for IC2, which is used
as an open loop comparator. IC3 (NE556) is a dual timer. Its second section, i.e., IC3(b), is configured
as mono ....etc

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HUMAN COMPUTING & MACHINE UNDERSTANDING OF HUMAN BEHAVIOR
ABSTRACT

A widely accepted prediction is that computing is moving background projecting the human user into foreground. Today computing has become a key in every technology. If this prediction is to come true, then next generation computing, which we will call as human computing is about anticipatory user interfaces that should be human centered, built for humans based on human model.

In the present paper we will discuss how human computing leads to understanding of human beh ....etc

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mode of operation of a telephone amplifier.it uses an LM386 which amplifies the signal coming into the telephone inorder to increase the volume
....etc

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CAPACITIVELY COUPLED BIOSIGNAL INSTRUMENTATION SYSTEM FOR POWER AND SIGNAL ISOLATION
SEMINAR REPORT
Submitted by
Archana Nair . I
Seventh Semester B.Tech
Applied Electronics and Instrumentation
DEPARTMENT OF ELECTRONICS AND COMMUNICATION ENGINEERING
COLLEGE OF ENGINEERING
TRIVANDRUM
2010

ABSTRACT

Requirements for patient safety and a high interference rejection ratio in medical equipment create a demand for effective isolation devices. A system scale approach that uses cap ....etc

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Automatic temperature controlled fan
Here is a scheme through which the fan can be linearly thespeed controlledautomatically, dependingon the room temperature. The scheme is effective because it ishighly control thyristors forpower. Alternatively, samecircuit can be used to automatically control AC temperaturecontrolled.In this diagram, temperature NTC thermistor is sensorused, i.e. one Havinga multiplier negative temperatures. The resistance of the thermistor in Thevalue 25 with the isabout 1 kilogram-ohm.Op Amp A1 essentially works for ASI t ....etc

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