Browse through a total of 9 LM Circuits and projects. In this intercom schematic, the 8 ohm speakers is used as microphone and listening speaker. The circuit mentioned here is a small easy to build Intercom circuit using one LM IC one 2N transistor and few other components. LM is a very. 26 Jan Simple Intercom Circuit using which you can communicate two ways locally The main concept behind the circuit is the use of LM audio.

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Design Guides Pmods — How to get started? Intercom using lm386 speaker will be used in set-1 and the other in set-2 as show in the circuit diagram. Useful Raspberry Pi Projects. The preferred power supply for the circuit is 6V or above but the circuit also works with regulated 5V from IC not uing in the diagram.

Intercom Using LM386

I concur, my schematic skills are not so clever. Please enter your name here. Is the 5 meters distance, line-of sight? Apr 26, 3.

Intercom circuit using lm386

The intercom using lm386 is adjusted by potentiometer VR1. It could be taking that long to charge up. It is important that there is no acoustical feedback between the microphone and the loudspeaker on both the sides.

The Intercom using lm386 switch will connect only one ijtercom to the amplifier at a time. Apr 26, 4. Initially you can experiment with usjng circuit by blowing air into the microphone and check if the speaker produces some noise.

Intercom using lm386 have entered an incorrect email address! Any ideas what might be causing this lag? These are just like landline phones but, you do not need an operator, the voice received from one end will be directly transferred to the receiver iintercom the other end. LM datasheet circuit problem Posted by eljeffe in forum: The main concept behind the circuit is the use of LM audio amplifier which receives the audio signal from microphone, amplifies it and plays it on the intrecom.


Intercom using lm386 now both the speakers will always be active to keep things simple, so do not worry if you hear yourself on the speaker on your end.

Keep the interconnection cables as intercom using lm386 as possible—preferably shorter than 10 metres. Apr 26, 2. Automatic Bike Turning Indicator. Do you already have an account? As the gain of each channel is not very high, the probability of acoustical feedback is low.

intercom using lm386 You can also upgrade this project by adding another SPDT switch to turn of the speaker on intercom using lm386 side when you intercom using lm386 talking. The circuit also works with carbon microphones or other high-level and low-impedance microphones.

Very-large-scale integration VLSI is the technology of creating an integrated circuit IC by blending billions of transistors Mar 14, 19, 5, Now place the SPDT switch in a position and speak into the respective microphone your voice should be echoed on both the speakers. Most cheap intercoms use “press button to talk” or half-duplex “voice switching” to avoid feedback. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


That is a duplex design so you would need to use to two transmitters and receivers on separate frequencies. Sign up using Email and Password. Apr 26, 6.

Intercom Using LM | Electronics For You

For power supply, you can use an AC-DC wall adaptor, dry batteries or rechargeable intercom using lm386. I will report back, thanks Mark. Quote of the day. Diploma Engineer Trainee 27 July Many thanks Mark, Intercom using lm386 have a go inteecom changing the values tomorrow. The way the LM is drawn, as the package outline, we have no idea of what connects to each of the pins.

Your schematic needs some work.

More information about text formats. Does ‘mic’ mean micro Farad? Similarly place the intercom using lm386 in opposite position and talk into the other microphone and check if you can hear the sound on the speakers. Aug 22, 17 2.

The potentiometer can be replaced with a preset of the same value because the volume need not be adjusted frequently. If a higher dynamic intercom using lm386 is needed, the power supply should be 9V or even 12V. In case of acoustical feedback, lower the volume of the amplifier and change the positions of the microphones and intercom using lm386.

All Time Fav Videos! Use a shielded cable for connecting the microphone to the circuit. Please enter your comment!