how to design an analog to digital converter circuit using ic 741 ....etc

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To get information about two way intercom refer the links below

http://seminarsprojects.net/Thread-design-and-construction-of-a-two-%E2%80%93-way-wired-intercom

http://seminarsprojects.net/Thread-two-way-intercom-project-report-pdf ....etc

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To get full information or details of transistor intercom circuit please have a look on the pages

http://seminarsprojects.net/Thread-simple-intercom?pid=34835&mode=threaded

if you again feel trouble on transistor intercom circuit please reply in that page and ask specific fields in transistor intercom circuit ....etc

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INTRODUCTION

This circuit will let you talk with another person in a distant room.The kit will be in one room and one speaker will be in the other room.

When the switch is in first position speaker No.1 pick up sound and change into electronic signals. The signals passes through the circuit and it amplified and sent to the 2nd speaker where it is changed into a sound you can hear. When the position of switch is changed Electric connection to the speaker change places and there by the speaker through which we were speaking p ....etc

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list of mini projects using op amps, circuit diagrams and their clear description on working and connections ....etc

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I want to know how to operate a 2 way intercom.. I've made one ! ....etc

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i want detailed working principle of intercom circuit for my 3rd sem electronics project plz mail to [email protected]..

sohil parikh ....etc

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To get full information or details of transistor intercom circuit ppt please have a look on the pages

http://seminarsprojects.net/Thread-simple-intercom?pid=34835&mode=threaded

if you again feel trouble on transistor intercom circuit ppt please reply in that page and ask specific fields in transistor intercom circuit ppt ....etc

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intercom using ic lm386 working principle

In this doorphone circuit,an 8 ohm speaker is used both as a microphone and also an output device. The BC109C stage amplifies in common base mode, giving good voltage gain , whilst providing a low impedance input to match the speaker. Self DC bias is used allowing for variations in transistor current gain. An LM386 is used in non-inverting mode as a power amplifier to boost voltage gain and drive the 8 ohm speaker. The 10k potentiometer acts as the volume control, and overall gain may be adjusted using ....etc

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Description.

Here is a simple but effective intercom circuit that is completely based on transistors. The circuit is based on a three stage RC coupled amplifier. When the pushbutton S2 is pressed, the amplifier circuit wired around T1 & T2 becomes an astable multivibrator and begins to produce the call signals. These call signals will be amplified by the transistor T3 to drive the speaker. When the S2 button is released, the circuit will behave like an ordinary amplifier and you can talk to the other side through it.

To construct a ....etc

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