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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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OPAMP APPLICATIONS – ADDER, SUBTRACTOR & COMPARATOR CIRCUITS



THEORY :

Adder :

Adder circuit is a Summing Amplifier. Op-amp can be used to design a circuit whose output is the sum of several input signals. Such a circuit is called a summing amplifier or a summer. Summing amplifier can be classified as inverting & non-inverting summer depending on the input applied to inverting & non-inverting terminals respectively. Fig shows an inverting summer with two inputs. Here the output will be the linear sum..................==> [ 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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tage across the base emitter junction is amplified by the second operational amplifier (IC4), before the temperature is displayed on the meter. Preset VR1 is used to set zero reading on the meter and preset VR2 Is used to set the range of temperature measurements.
Operational amplifies IC3 &IC4 operate off regulated +5v power supply, which is derived from three terminal positive voltage regulator IC 7805 (IC1) and negative low drop out regulator IC 7660(IC2).the entire circuit works off a 9v battery.
Block diagram
A VERY SIMPLE POWER FAILURE LIGHT
This is a..................==> [ 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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e Receiver
305. Automatic Beverage Vending M/C
306. MAT Switch
307. Digital Dice with numeric display
308. Rank Display system w/o Race
309. Hybrid Power system
310. Battery-level Indicator
311. Poor Man’s Hearing Aid
312. Miniature strobe light
313. PC-based 7 segment rolling display
314. Watch Dog for Telephones
315. Fuild Level Detector
316. Robot Controlling Using RF
317. Wireless Biomedical Monitoring System
318. Over Current Relay Trainer Kit
319. Wiper Speed Controller
320. Automatic-Off Timer For CD Players
321. Telephone Recharge Energy Meter
322. Electrical E..................==> [ 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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