Boost converters & amplifiers & batteries - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 18th March 2013, 01:21 AM   #1
diyAudio Member
Join Date: Mar 2012
Default Boost converters & amplifiers & batteries


I am getting ready to write an instructables tutorial (as well as posting it here), but I want to research a topic that has bugged me.

I have been part of a collective that merges numerous sound systems during outdoor events to make street dance parties. In this case, on bicycles. I have had such success with small tripath amps and SLA batteries that I would like to share my efforts with others that would like to join our sound system/dance parties.

Heres my problem. The wonderful little 2020 tripath amplifier is not very loud for outdoor sound. But the amazing tk2050 class d amps are quite loud. But 24v batteries are expensive and difficult for beginners.

My instructables project will be a pennier style sound system that sits on the rear bike rack of any bicycle, and with a $9 pair of used 1990 bookshelf speakers, the little 2020 tripath amps sound great but quiet. The same cheap speakers run on 24v (twin SLA batteries)and the tk2050 amp is extremely loud. And very useful making our street parties dance. Those amps can be had by the company Sure for $40 for a 2 channel, or knock offs for around $25. They sound wonderful and are nearly 4 times louder than any 12v amp I can find.

Heres the question. Can I use a voltage boost converter in line with a 12v battery with any success? Or can people help brainstorm on how I can simplify this situation. Twin batteries are expensive and difficult to charge, but mostly expensive.

I'd be willing to let go of some sound quality, for some easy, portable higher voltage.

Also, I wonder if a 100 watt cheap inverter could help out in any way.

Thanks so much, and sorry for the long winded question~

  Reply With Quote
Old 18th March 2013, 08:07 AM   #2
Elvee is offline Elvee  Belgium
diyAudio Member
Elvee's Avatar
Join Date: Sep 2006
Originally Posted by torclausen View Post
Heres the question. Can I use a voltage boost converter in line with a 12v battery with any success? Or can people help brainstorm on how I can simplify this situation. Twin batteries are expensive and difficult to charge, but mostly expensive.
Boostor is an example of such a converter. It is a cheap, low-tech charge pump converter that can be built with a few common components and delivers in excess of 150W of useful DC output.
It may not boast a 95% efficiency figure, but it is reliable and tolerant.

In its original version, it delivers +/-22V under load, but if you skip most of the multiplier stages, you will get about +/-12V out
. .Circlophone your life !!!! . .
♫♪ My little cheap Circlophone© ♫♪
  Reply With Quote
Old 24th August 2013, 01:53 PM   #3
Mondan is offline Mondan  Romania
diyAudio Member
Join Date: Mar 2010
hello. I seek to achieve the same thing as you.

First scheme is that:

but MOS transistor will be IRFZ44.
I want to get out of it 150W

The only thing I fear is that it will put more noise in the car circuit. Help me. Is it so?
I think that in classic push-pull scheme, like Elliott, 12V noise is lower.
I think a large value of noise in the car electrical system, can damage the car's onboard equipment

Over the windings of coil, I want to do another winding to have dual voltage.
  Reply With Quote
Old 25th August 2013, 08:05 AM   #4
diyAudio Member
Join Date: Feb 2011
hmm... if quality is not that mportant, then why not try one of those 2 ohm stable BTL car chipamps, and a transformator on its output ?
never did try this my self, but it should work, and it should provide quite a lof of juice.
  Reply With Quote


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
Remote control & batteries sattwa Digital Source 23 11th January 2013 05:09 PM
500/1 JL Amp drains my batteries flying143 Car Audio 2 29th October 2009 08:51 PM
Are there boost converters that can supply this much amperage? WAJIH Power Supplies 4 22nd October 2009 02:10 AM
using nimh or nicad batteries for sonic t amp. michelevit Chip Amps 7 6th January 2006 12:03 AM
SLA batteries for UcD amp PS Paul Ebert Class D 0 16th November 2004 04:53 PM

New To Site? Need Help?

All times are GMT. The time now is 09:47 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2