electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
Live streaming at radio.electro-music.com

  host / artist show at your time
  Various Artists ~ 2014 Autumnal Equinox ~ live streaming radio ~
Please visit the chat
 Forum index » DIY Hardware and Software » Thomas Henry designs
Thomas Henry Platinum Power Supply
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
crashlander42



Joined: Oct 21, 2006
Posts: 292
Location: Orlando, FL (US)

PostPosted: Mon Jul 02, 2007 9:04 pm    Post subject: Thomas Henry Platinum Power Supply
Subject description: Stupid substitution question
Reply with quote  Mark this post and the followings unread

I'm building the Thomas Henry power supply http://www.nutsvolts.com/~downloads/January%201998%20Thomas%20Henry%20-%20Power%20Supplies%20for%20Electronic%20Music.pdf . I don't have any 1N4002 diodes. I have 1N4004, 1N4007, and 1N4001. Are any of these suitable replacements. I've never had to substitute a diode, so I'm not really sure what to look for. I hate asking questions like this, but I'm stumped. Thanks in advance for your help.
_________________
When they plug me in the lights go down in Hong Kong.

http://www.myspace.com/isaciongun
http://www.youtube.com/user/Crashlander42
My DIY stuff Flickr
Back to top
View user's profile Send private message
fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
Audio files: 23

PostPosted: Tue Jul 03, 2007 1:09 am    Post subject: Reply with quote  Mark this post and the followings unread

almost any higher rated diode would do, i guess. 1N4001 would be fine for this design...
_________________
Posted Image, might have been reduced in size. Click Image to view fullscreen.
cheers,
matthias
____________
fonitronik at
FlickR (pix) / SoundCloud (sounds) / YouTube (vids) / Vimeo (vids) / facebook (news)
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Randaleem



Joined: May 17, 2007
Posts: 456
Location: Northern CA, USA

PostPosted: Tue Jul 03, 2007 2:23 am    Post subject: Re: Thomas Henry Platinum Power Supply
Subject description: Stupid substitution question
Reply with quote  Mark this post and the followings unread

Hi,

Here's a datasheet for the 1n400x series:

http://www.fairchildsemi.com/ds/1N/1N4001.pdf

You can see that they are all 1Amp diodes and the only thing that changes is the reverse voltage breakdown. 1N4001 is 50V, 1N4002 is 100V, and so on.

Your 1N4004, and 1N4007's will work and each exceeds the designer's original spec.

As Fonik mentioned, you could probably get by with the 1N4001's also . But this is only a 50V diode, and often a diode has to accomodate double the "apparent" voltage you see in the circuit. I'm not immediately familiar with Thomas's platinum power supply, so I can't say for sure how close you'd be if you used the 4001's.

But since you have the 4004's and 4007's, I suggest using either of those and you have no worries.

EDIT: I just looked at the circuit online. I'd use the 04's or 07's for the +/-15V areas. The schematic shows a 36VAC transformer. That 36V AC becomes 50.9 volts when rectified and filtered (1.414 x 36). More or less as your input Line power varies over the course of a day.

Further Thomas adds (first column on page9):"By the way, all of the rectifiers in this circuit should be rated for a peak inverse voltage of at least 100V and a current capability of 1A. The 1N4002 is a good choice here."

The 5V supply has a 9VAC Transformer. 1.414x9 is well within the 50V rating of a 1N4001. You can use your 1N4001's for the 5V part if you want.


Randal


crashlander42 wrote:
I'm building the Thomas Henry power supply http://www.nutsvolts.com/~downloads/January%201998%20Thomas%20Henry%20-%20Power%20Supplies%20for%20Electronic%20Music.pdf . I don't have any 1N4002 diodes. I have 1N4004, 1N4007, and 1N4001. Are any of these suitable replacements. I've never had to substitute a diode, so I'm not really sure what to look for. I hate asking questions like this, but I'm stumped. Thanks in advance for your help.
Back to top
View user's profile Send private message Send e-mail
crashlander42



Joined: Oct 21, 2006
Posts: 292
Location: Orlando, FL (US)

PostPosted: Tue Jul 03, 2007 6:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks! That's exactly what i was looking for. thanks
_________________
When they plug me in the lights go down in Hong Kong.

http://www.myspace.com/isaciongun
http://www.youtube.com/user/Crashlander42
My DIY stuff Flickr
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [4 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Thomas Henry designs
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use