Can I use an LM386 Module to double the volume from an RCA audio output? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th April 2014, 07:00 AM   #1
diyAudio Member
 
Join Date: Apr 2014
Default Can I use an LM386 Module to double the volume from an RCA audio output?

Hi there,

I have limited knowledge when it comes to electronics, but enough to put together a basic project. Any help with my question would be greatly appreciated.

The project I'm embarking on is this: I intend to double the volume of an output (mono RCA from an old 1980s video camera) via a small amplifier, so that I can monitor the audio via a set of headphones as well as keep the same strength continuing on another line. The destination of this line from the camera will be a battery powered portable recording device, which weirdly but conveniently has a 2.2mm 5v 500ma power output cable. I intend to use this to power the amplifier.

My goal here is also to spend as little on the project as possible, which has led me to consider purchasing an LM386 module, listed here: http://r.ebay.com/ipJfVz
and use this as the amplifier - splitting the output to two different lines. One for headphones and the other for the audio out.

The order of the proposed system will be:
VIDEO CAMERA'S AUDIO OUT > LM386 MODULE (AMP WHICH CAN HOPEFULLY BE POWERED BY 5V 500ma) > HEADPHONES AND RECORDING DEVICE

The questions I have are:

1. is my power output from the portable recording device 5v 500ma too small or too great to run the LM386 module? If so, how could I deal with this to still use the power output from the recording device?

2. Where would I connect the female 2.2mm socket to on the LM386 device? I see GND GND IN and LINE labels on the unit, but aren't really clear on what these are indicating in relation to my audio input and power. Output from the unit appears clear enough.

As I said, any help would be greatly appreciated as it's early stages of the project and I'm open to suggestion.

Thanks

Last edited by trakaudio; 27th April 2014 at 07:01 PM. Reason: Fixed broken link
  Reply With Quote
Old 30th April 2014, 03:13 PM   #2
udok is offline udok  Austria
diyAudio Member
 
Join Date: Jul 2011
The data sheet of the LM386 says that the amplification is greater than 20. I don't know the chip and the the ebay link does not work anymore.
Perhaps it is better to build a discrete OPV circuit to do the gain amplification.
Udo
  Reply With Quote
Old 1st May 2014, 05:04 PM   #3
diyAudio Member
 
danielwritesbac's Avatar
 
Join Date: Nov 2007
You could do searches for "CMOY" projects.
__________________
Tools, Models & Software for DIYClipNipper boostLM1875 TurboPowerful TDA7293 kitTDA7294 pt2pt ♦ My post has opinion.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
PAM8403 Double Track Power Amplifier Module Volume Adjustment punchy Chip Amps 8 28th January 2014 11:43 PM
Promotion: Hi-end Volume Control Module,Ultimate Attenuator for Audio bbp Vendor's Bazaar 18 20th September 2010 03:25 PM
Endangered Audio - Gristleizer Module & New Module Line! endangeredaudio Vendor's Bazaar 0 5th March 2010 03:03 PM
RCA HC2000H module Maurice442 Chip Amps 0 9th October 2007 04:18 AM


New To Site? Need Help?

All times are GMT. The time now is 02:02 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2