(Nearly) Free Transformers! - 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 9th March 2004, 07:33 PM   #1
Stocker is offline Stocker  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Austin
Thumbs up (Nearly) Free Transformers!

A neighbor of mine had a sale to raise money for a missions trip...aka a garage sale. One of the things that ended up in the garbage was an OLD apple printer.

Aside from being nicely overbuilt like all old computer stuff was, it was way heavy compared to a modern unit. The reason... no SMPS. It has a 20V 3A, 10-0-10 1A (80VA) transformer. Just the thing when you need power for your next gainclone or whatever. I don't think I'll trust the (big) filter caps until they're tested though... Also it had a LOT of transistors to drive 2 steppers, with a load of small value 3W resistors and zeners by them... free. I did a quick search but didn't see any mention of this potential source of parts.



__________________
Jesus loves you.
  Reply With Quote
Old 9th March 2004, 08:42 PM   #2
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Default Re: (Nearly) Free Transformers!

Quote:
Originally posted by Stocker
OLD apple printer
Which one?

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 10th March 2004, 02:55 AM   #3
Stocker is offline Stocker  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Austin
Didn't even look!

Seriously, this thing only came out of the bin for 1/2-hour's worth of amusement taking it apart. I was paying so much attention to the outside of it that I ~barely~ noticed the rainbow-apple logo.

Sorry.

-edit-

*something* inside had a date of 1983 on it I think.
__________________
Jesus loves you.
  Reply With Quote
Old 10th March 2004, 06:51 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 Stocker
*something* inside had a date of 1983 on it I think.
had to be an ImageWriter or earlier then... was it very rectangi=ular box shape? the reason i ask is because i probably have a few of these kicking around.

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 10th March 2004, 10:29 AM   #5
Stocker is offline Stocker  United States
diyAudio Member
 
Join Date: Dec 2003
Location: Austin
aaaaaahhh. Yes, it may have been the most rectangular box of a printer I have ever seen. Unless my memory fails me, it had a black metal plate under the transformer, about 3x1.5, with at least one naked stepper motor sticking out as well, with one big knob for turning the rubber roller on the side. OH! the bottom comprised almost entirely a single removeable panel that covered the one big PCB, and I remember thinking how easy they must have been to service...when servicing computer equipment was actually the thing to do.

If they are not currently in service as a high-quality dot-matrix printer, why not break one open?
__________________
Jesus loves you.
  Reply With Quote
Old 10th March 2004, 12:06 PM   #6
diyAudio Member
 
Join Date: Dec 2003
Location: Sydney
Quote:
i probably have a few of these kicking around
Oh dear. (I have this problem too though not printers, but monitors! biggest one is 80cm screen!

heavy duty printers are also cool for linear sliding bushes, and hardened and ground shafts. Very cool if you like building mechanical things! I'll be using some of these sort of bits for my DIY dubplate cutting lathe! And if I ever get the time, a mini metalworking lathe!
  Reply With Quote
Old 1st September 2004, 10:45 PM   #7
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I just disassembled 2 ImageWriter IIs (the less boxy ones). Each produced a 28V 2.85A (80VA) trafo... real squat little units. Now just have to figure out how to take advantage of them. Also got some IEC female chassis mount, and common mode filters.

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

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
FREE FREE - Panasonic A310 DVD Player - FREE FREE Kane Williams Swap Meet 6 27th September 2008 02:35 PM
Two power transformers - free for local pickup (Seattle, WA) owdi Swap Meet 0 12th January 2008 07:40 PM
Free Isolation Transformers Ric Schultz Swap Meet 3 29th November 2006 09:34 PM
transformers and cooling elements for free (Belgium / Netherlands) hugobross Parts 4 27th January 2005 09:09 PM


New To Site? Need Help?

All times are GMT. The time now is 09:38 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