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2007-01-05 by Ben Stuyts
On 4 Jan 2007, at 23:00, analog hell wrote: > I know this is supposed to be an easy part to find, but i'm having > trouble finding a relay that fits the PSU delay boards. > > I've twice ordered from UK suppliers (RS & Rapid) what I thought would > be the correct part only to find
2007-01-04 by analog hell
Hey all, I know this is supposed to be an easy part to find, but i'm having trouble finding a relay that fits the PSU delay boards. I've twice ordered from UK suppliers (RS & Rapid) what I thought would be the correct part only to find both times they don't bloody fit!! Can any U
2006-12-27 by Future Image
Hi, Just to let you guys know, I've uploaded a Word document of the CGS PCB prices as of December 2006 in British Pounds. The prices include shipping costs ( x 1.02 + $3). Thanks, Future Image.
2006-12-22 by peng3002
Thanks all of you for replying. The third one I'm building is going to be for sale. I was hesitant because of the scratchy res pot. Seems like it's the norm, so I won't beat myself up trying to fix it. Thanks, peng --- In cgs_synth@yahoogroups.com , sasami@... wrote: > > The solu
2006-12-22 by peng3002
--- In cgs_synth@yahoogroups.com , "Gerald Stevens" wrote: > > Hello. > > For Ken's rev 2 circuit, change the 10uF cap before the TL071 to 100 nF. > This is part of a high-pass RC "filter" with a cutoff of 1/(2piRC) > = .15Hz! No need to pass such low frequencies! At 100 nF, we g
2006-12-22 by Gerald Stevens
Hello. For Ken's rev 2 circuit, change the 10uF cap before the TL071 to 100 nF. This is part of a high-pass RC "filter" with a cutoff of 1/(2piRC) = .15Hz! No need to pass such low frequencies! At 100 nF, we get 15Hz, which is just sub-sonic, but won't pass the really low DC comp
2006-12-22 by sasami@hotkey.net.au
The solution that supposedly works is to wire the 1k pot outer terminals into the circuit instead of an outer and the wiper. One then adds a capacitor between the wiper and one end. The result is that the DC passes through the 1k as required, and the wiper only ever sees AC. The
2006-12-22 by Charles Osthelder
That scratchiness is a feature. It's really cool with echo... Has anyone used a vactrol? It should still be scratchy, but perhaps less noticable. What about an OTA? They can be set up as programmable resistors. The LM13700 would be an excellent starting point for experimenting. S
2006-12-22 by The Alison Project
Check back post from about a month ago, seems everyone has this problem. Not due to bad pots but DC getting into the pot. I've tried a couple of fixes posted on the board and nothing has worked. ----- Original Message ----- From: peng3002 To: cgs_synth@yahoogroups.com Sent: Thurs
2006-12-21 by bbluthang
Hi maybe you missed it but this prob was discussed here a few weeks ago, there were a few suggestions for fixes. for your poll - I have two Synthacons, one had a brand new Res pot and was noisy from day 1. The other got a used pot from a dead 80s Panasonic tape recorder (ie - not
2006-12-21 by peng3002
I posted this to the SDIY list. Shoulda tried here first: I have two Synthacon VCFs built on CGS boards. The third one is on the way but before that I need to solve I problem I'm having. Turning the Resonance pot produces a scratchy noise. I think this is a common problem others
2006-12-20 by Andrew Scheidler
Cole - Yes, Front Panel Express. I wish I had an unlimited budget for panels; they look so nice but they get expensive fast! The PCBs are mounted with little "L" brackets that have threaded holes, and the black hex screws are used on the panel side to keep things looking clean. I
2006-12-20 by brownchonald
Andrew, These modules look very nice. Are those Front Panel Express panels? How did you mount the PCBs? Sweet, Cole --- In cgs_synth@yahoogroups.com , "Andrew Scheidler" wrote: > > I just posted pictures of my first two modules (Lockhart Wave Mult and > Slope Detector) > > The "O
2006-12-20 by Andrew Scheidler
I just posted pictures of my first two modules (Lockhart Wave Mult and Slope Detector) The "Oozitronics" folder :) http://launch.ph.groups.yahoo.com/group/cgs_synth/photos/browse/25d3 Andrew
2006-12-20 by Scott Deyo
This is the best way, I think. Using a center-off toggle, you can have three settings without using a rotary -- middle is your original 47n or whatever you choose. Two other values such as 100n and 470n at the switch, wired in parallel as Matthias says, gives you three effective
