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 14th May 2011, 02:13 PM   #1781
diyAudio Member
 
Join Date: Jul 2008
Location: santa clara, CA
Quote:
Originally Posted by CRST View Post
I was thinking that for my next system / remote, I'd add the ability to display (volume, CD tracks, station, etc) on the remote itself. You can get relatively inexpensive TFT panels now. Carve a nice case, a little firmware, rechargeable batteries, and perhaps I have something.
otoh, smart phones and tablets are the 'new hot thing' these days.

I would consider some way to have a web back-end be the way into your system (or one way in). on my project I picked simple rs232 serial and have a simple protocol for the remote to send cmds and queries in via serial. this works for both the xbee style remote AND also an apache webserver on some linux box, somewhere (could even be a one board plug-style/marvell ARM board).

then you can spend the rest of your time doing android and ios apps for your stereo (I'm only half kidding, too).

I think all my new projects will be split 'in half' and have a serial connection between client and server, just to be able to have multiple management ways 'in' to the box. IR is cheap and easy; but a serial back-end gives a lot of fancy 2-way utility.
__________________
My Photostream:http://www.flickr.com/photos/linux-works/
  Reply With Quote
Old 15th May 2011, 06:57 PM   #1782
diyAudio Member
 
Professor's Avatar
 
Join Date: Sep 2005
Location: Electrostal, Moscow region
Hi! My PA-100 prototype with separate power supply =)
Attached Images
File Type: jpg resizefront.jpg (86.6 KB, 1750 views)
File Type: jpg resizerear.jpg (109.7 KB, 1694 views)
File Type: jpg resizerear2.jpg (111.1 KB, 1617 views)
File Type: jpg resizetop.jpg (121.9 KB, 1602 views)
File Type: jpg resizetop2.jpg (135.0 KB, 1548 views)
File Type: jpg resizetop3.jpg (125.4 KB, 475 views)
File Type: jpg resizeselector.jpg (108.4 KB, 430 views)
File Type: jpg resizetop4.jpg (112.7 KB, 399 views)
File Type: jpg resizetop5.jpg (123.6 KB, 410 views)
  Reply With Quote
Old 16th May 2011, 02:47 PM   #1783
frank1 is offline frank1  United Kingdom
diyAudio Member
 
Join Date: Apr 2006
Location: Devon UK
Quote:
Originally Posted by Professor View Post
Hi! My PA-100 prototype with separate power supply =)
It's really nice to see a truely DIY project using your own PCB's etc.
I always hate to see heat-sinks inside boxes though :-(
Looks like a sealed diecast box?

Frank
  Reply With Quote
Old 16th May 2011, 02:57 PM   #1784
diyAudio Member
 
Professor's Avatar
 
Join Date: Sep 2005
Location: Electrostal, Moscow region
Quote:
Originally Posted by frank1 View Post
It's really nice to see a truely DIY project using your own PCB's etc.
I always hate to see heat-sinks inside boxes though :-(
Looks like a sealed diecast box?

Frank
Hi! Yes this is aluminium diecast box. Heatsinks are densely pressed to box walls and the box serves as heatsink continuation with the big area. I can drill holes but i dont like dust in the case =)
  Reply With Quote
Old 17th May 2011, 08:04 AM   #1785
diarav is offline diarav  India
diyAudio Member
 
Join Date: Dec 2004
Location: Bangalore India
Quote:
Originally Posted by Professor View Post
Hi! My PA-100 prototype with separate power supply =)
Great Build! I like the fact that the PCBs are built on the volume control, source selector, and the RCA inputs - ensures neat wiring. May I know what chip you are using on the RCA inputs for source selection? Or is it a relay?
__________________
Regards,
Din

Last edited by diarav; 17th May 2011 at 08:07 AM.
  Reply With Quote
Old 17th May 2011, 08:55 AM   #1786
diyAudio Member
 
mindutis's Avatar
 
Join Date: Apr 2008
Location: Sweden
yeah, what solid state relay can hold up to 2V?
  Reply With Quote
Old 17th May 2011, 02:50 PM   #1787
diyAudio Member
 
Professor's Avatar
 
Join Date: Sep 2005
Location: Electrostal, Moscow region
Quote:
Originally Posted by diarav View Post
Great Build! I like the fact that the PCBs are built on the volume control, source selector, and the RCA inputs - ensures neat wiring. May I know what chip you are using on the RCA inputs for source selection? Or is it a relay?
This is 12V reed relay EDR302A1200
  Reply With Quote
Old 17th May 2011, 03:29 PM   #1788
diyAudio Member
 
Professor's Avatar
 
Join Date: Sep 2005
Location: Electrostal, Moscow region
Big photos there ?????????? - mymegahobby Jimdo-Page!
  Reply With Quote
Old 20th May 2011, 01:51 PM   #1789
speaker is offline speaker  United States
diyAudio Member
 
speaker's Avatar
 
Join Date: Mar 2004
Location: USA
Quote:
Originally Posted by diarav View Post

Great Build! I like the fact that the PCBs are built on the volume control, source selector, and the RCA inputs - ensures neat wiring.
I agree, the layout is well executed.

  Reply With Quote
Old 23rd May 2011, 07:54 PM   #1790
Oery is offline Oery  Indonesia
diyAudio Member
 
Join Date: Jan 2009
Send a message via Yahoo to Oery
Default My little HybridAMP

Here's my little project

On power board.
IC: LM3886T
Resistor: (all) Takman 1/2w Metal Film
Capacitor Elc: 3x 100F/50V Elna Cerrafine, 2x 22F/50V Nichicon
Capacitor: 2x 100nF/250V Wima MKP10
Capacitor Coupling (DC Blocking): 2x 1.5F/400V MKP Solen (Original)
Capacitor Power Supply: Nover AudioGrade 4x 6800F/50V
Potentiometer: Alps Blue Beauty
PCB: XY HiFi (Dual Layer Fiber Board)

On tube buffer board (based MF X10D)
Tube: 6BQ7 + Octal Socket
Resistor: Takman Carbon, Allen Bradley, Riken, Standar Metal Film (1% Tolerance)
Capacitor Elc: 2x Panasonic FC Blue 2200F/25V, 8x Nichicon Gold 1000F/35V, 2x Nichicon Muse BP 10F/50V
Capacitor: 4x ERO 220n/250V MKC1862, 2x Soshin 220pF Silver Mica
Capacitor Coupling (DC Blocking): 2x Siemens 3.3F/100V
Capacitor PowerLine Filter: RIFA X2 100nF/275VAC
Diode: 5x Vishay BYV26E Ultra Fast Avalanche Sinterglass Diode
PCB: Lite Audio (Single Layer Fiber Board)

Hope you like it......
Attached Images
File Type: jpg lm3886_1.jpg (79.5 KB, 652 views)
File Type: jpg lm3886_2.jpg (76.8 KB, 762 views)
  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



New To Site? Need Help?

All times are GMT. The time now is 08:03 PM.


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