Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Chip Amps Amplifiers based on integrated circuits

chip amp idle current
chip amp idle current
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 28th December 2004, 02:09 PM   #1
maylar is offline maylar  United States
diyAudio Member
Join Date: Jun 2003
Location: Connecticut
Default chip amp idle current

How much power do MOSFET chip amps draw with no load? I'm talking about the bridged circuits that get used in typical car stereo's (14 v supply).

Some head units get mighty hot when running a full set of 4 speakers. I'm curious how much heat would be generated if the speakers were left unconnected.

Any rules of thumb, or specs on typical chips?
  Reply With Quote
Old 28th December 2004, 02:30 PM   #2
Stuart Easson is offline Stuart Easson  United Kingdom
diyAudio Member
Stuart Easson's Avatar
Join Date: Oct 2002
Location: Santa Cruz, CA
chip amp idle current Send a message via MSN to Stuart Easson Send a message via Yahoo to Stuart Easson
Default very little


The typical amp in a headunit is class a/b and might use 50-75ma per channel with no load. Which should make it stone cold...

  Reply With Quote
Old 29th December 2004, 03:25 PM   #3
maszto is offline maszto  Poland
diyAudio Member
Join Date: Dec 2004
Location: dreamland
The mosfets are mostly higher biased than the bipolar transistors (it could be 100 -150 mA) with no load.
  Reply With Quote


chip amp idle currentHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What's the Idle Current of the F5 Power Amp NV&H Pass Labs 56 3rd February 2010 10:56 AM
nad 3020b idle current reddish75 Solid State 4 4th July 2008 02:46 PM
idle current for bryston 4B Danielll Solid State 2 3rd October 2005 05:25 PM
XM-1502SX Idle Current sdoom Solid State 1 9th July 2004 07:35 AM
SMPS Idle Current cm961 Parts 2 20th February 2004 05:56 AM

New To Site? Need Help?

All times are GMT. The time now is 02:54 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio