sir/madam
i want circuit digram of twoway intercom using ic tlv2374 and also want noice cancllection in this circuit .
please help me

 

sir/madam
i want circuit digram of twoway intercom using ic tlv2374 and also want noice cancllection in this circuit .
please help me

Welcome to AAC, an extended on-line community that holds access to a vast amount of experience and insights. Quite a few of the folks here are engineering professionals, including some who provide engineering commercially, as a fee for service business.

This Is An interesting request! Can the TS provide the data sheet for that IC? The "TLV2374" device, so that we do not need to research it??
AND in addition some description of just what functions of that device would be utilized, and in what sort of arrangement.

 

Why do you want to build this? Is it a school project? Are you planning on marketing the finished product? The reason makes a difference to what we can do for you.

 

It appears to be a fairly high speed op amp.

https://www.ti.com/lit/ds/symlink/t...62528&ref_url=https%3A%2F%2Fwww.google.com%2F

 

SPEAKERPHONE_ADAPTER - Telephone-Related_Circuit - Electrical_Equipment_Circuit - Circuit Diagram - SeekIC.com

There are Bluetooth noise canceling headphone sets.

 

I suspect this gentleman wants to do it for himself, DIY is never going to be as good, IMO.

 

I suspect this gentleman wants to do it for himself, DIY is never going to be as good, IMO.

I totally disagree about DIY never being as good. The exceptions being if the DIY'er lacks skill, ability, knowledge, and resources.
I have seen and understood the simple scheme for creating a non-switching, full duplex, intercom system. But if the TS was not willing to do the research to find the circuit, that is unfortunate. The first version I saw used octal tubes, which were current technology at that time. So the concept and the method have been around since the mid 1050's.

 

I suspect this gentleman wants to do it for himself, DIY is never going to be as good, IMO.

Most of us on this forum are electronics design engineers. So if we make something for ourselves, it is DIY. If DIY is never as good as bought, should we just give up our jobs?

 

A DIY Project quite often has the advantage of not having so much concern for
fitting into a particular market, or a particular cost-target requiring maximum profit.
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It appears to be a fairly high speed op amp.

https://www.ti.com/lit/ds/symlink/tlv2371-q1.pdf?ts=1747303362528&ref_url=https%3A%2F%2Fwww.google.com%2F

i want circuit digram not datasheet i allredy have that

 

i want circuit digram not datasheet i allredy have that

.
You haven't stated how You expect the Intercom operate, or in what type of environment.

How high is "up" ?????

Are You married to the Op-Amp that You provided a number for ?,
it's not a particularly great choice for a simple Intercom-System.

What will be Powering this Intercom ?

Do You have limitations as to the type of Cable connecting the 2 Stations ?
Cat-5-Cable is the most convenient and versatile choice, and is very inexpensive.

Do You want a Push-to-Talk-Button on either end ?, this is very important !!!

There are a large variety of configurations possible.
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What sort of "technician" IS the TS?? How much electrical or electronic knowledge and experience do they actually have????
Will the TS be able to follow a circuit schematic that is not a wiring diagram??
All but the very most basic, non-amplified, intercom circuits are a bit complex, with more than a single current loop. The full-duplex, non-switching scheme is probably beyond a lot of folks.

 

With the amount of detail that the TS has left us, there is no reason to spend any time thinking about this request.
Is the intercom to be "push to talk"?? Head-sets, or speakers?? Battery powered or sound powered or mains powered??
Should it be wired or wireless?? How much noise to be cancelled?? Multi-station or just a single pair??

 

i made this circuit i want to succes this working
but it same isuess it was not transfering voice to other come .

 

Do you have two of them connected together?? It is intended to only output the signal arriving from the other identical system.
The mode id indeed full duplex and so it will not amplify what enters by the microphone port.

 

It seems to me that the TS is looking for the functionality of a solid-state telephone hybrid, as used on the POTS networks.

https://en.wikipedia.org/wiki/Telephone_hybrid

 

THE CIRCUIT IN THE ATTACHMENT TO POST #14 IS what I was referencing earlier.
It is a valid concept and it works, BUT it more than doubles the complexity because every station must include that whole circuit.
What the TS is actually doing for the results they are getting is not at all clear. I await the answers.

 

i made this circuit i want to succes this working
but it same isuess it was not transfering voice to other come .

In this circuit which componends should use smd or through hole

 

How are you testing the circuit??? Do you have two of the assemblies completed and then connected to each other??
Please explain what you are doing that does not work.

 

How are you testing the circuit??? Do you have two of the assemblies completed and then connected to each other??
Please explain what you are doing that does not work.

I have completed that circuit on zero pcb and i make this two pics then i give both pcb supply of 10v to 12v then i connect audio line in between them , but when we speak on mic sound is not transfering to other side pcb it was sending back to the pcb on which mic we are speaking .