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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
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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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DIGITAL THERMOMETER

Digital thermometer can measure temperatures up to 150c with an accuracy of +1c.temparature is read on a 1volt full scale deflection moving coil voltmeter or digital voltmeter.
Working
Operational amplifier IC741(IC3) provides a constant flow of current through the base emitter junction of npn transistor BC 108(T1). The voltage across base emitter junction of the transistor Is proportional to its temperature. the transistor used this way makes a low cost sensor. Silicon diode can be used instead of the transistor. The small variation in vol..................==> [ 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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bulate 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 resistive network whose output voltage is a properly weighted sum of the digital inputs. It uses resistors of only two values, the R a..................==> [ 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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ith IR Senser Temp Sensar Reed S/W Sensar & Smoke Sensar
442. Sensitive Temperature Switch
443. RFID Based Rechargeable Energy Meter
444. Multiplex Energy Distribution Management System (MEMDS)
445. Verification of Thevnin Theoren Trainar Kit
446. Remote Balance Enquiry System
447. Autonomous Robot
448. Heat-Sensitive Switch
449. House Security System
450. Matlab Based CDMA Communication
451. Wireless Equipment Control Using uC
452. UC Based Equipment Control using Remote Login
453. AF/RF Signal Tracer
454. Temperatures Indicator & Controller Using AT89C51
455. Pyroe..................==> [ 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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