2006-12-20 by Matthias Herrmann
--- In cgs_synth@yahoogroups.com , "tardisstudio" wrote: > > What is the best way to make the LFO speed slower? Change the 47n > capacitor to a bigger one. > the best way would be to have one or two additional larger caps in parallel, selectable by a switch. then you'll have sele
2006-12-20 by The Alison Project
Sorry, didn't mean to send that last post to the list. Chris ----- Original Message ----- From: The Alison Project To: cgs_synth@yahoogroups.com Sent: Tuesday, December 19, 2006 9:13 PM Subject: Re: [cgs_synth] digital noise add-on Hi Chub Do you have an extra 4006 by any chance,
2006-12-20 by The Alison Project
Hi Chub Do you have an extra 4006 by any chance, I was thinking of implementing this modification as well as the other one you've posted on the yahoo group to my Digital Noise, and than thought if it's possible maybe I'd just build a second to do this with. Thanks Chris ----- Ori
2006-12-19 by Romeo Fahl
Exactly. If you want it really slow, use a small bi-polar electrolytic, somewhere in the 1 to 3.3 uF range. On mine, I used a rotary switch to switch between really slow (electrolytic), medium (47nF), and fast (.001uf?). Romeo On Dec 19, 2006, at 2:29 AM, tardisstudio wrote: > Wh
2006-12-19 by tardisstudio
What is the best way to make the LFO speed slower? Change the 47n capacitor to a bigger one.
2006-12-19 by Charles Osthelder
--- In cgs_synth@yahoogroups.com , Edward r Jones wrote: > > Sorry, that came across too much like American bashing. > It was only meant to be 25% bashatory, and I think I hit the high 40s :P Given our present government, the bashometer can ride in the red without fear of insulti
2006-12-19 by Jay
I hate USPS Form 2976=A with a vengeance. And I will charge extra if I have to deal with it. :-) Luckily for Airmail Letter Post under 4lb's you can use the short-form one and print them directly on the postage label (4x6 thermal if you're into that stuff). Andrew Scheidler wrote
2006-12-19 by Edward r Jones
Sorry, that came across too much like American bashing. It was only meant to be 25% bashatory, and I think I hit the high 40s :P Andrew Scheidler xpandrew@... > wrote: I think it is greedy sellers, whom abound in the US Andrew, continually embarassed by his country :( >>> Edward
2006-12-18 by mrmike
Hey All- If you are interested in patch cables, please let me know as the group buy will be closing soon. If you have expressed an interest, you should have received pricing information from me by email. If you have not gotten anything, let me know ASAP. FYI, all Stooge" cable co
2006-12-18 by sasami@hotkey.net.au
5 or 6 volts seems to be the general consensus. Ken >Yeah, I'm going with the 4017B. I've already got the schematic and a >PCB layout, I just wanted to know what I should limit the outputs to. >Thanks, >FutureImage > >--- In cgs_synth@yahoogroups.com , "bbluthang" wrote: >> >> --
2006-12-18 by Future Image
Yeah, I'm going with the 4017B. I've already got the schematic and a PCB layout, I just wanted to know what I should limit the outputs to. Thanks, FutureImage --- In cgs_synth@yahoogroups.com , "bbluthang" wrote: > > --- In cgs_synth@yahoogroups.com , "Future Image" wrote: > > >
2006-12-18 by Andrew Scheidler
I think it is greedy sellers, whom abound in the US Andrew, continually embarassed by his country :( >>> Edward r Jones kobanogomi@... > 12/18/06 8:25 AM >>> Maybe the US postal service is more fucked up than I can imagine, but, in Australia, it's just a little form to fill out,
2006-12-18 by Edward r Jones
That seller charges postage at what it costs them to send it, maybe rounded up to the nearest Dollar or so. I've shopped with them once or twice, as have many people I know. Anything I've ever purchased from an Australian supplier, I've only ever been charged ~$1.50, (2.50 tops)
2006-12-18 by Andrew Scheidler
Watch the shipping cost on small ebay stuff. Sometimes the price will be low and the shipping is outrageous so the seller can keep their ebay fee low. another Andrew >>> Louis van Dompselaar louis@... > 12/18/06 5:37 AM >>> Andrew, Do you have an auction number or seller user id?
2006-12-18 by Louis van Dompselaar
I see now why it didn't show up in my eBay. He doesn't ship outside Australia... > Item number: 120015468455 > the seller id is tcens > also it Aus$5, not US$ > > $7.25 is pretty good, gotta admit i like this ebay seller because he > is in the same town as me, so cheap shipping.
