Home › Forums › The Lounge › phase shift oscillator?
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August 20, 2010 at 9:57 pm #80635friedjesseradioMember
has anybody made one?
August 21, 2010 at 12:34 am #111003julianModeratorWhat do you mean exactly?
August 25, 2010 at 5:08 pm #111089friedjesseradioMemberhave you made a phase shift oscillator?
August 25, 2010 at 8:54 pm #111098companymanParticipantclearly…the phase shift oscillator guantlet has been thrown down.
August 27, 2010 at 2:45 am #111114julianModeratorMaybe I should be clearer:
By phase shift oscillator, are you saying phaser?
I’ve never built a phaser, but I don’t think it would be that difficult. They’re rather simple. Usually just an oscillator with a bunch of allpass filter stages and a feedback circuit.
August 28, 2010 at 9:29 pm #111133friedjesseradioMemberno, i mean an oscillator. phaser schematics look kinda difficult to me.
August 29, 2010 at 5:47 am #111135Mr.GrimMemberdo you have the part list for this schematic? im sure i got them all layin around, ill whip one together real quick and let you know!!
August 29, 2010 at 8:53 pm #111143friedjesseradioMemberthats the thing. (almost) all of the schematics for it i find have no valves for the components but they do have a mathematical formula which can determine values, i do beleive.
i just found this website with a buncha different things you can try for it. i dont understand all of it and of course i dont want to read.
http://www.aikenamps.com/PhaseShiftOscillators.html
the other day, i found this one but i was on another computer and you need java to see it so it may be the wrong one
http://www.falstad.com/circuit/e-phaseshiftosc.htmlAugust 29, 2010 at 10:30 pm #111147julianModeratorYou can make an oscillator with a 555 timer IC.
There a are a couple simple oscillators here:
August 30, 2010 at 1:01 am #111148friedjesseradioMemberi looked at the site. some really cool stuff on there! whats a 555 timer ic? ic is integrated circuit right?
September 12, 2010 at 7:09 am #111367ExplorerMemberQuote:i looked at the site. some really cool stuff on there! whats a 555 timer ic? ic is integrated circuit right?Okay, now I have to ask *you* a few questions:
Where are you curious about whether someone else has built one? Do you have questions about its use?
Do you have an application for it, and therefore are thinking of building it?
Do you have any idea what it’s normally used for, or is this similar to someone who reads about a device, and decides it would be good to have one, even if that person isn’t clear what it does?
Given the following comment…
Quote:i just found this website with a buncha different things you can try for it. i dont understand all of it and of course i dont want to read.…it seems that you’re not familar with basic effects or ciruitry. That’s okay, since everyone has to start somewhere. However, one does have to *start* somewhere.
Given what you’ve linked to, you might consider building a tremolo unit. There are kits for such pedals, so you’ll gain a bit of understanding, and can then decide if you want to go further.
Of course, if it’s just idle curiosity, and you don’t want to do the research yourself… then at least spell out what you want, so others can decide if they want to invest their own time to make up for time you don’t want to waste on your own question.
September 12, 2010 at 2:49 pm #111371julianModeratorIC means integrated circuit, yes.
September 14, 2010 at 4:55 pm #111413friedjesseradioMember@explorer – i asked about a phase shift oscillator because i want to build one just for fun and also so i dont have to play guitar if im gonna test out a home made pedal. i ask here because on the schematics ive found for a phase shift oscillator, i havent seen values for for resistors or capacitors. i have made a pedal before but i am still learning day by day. if you can help, it would be extremely appreciated.
September 15, 2010 at 1:31 am #111424julianModeratorIf you just want something to test out pedals with without playing guitar, build the drone oscillator circuit on the site I linked you to.
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