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Page Name: OPAMP APPLICATIONS ADDER SUBTRACTOR COMPARATOR CIRCUITS


Posted by: engineering project helper
Created at: Friday 14th of December 2012 02:21:21 AM
Last Edited Or Replied at :Friday 14th of December 2012 02:21:21 AM
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mation of input voltages. Here the feedback forces a virtual ground to exist at the inverting input . The output is equal to the negative weighted sum of the input voltages. The summing operation depends exclusively on the sum of the resistor ratios. Fig . shows the inverting configuration with three inputs Va, Vb, Vc depending on the relationship between the feedback resistor RF and the input resistors Ra ,Rb and Rc , the circuit can be used as either a summing amplifier, scaling amplifier, or averaging amplifier. By connecting more than one input voltages to the inverting input, the resultin..................==> [ Click Here to Read More ]



Page Name: mini project in electronics using ic 741


Posted by:
Created at: Saturday 22nd of September 2012 12:54:58 PM
Last Edited Or Replied at :Saturday 22nd of September 2012 12:54:58 PM
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my name is shaheen m rajani.
im an engineering student,studying in third year.
i need some best projects for ic 741.

..................==> [ Click Here to Read More ]



Page Name: LISTENING BUG


Posted by: project source code cheker
Created at: Wednesday 25th of July 2012 04:06:45 AM
Last Edited Or Replied at :Wednesday 25th of July 2012 04:06:45 AM
visha kits, listening bug , listening bug 9v project report, 36ohk6dgmcd1n , project report on ic 741 listening bug, listening bug ppt , listening bug using ic 741, listening bug project pdf ,
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41 used in the inverting
mode with a single supply using divider network of resistors. Varying the feedback through 2.2M; preset
can set the gain of IC 741. The output of IC 741 is further amplified using transistors BC 187/188 pair.

Construction

First of all let us consider a few basics in building electronic circuits on a printed circuit board. VISHA Kit
boards also come pre-drilled and with the outline of the components and their identification print. You
should place on the board the resistors, the capacitors, and the transistors & make sure that the electrolytic capacitor..................==> [ Click Here to Read More ]



Page Name: DIGITAL THERMOMETER


Posted by: project ppt helper
Created at: Friday 11th of May 2012 05:14:28 AM
Last Edited Or Replied at :Friday 14th of February 2014 02:15:34 PM
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very basic power failure lighting circuit based around a relay. This simple circuit has many uses, from lighting up rooms and walkways in the case of a power failure, to monitoring and security uses. There are many different power failure circuits out there based on 555timers or transistors but they all have different problems including limited input voltage, price and complexity, and poor backup power. This unit has been designed to work with mains power all the way down to 5 volts, and power 3 LEDs to provide light for a hallway or a child’s room in the event of power failure. The PCB inc..................==> [ Click Here to Read More ]



Page Name: Study the working of 4bit R2R ladder DA converter circuit


Posted by: academic expert
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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Name– study of digital to analog converter using R–2R ladder circuit.
Aim – to study the working of 4–bit R–2R ladder, D/A converter circuit.
Apparatus – IC 741, circuit board, variable DC power supply, resistors, connecting wires, soldering iron, cutter etc.
Circuit diagram



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) Ta..................==> [ Click Here to Read More ]



Page Name: shadow alarm


Posted by: DEEPESH PALI
Created at: Friday 25th of March 2011 01:02:27 AM
Last Edited Or Replied at :Wednesday 18th of July 2012 03:07:26 AM
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making of shadow alarm pcb..................==> [ Click Here to Read More ]



Page Name: main project topics for electronics and communication


Posted by: seminar topics maker
Created at: Wednesday 29th of December 2010 05:46:28 AM
Last Edited Or Replied at :Monday 30th of July 2012 01:30:27 AM
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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
235. Automatic phase Selector (741 based)
236. Motion Sensor for Security Light
237. Magic Light
238. Robot control using RF (wireless) communication.
239. Atmel AVR ISP Dongle
240. Digital Thermometer
241. Desktop Power Supply
242. RF Based Wireless Text Message Transfer & Display
243. Stereo Tape Head Preamplifier For PC Sound Card
244. Remote Access Control System..................==> [ Click Here to Read More ]



Page Name: ELECTRONIC SIREN


Posted by: seminar topic helper
Created at: Friday 08th of October 2010 01:21:58 AM
Last Edited Or Replied at :Friday 08th of October 2010 01:21:58 AM
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ELECTRONIC SIREN

The 741 is a versatile device and it can be used in the design of a wide variety of sound-effects generators. This circuit produces a siren. The siren can be used in conjuction with other circuits. The siren can be used as the alarm output of a home or automobile security system. Before discussing the circuit operation, let us see the description and working of 741 IC. An operational amplifier, often referred to as an Op Amp, is a very high gain & high performance amplifier designed to amplify AC and DC signal voltage. As shown in Fi..................==> [ Click Here to Read More ]



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