Update 2014-12-23: Savvas @ the tagboardeffects forum was kind enough to share a verfied vero layout for this one. :) Thanks alot! Original thread here. I added the vero layout to the bottom of the post. Here is a new original design that I have been working on for some time. It's a Pulse Width Controlled phaser that uses a CMOS switch as variable resistors. The main advantage to this approach is that you don't need to match JFET transistors or LDR/Vactrols. I hope you like it! :) Read about my progress, build reports, possible mods ect: http://www.diystompboxes.com/smfforum/index.php?topic=108823.0
26 Comments
John
12/2/2014 11:02:54 pm
Please, please post a vero layout for the Parasite Phaser. Thank you so much for your site.
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12/25/2014 01:33:06 am
Hi John
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clockman
8/10/2015 01:58:52 am
just finished the vero layout. Verified. works very well, has a small drop in overall volume compared to bypass signal. Great design, thank you so much for offering your work to the public. 9/21/2015 10:08:01 am
hi Fredrik,
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9/22/2015 11:59:49 pm
Hi George,
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9/23/2015 01:21:36 am
Hi Fredrik,
John
9/23/2015 05:59:53 pm
Is the double link (blue circle) at the very bottom supposed to be connected to another link, or is that a mistake. Thanks
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John
9/24/2015 12:03:48 pm
Disregard my previous post. I just built it and it sounds fantastic. No volume drop on mine. I used 470k in place of 330k for slower speeds.
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9/24/2015 03:42:52 pm
Sorry that I did not reply earlier.. busy day. :) I'm glad to hear that you like it. :) cheers! / Fredrik
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1/26/2016 10:29:24 am
Hi Equis,
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Equis
1/30/2016 08:35:13 am
Thanks for the reply!!! It is really annoying the ticking. I built it in a PCB .
equis
1/30/2016 09:13:27 am
i couldn't solve the problem yet. It is a really good sound pedal , Im going crazy! 1/30/2016 03:21:47 pm
Hi Equis,
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Aisha
10/2/2016 04:57:53 pm
I have built the etched PCB version. Great-sounding phase! The ticking is very hard to get rid of. I had best results with a TL022 for IC5. I originally had a TL062 in there but the ticking was madness. The rate seemed slower with the TL022. I tried 330k, 470k and 680k resistors with both op amps. The variation seemed more extreme with the TL062. I like the rates I can get with the TL062 but with that extreme ticking, I ended up sticking with the TL022.
Steven
2/11/2016 05:37:51 pm
Any chance we can get a full version of the artwork on the pedal?
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3/9/2016 03:25:45 am
Hi Steven,
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timothy
3/9/2016 05:34:01 pm
I built the corrupter v1.1 and the fuzz section works and sounds really good but there is no ring modulator sound. the frequency control does not work. I used a CD7040BE instead of a CD7040 could that be the issue???
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3/14/2016 06:21:51 am
Hi Timothy,
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Serhat
9/25/2019 03:08:43 pm
hello I did the signal as shown by downloading the engraved pbc version of the parasite phaser from your site but I have a problem adjusting the trimpot phaser what causes the bad stone phaser circuit to receive a manual phaser sound similar to the manual phaser circuit? I think the integration of Tl074 is broken, why can't I get automatic phaser sound? I used 1 uf 16 volt electrode capacitor instead of 1 uf on the output, could this be a problem?
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Bonginator
2/4/2023 03:11:46 am
Dope phaser, Freppo u r king. thanks for sharing
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2/7/2023 03:47:46 am
All your hard work is much appreciated. Nobody can stop to admire you. Lots of appreciation.
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2/11/2023 01:16:35 pm
I wanted to thank you for this excellent read!! I definitely loved every little bit of it. I have you bookmarked your site to check out the new stuff you post.
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2/25/2023 11:54:56 pm
Friend, this web site might be fabolous, i just like it.
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Michailovic
4/24/2023 11:37:53 am
Hello, Great phaser. However it's not exactly unity when engaged. How would I tame it down to not boost the signal when engaged?
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