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
  EdisonRex Edison's Electronic Review
Please visit the chat
 Forum index » DIY Hardware and Software
.
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
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
seaweedfactory



Joined: Apr 12, 2006
Posts: 61
Location: Earth

PostPosted: Sun Dec 16, 2012 2:52 pm    Post subject:  . Reply with quote  Mark this post and the followings unread

.
Last edited by seaweedfactory on Sun Jul 06, 2014 7:23 pm; edited 2 times in total
Back to top
View user's profile Send private message
fonik



Joined: Jun 07, 2006
Posts: 3755
Location: Germany
Audio files: 23

PostPosted: Fri Dec 21, 2012 4:49 pm    Post subject: Reply with quote  Mark this post and the followings unread

the clock enable is ON when tied to ground, and OFF when high (inhibit). when i take a look at the datasheet then i see that the clock enable is nothing but a non-inverted input to an AND gate, where the clock is fed inverted.
the ken stone circuit shows comparators. this is good, because the 4017 need more than 1/2 of the supply voltage to clock (2/3 IIRC?).

so i cannot see why a comparator shouldn't work, all the more when you used a pulldown resistor. just use the same configuration as for the clock's comparator. (or am i missing something?)

_________________
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
seaweedfactory



Joined: Apr 12, 2006
Posts: 61
Location: Earth

PostPosted: Fri Dec 21, 2012 5:12 pm    Post subject: Reply with quote  Mark this post and the followings unread

.
Last edited by seaweedfactory on Sun Jul 06, 2014 7:23 pm; edited 1 time in total
Back to top
View user's profile Send private message
Dragon's Lair



Joined: Dec 29, 2006
Posts: 185
Location: Nakusp BC, Canada
Audio files: 1

PostPosted: Sat Dec 22, 2012 12:11 pm    Post subject: Reply with quote  Mark this post and the followings unread

When you use the TL072 with a single supply, you create a "virtual" ground that is half of your supply voltage, so the op amp never actually goes to ground, try using an op amp that is designed for single supply use like the LM358 and see if that helps.
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
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
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