Anyone know what these are? - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

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 28th August 2003, 02:14 AM   #1
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Default Anyone know what these are?

I ran across some of these shiny semi-conductors... i figured it would be quicker to ask here than try to figure out where to look on the net.

dave
planet10/lost when it comes to SS
Attached Images
File Type: jpg semis.jpg (33.6 KB, 343 views)
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 28th August 2003, 02:47 AM   #2
SY is offline SY  United States
diyAudio Moderator
 
SY's Avatar
 
Join Date: Oct 2002
Location: Chicagoland
Blog Entries: 1
Wow, that '441 is even older than me. PNP, germanium, 40V Vces, 150W dissipation.
__________________
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
  Reply With Quote
Old 28th August 2003, 02:54 AM   #3
Duo is offline Duo  Canada
diyAudio Member
 
Duo's Avatar
 
Join Date: Jun 2002
Location: Victoria, BC, Canada
Send a message via ICQ to Duo
I have a whole bunch of those big round Ge transistors.
I'm going to make some sort of quasi complimentary amp with them when I get time.
__________________
-- Duo, W1ngs, VA7MON, and lesser known handles. --
-- http://www.w1ngselectronics.com -- My Work and Projects --
  Reply With Quote
Old 28th August 2003, 02:59 AM   #4
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by Duo
I have a whole bunch of those big round Ge transistors.
I'm going to make some sort of quasi complimentary amp with them when I get time.
This example came from Nanaimo...

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 28th August 2003, 04:03 AM   #5
Duo is offline Duo  Canada
diyAudio Member
 
Duo's Avatar
 
Join Date: Jun 2002
Location: Victoria, BC, Canada
Send a message via ICQ to Duo
Interesting... Mine actually came out of a power supply that I believe was originally for a UNIVAC computer. I've used the old chassis for my next project, the 900W per channel amp.

The transistors must have been the very best of their time, especially with their current and power ratings. Mine will to 30A but they are a slightly different type from yours.
__________________
-- Duo, W1ngs, VA7MON, and lesser known handles. --
-- http://www.w1ngselectronics.com -- My Work and Projects --
  Reply With Quote
Old 28th August 2003, 06:41 AM   #6
diyAudio Member
 
JOE DIRT®'s Avatar
 
Join Date: Apr 2003
Location: Brantford, ON
oohhhhh..those are older than the DIRT
  Reply With Quote
Old 28th August 2003, 11:55 AM   #7
diyAudio Member
 
Pjotr's Avatar
 
Join Date: Nov 2002
Location: Netherlands
Hi, here is another 2N441:

Click the image to open in full size.

My dad fiddled an “electronic ignition” together with these for his 2 stroke DKW long time ago. He also used a Siemens AD3 for it. But for nowadays audio maybe if your audio bandwidth is limited to old AM standards

Cheers
  Reply With Quote
Old 28th August 2003, 12:00 PM   #8
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Anyone who want to see my AD161/162? I have tears in my eyes My childhood is passing by.
__________________
/Per-Anders (my first name) or P-A as my friends call me
Tube Buffered Gainclone in work |Thread ||
  Reply With Quote
Old 28th August 2003, 12:00 PM   #9
paulb is offline paulb  Canada
diyAudio Member
 
Join Date: Jun 2001
Location: Calgary
Those big Ge transistors were used as the output stage of car radios, even when the rest of the radio used vacuum tubes. Thus the Delco / GM brand.
  Reply With Quote
Old 28th August 2003, 03:12 PM   #10
Duo is offline Duo  Canada
diyAudio Member
 
Duo's Avatar
 
Join Date: Jun 2002
Location: Victoria, BC, Canada
Send a message via ICQ to Duo
Yeah, I have a few 441's actually. I've never seen them used in a radio with tubes. But I've seen many radios with just solid state using a 441 for the output... Lol, it was at least class A, you have to give it that.

I think if they're pushed hard enough one could get respectable bandwidth out of them. I've seen some circuits that get amazing bandwidth out of some really slow old transistors. Transistors that could almost pass as 3pin caps!
__________________
-- Duo, W1ngs, VA7MON, and lesser known handles. --
-- http://www.w1ngselectronics.com -- My Work and Projects --
  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 12:09 AM.


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