Go Back   Home > Forums > >

Chip Amps Amplifiers based on integrated circuits

Chip Amp Photo Gallery
Chip Amp Photo Gallery
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
Old 17th February 2021, 07:11 AM   #3381
chermann is offline chermann  Austria
diyAudio Member
 
Join Date: Jan 2017
Location: Vienna
Quote:
Originally Posted by Flappytango View Post
Thought I'd throw an oldie into the thread... My first amp build about 15 years ago. Simple internally, a gain clone chip amp kit.

Hi Flappy

nice housing...picture from inside available ?
  Reply With Quote
Old 20th February 2021, 08:35 AM   #3382
sthcoaster is offline sthcoaster  United Kingdom
diyAudio Member
 
Join Date: Mar 2016
Location: Vientiane, Lao PDR
Chip Amp Photo Gallery
Just finished Audiosector LM3875 monoblocks

More pics in relevant Audiosector forum

Last edited by sthcoaster; 20th February 2021 at 08:59 AM.
  Reply With Quote
Old 20th February 2021, 08:41 AM   #3383
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Jan 2006
Location: Victoria, Australia
Show the outside too.
  Reply With Quote
Old 20th February 2021, 08:57 AM   #3384
sthcoaster is offline sthcoaster  United Kingdom
diyAudio Member
 
Join Date: Mar 2016
Location: Vientiane, Lao PDR
Chip Amp Photo Gallery
Quote:
Originally Posted by mhouston View Post
Show the outside too.
More pics in the other thread link provided. Didnít want to load pics here as well.
  Reply With Quote
Old 20th February 2021, 10:11 PM   #3385
techtool is offline techtool  United States
diyAudio Member
 
Join Date: Dec 2012
Location: NJ
Default One of my first Amps

Inspired by Flappy's recent "oldie" post. Here's one of my first amp projects built in the early 70's. It's a mono integrated 18 watt amp based on the Signetics NE540L driver IC. The amp circuit came from a Popular Electronics magazine article from May 1971. Technically, it's not a pure Chip Amp since the 540 drives the two discrete bipolar transistors seen on the back. The pre-amp is a three transistor circuit that came from a book of projects. I had to buy a few of the parts but most were scrounged from junk TV chassis and the like, which explains all the odd sizes.

I made the case and brass knobs in metal shop at school.

Didn't even know this was still around until I was cleaning out my dad's basement one day. This is the project that started it all and led to a life long career in electronics. Not only that, the thing still works. Thanks for looking. Anyone else got one?
Attached Images
File Type: jpeg image0.jpeg (875.3 KB, 578 views)
File Type: jpeg image1.jpeg (830.7 KB, 206 views)
File Type: jpg image4.jpg (481.1 KB, 255 views)
  Reply With Quote
Old 20th February 2021, 10:52 PM   #3386
Jaytor is offline Jaytor  United States
diyAudio Member
 
Join Date: Oct 2019
@techtool - that is very cool. How old were you when you built this?
  Reply With Quote
Old 20th February 2021, 11:29 PM   #3387
techtool is offline techtool  United States
diyAudio Member
 
Join Date: Dec 2012
Location: NJ
Thanks Jay. Started it at 14, in a different chassis and finished like this at 16. This was my sound system, along with a cassette deck and homemade speaker, until I finished college.
  Reply With Quote
Old 28th February 2021, 01:34 PM   #3388
Flappytango is offline Flappytango  United States
diyAudio Member
 
Join Date: Jan 2004
Location: michigan
Quote:
Originally Posted by chermann View Post
Hi Flappy

nice housing...picture from inside available ?

here is one pic of the inside, pretty basic... I gave this amp to my nephew ~10 years ago (kind of regret it)..
Attached Images
File Type: jpg insidebot.jpg (94.1 KB, 240 views)
  Reply With Quote
Old 3rd March 2021, 06:07 AM   #3389
Puffin is offline Puffin  United Kingdom
diyAudio Member
 
Join Date: Feb 2006
Location: U.K
My, MyRef_C

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 13th March 2021, 02:45 PM   #3390
speaker is offline speaker  United States
diyAudio Member
 
speaker's Avatar
 
Join Date: Mar 2004
Location: USA
Quote:
Originally Posted by Sadface View Post

The idea here was an exercise in salvage and cost minimisation.
Surprised this isn't done more often, well done!

  Reply With Quote

Reply


Chip Amp Photo GalleryHide this!Advertise here!
Thread Tools

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


New To Site? Need Help?

All times are GMT. The time now is 06:50 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki