quasi complementary amplifier 2n3055 pcb - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

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 20th November 2016, 07:24 AM   #1
Legion is offline Legion  Poland
diyAudio Member
 
Join Date: Oct 2016
Default quasi complementary amplifier 2n3055 pcb

I have a lot of old 2N3055 transistor so I wanted to build a quasi complementary amplifier, I searched a lot, but coudn't find a good pbc layout. So does anybody have a pcb layout for it ?
  Reply With Quote
Old 20th November 2016, 05:45 PM   #2
diyAudio Member
 
indianajo's Avatar
 
Join Date: Jan 2010
Location: Jeffersonville, Indiana USA
The Apex AX6 works. PCB layouts are in this thread: Retro Amp 50W Single Supply
With real homotaxial process (1968-1975?) parts, don't exceed about 60 v rail voltage (no minus voltage on this schematic). Unless you test for acceptable leakage current with base shorted to emitter at what higher voltage you choose. Newer parts can be tougher at higher voltage than the original design parts.
Use a regulated power supply rail. AX6 doesn't have a lot of constant current transistors that reject power supply variation. You can use a 2n3055 as a series pass power supply regulator, but you'll need a booster transistor with a heat sink (TO220 or TO5) to sense the zener diode and drive the base of the 2n3055. Or if you're ordering a box of something, a couple of parallel TIP142 darlingtons are ~$1 each, the emitter current sharing .33 ohm resistors are 5 for $1. I used five TIP142 parallel for two channels of output transistors, but I listen to classical music and like a lot of current occasionally for the cannon shots or drum hits.
__________________
Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,1.3K, SP2-XT's, T-300 HF Proj's, Steinway console, Herald RA88a mixer, Wurlitzer 4500, 4300

Last edited by indianajo; 20th November 2016 at 05:57 PM.
  Reply With Quote
Old 20th November 2016, 05:57 PM   #3
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
There is BX100
Current Dumping Amplifier
  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
2N3055 inside - commercial famous amplifier models, quasi complementary power output tiefbassuebertr Solid State 246 5th December 2016 05:12 PM
How to identify a quasi-complementary amplifier? motbuddy Solid State 48 20th August 2016 07:01 AM
Op Amp buffer/amplifier, quasi-complementary, need advice. wponline Solid State 11 26th September 2012 02:22 AM
Quasi complementary outputs in a full complementary circuit xeclipse Solid State 12 11th January 2011 08:35 PM
Quasi complementary outputs in a full complementary circuit xeclipse Solid State 0 26th December 2010 08:08 PM


New To Site? Need Help?

All times are GMT. The time now is 12:38 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
Wiki