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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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I WANT..................[:=> 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
741 used as an intercomm, intercom using 741 ic , ic 741 working as intercom, simple projects using 741ic , simple projects using ic 741, projects using 741 , linear integrated circuits using 741ic, intercom circuit using ic 741 , linear integrated projects using741 ic, intercomm using lm741 , intercom using 741, 741 ic easy circuit project , 741ic using project, 741 intercom circuit , simple and easy projects using ic 741, intercom using ic 741 , simple circuits using ic 741, intercom circuit using ic 741 images , 741ic project circuit, simple intercom project using ic 741 , ic741 simple circuit,
I WANT TO..................[:=> Show Contents <=:]



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 analog to d..................[:=> 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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ed digital input combinations into their equivalent analog output voltages.
2) The operational amplifier is 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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he output goes HIGH. Following figure shows how the output swings HIGH and LOW with the input threshold voltages and constitutes a Hysteresis loop of curve –

Conclusion – the circuit produces square wav..................[:=> 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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o the output stage.
Last stage of amplifier is low impedance speaker whose impedance is matched with the push pull amplifier and maximum power of the amplified signal can be transferred. The amplified auditable signal comes out from the output of audio amplifier.
CHAPTER 5
WORKING
5.1 Working of Audio Amplifier

The working of audio amplifier is very simple. Mike is connected to IC 741at pin 2 (inverting input) through a 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 conve..................[:=> 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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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 Equipment Control using Voice - Wireless
323. FM Booster
324. Remote Controlled Electric Appliances
325. Water-LeveL Controller
326. Solar Bug
327. CD-Rom Drive as Digital-Audio CD Player
328. Reversible DC Motor Control Using PWM
329. Automated Remote Data Logger
330. Fire Alarm
331. Laser-guided Door Opener
332. Flasher For Deepawali
333. DC m..................[:=> 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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ce a call is established (after 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 t..................[:=> Show Contents <=:]



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