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Topic: "Sonic Death Ray" Phaser - a phase insurrection! (Read 3482 times)
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doc_drop
Posts: 246
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So, I was told this thing goes, "Swwwwwwwwwoooooooooooooooooooosssssssssssssssssshhhhhhhhhhhhhhh! " But, it sounds more like "WooooooowWoooooooooooooowWoooooow" to me. What's up with that?  Rick, I know the ROG Tri-Vibe has a sweet sine wave shaped LFO. Maybe you should look at that one? I am definitely going to build one of these. It is too sexy not to! |
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slacker
Posts: 2962
Ian M. - England
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That sounds great, I like the flangerish ringing in the first clip, almost like it's on the verge of self oscillating.
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igerup
Posts: 62
Ulrik, Malmö, Sweden
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wow, that sounds cool and far out.
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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I had another idea about how to implement parity modulation. What if we add a single phase stage in the regen path, not fixed, but modulated by a single FET driven by it's own LFO? That way the regen signal would get flipped over between in phase and out of phase thus creating parity modulation?
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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earthtonesaudio
Posts: 2633
Alex S.
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I had another idea about how to implement parity modulation. What if we add a single phase stage in the regen path, not fixed, but modulated by a single FET driven by it's own LFO? That way the regen signal would get flipped over between in phase and out of phase thus creating parity modulation?
Implementing that as a phase shift stage would be interesting; because the "polarity" would be frequency dependent. An alternative idea, somewhere between this and the LED/LDR method posted eariler, would be to modulate a JFET instead of the switch in a polarity reverser type circuit. |
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the way they left us all in the dark, they buried the sun so I carry the torch
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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Parity modulation LFO redesigned, perf'ed and tested, home-made vactrols rolled. And the main PCB arrived today from my PCB man.....  ......and some perf-porn for Slade:  |
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« Last Edit: August 05, 2010, 08:56:03 AM by frequencycentral »
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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PCB layout verified! Just hooked it up! This thing sounds awesome - even quieter than on breadboard. I can't wait to get it boxed up now......  |
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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The more observant amongst you will have noticed that the FETs are having sex. This is the secret of good phasing IMO.
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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Slade
Posts: 411
Fernando R. from Chile
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Fet-sex, ha?! You vouyerist cyborg!
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Brymus
Posts: 1132
Bryan G. - Somewhere in the Mohave Desert USA
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Not just sex. It looks like a full blown orgy  Are you sure El H didnt do that layout ?  |
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Shame on you for only bothering to read it once. Don't come back until you've read it the other 99 times. I'm so clever I might only have to read it 50 times........- Rick Holt
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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This is how I am proposing to implement the (quite complex) regen options:  The two regen inputs are on the left, one stage apart. The DPDT selects either parity modulation (from the parity modulation board) or fixed odd/even parity (selected by the SPDT). Then the regen pot and limiting resistor. Finally the 6 regen taps (each two stages apart) selected by the 1P6T rotary switch. |
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« Last Edit: August 13, 2010, 07:37:05 AM by frequencycentral »
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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Slade
Posts: 411
Fernando R. from Chile
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Hey, why don't you make the switch to select manual parity or parity modulation into a 3pdt stomp? Would be nice to have that option while you're playing  |
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frequencycentral
Posts: 3770
Rick, a.k.a Perfboard Overlord
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Hey, why don't you make the switch to select manual parity or parity modulation into a 3pdt stomp? Would be nice to have that option while you're playing Wow what a good idea, how could I not have thought of that?  |
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Murder One¿Por qué un baño de Slade tiene un grifo en cada extremo? ¡Para mantener el cloruro férrico parejo!
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Slade
Posts: 411
Fernando R. from Chile
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Because it's a young'n idea.
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Pages: 1 2 3 [4] 
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