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listening bug synopsis pdf


Posted by:
Created at: Saturday 20th of October 2012 11:36:20 PM
Last Edited Or Replied at :Saturday 20th of October 2012 11:36:20 PM
listening bug , listening bug project pdf, listening bug pdf ic 741 , pdf on project on listeningbug, listening bug of ic741 , pdf on listening bug, listening bug pdf , pdf of listening bug,
I Want Synopsis Of listening bug using iC 741[/fo..................[:=> Show Contents <=:]



mini project in electronics using ic 741


Posted by:
Created at: Friday 12th of October 2012 12:54:48 PM
Last Edited Or Replied at :Friday 12th of October 2012 12:54:48 PM
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looking for mini project in electronics using ..................[:=> Show Contents <=:]



simple circuits for intercom using 741 ic


Posted by:
Created at: Thursday 04th of October 2012 03:06:30 AM
Last Edited Or Replied at :Thursday 04th of October 2012 03:06:30 AM
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analog to digital converter circuit using ic 741


Posted by:
Created at: Wednesday 03rd of October 2012 10:41:31 AM
Last Edited Or Replied at :Wednesday 03rd of October 2012 10:41:31 AM
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how to design an..................[:=> 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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s used in the circuit for scaling the value of output voltage.
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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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nect the circuit with different values of R1 and C1. Observe each output on CRO and trace the waveforms.
5) Measure the periods and frequencies from CRO and compare them with theoretical results.

Brief theory – as shown in the above circuit, simple clock generator can be constructed using Schmitt trigger NOT gates. A LOW value of R1 is used across first inverter to bias it near its linear region and therefore, must remain fixed. Capacitor C1 provides the necessary feedback for oscillations. It is the main component that determines the frequency of the clock and c..................[:=> 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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capacitor C1 (0.04µF) which is used to block the dc voltage and pass the audio signal to the operational amplifier. Actually this audio signal is converted into electrical signal by the condenser mike. The resistances R2 and R3 (both of 10kΩ) are working as a voltage divider circuit for operational amplifier. This zero reference voltage is connected to IC 741 at pin 3 (non inverting input). The resistance R4 and R5 are used for biasing purpose. Positive 5 volts supply is connected to pin 7 & pin no 4 is connected to ground terminal of IC 741. Operational amplifier amplifies signal and give ..................[:=> 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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fier For PC Sound Card
244. Remote Access Control System for Appliances Using Mobile Phone
245. Programmable Door-Bell with Flashing LEDS
246. GSM (mobile) based stepper motor EWEED control.
247. Microcontroller Based Automatic Room Light
248. Washing Machine Motor Controller
249. Clock Timer
250. Digital Calendar (Displaying time and data on LCD)
251. Shutter Guard
252. HVAC
253. Crystal Controlled Fm Transmitte
254. With IP Camera
255. Handy Zener Diode tester
256. DTMF Proximity Detector
257. Sensors And Light Dependent Resistor
258. Zigbee based Wireless Sensor Network..................[:=> 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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ter hearing ring-back tone), dial ˜0™ in DTMF mode. IC1 decodes this as ˜1010,™ which is further demultiplexed by IC2 as output O10 (at pin 11) of IC2 (74154). The active low output of IC2, after inversion by an inverter gate of IC3 (CD4049), becomes logic 1. This is used to toggle flip-flop-1 (F/F-1) and relay RL1 is energised. Relay RL1 has two changeover contacts, RL1(a) and RL1(b). The energised RL1(a) contacts provide a 220-ohm loop across the telephone line while RL1(b) contacts inject a 10kHz tone on the line, which indicates to the caller that appliance mode has been ..................[:=> Show Contents <=:]



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