2006-12-18 by bbluthang
--- In cgs_synth@yahoogroups.com , "Future Image" wrote: > > Hi, > What is the standard gate/trigger voltage used? I'm thinking of > building a decade counter module to use as a primitive gate sequencer. > What should I reduce/amplify the output gate voltage to? > it depends on w
2006-12-18 by bbluthang
Hi Item number: 120015468455 the seller id is tcens also it Aus$5, not US$ $7.25 is pretty good, gotta admit i like this ebay seller because he is in the same town as me, so cheap shipping. Andrew --- In cgs_synth@yahoogroups.com , Louis van Dompselaar wrote: > > Andrew, > > Do y
2006-12-18 by Louis van Dompselaar
Andrew, Do you have an auction number or seller user id? Searching eBay for "74C922" doesn't yield anything. By the way, they are $7.25 at Futurlec, so you shouldn't have to pay $18 anyway. Louis > I found a cheap source for 74C922s > ebay store - Surplus RF and Electronic Parts
2006-12-18 by bbluthang
hi I found a cheap source for 74C922s ebay store - Surplus RF and Electronic Parts has them for $5 (buy it now, not an auction) I've dealt with this guy before, he is good. been waiting a while to find these, i'm too tight to pay the usual $18 for these chips. regards Andrew
2006-12-18 by Future Image
Hi, What is the standard gate/trigger voltage used? I'm thinking of building a decade counter module to use as a primitive gate sequencer. What should I reduce/amplify the output gate voltage to?
2006-12-16 by Future Image
Thanks a lot, that's answered my question completely! --- In cgs_synth@yahoogroups.com , "Bruce Harris" wrote: > > The amp rating is a maximum value. It doesn't mean that the supply > forces 40 A (or whatever it says) through the things you plug in. This > is one of the most comm
2006-12-16 by Bruce Harris
The amp rating is a maximum value. It doesn't mean that the supply forces 40 A (or whatever it says) through the things you plug in. This is one of the most common misunderstandings about voltage and current. Read up on what voltage and current really are. If you plug just one mo
2006-12-15 by Future Image
Hi, I've got my big Power One PSU down in the garage, and I've been thinking about the current it puts out. It gives out enough to power literally hundreds of modules apparently, but how will this current be shared? Will the modules just take what they need from the current, or w
2006-12-15 by sasami@hotkey.net.au
>Looking at the Sequential Switch info, am I correct in understanding how >the 4051 chip operates: > >Am I understanding this correctly? Yes, though as with all CMOS, you would need to have a (100k) pull-down resistor from each address input to earth to supply the "0" value for w
2006-12-15 by hitchindave
The CD4067, and others (e.g. HEF4067) is pretty much a 16 channel version of the 4051. Alternatively you might be able to use 2 4051s with the MSB switching the INHIBIT on/off. Probably be way fiddlier this way though, needing extra logic. Haven't tried this yet, but have been lo
2006-12-15 by hitchindave
The CD4067, and others (e.g. HEF4067) is pretty much a 16 channel version of the 4051. Alternatively you might be able to use 2 4051s with the MSB switching the INHIBIT on/off. Probably be way fiddlier this way though, needing extra logic. Haven't tried this yet, but have been lo
2006-12-15 by sasami@hotkey.net.au
I don't actually measure my module's current use. It all depends on activity etc, and + and - supply lines are rarely balanced, so figures when given, are not really accurate. That said, some modules draw next to nothing. You will probably get away with all running on a 1 amp sup
2006-12-15 by John Mahoney
At 01:57 PM 12/15/2006, Andrew Scheidler wrote: >... >If so, there certainly must be a similar chip that has *4* inputs and >can address 16 steps... can someone point me towards this, or at least >give me a clue to where I should start looking? > > >I am looking for a way to buil
2006-12-15 by Andrew Scheidler
Looking at the Sequential Switch info, am I correct in understanding how the 4051 chip operates: There are three inputs, together representing a 3 bit number. When voltage is applied at an input, that turns that "bit" on. So by way of those three inputs, you can address one of th
2006-12-15 by Mike Burnham
Hi Ken do you have any info on how much current your modules consume. I am running a 7815/7915 regulator setup 1A etc. what is the average consumption per unit? I have 2 cynare 1 ASR 1 gate sequencer + CV outs 1 sequential switch 1 infinite melody 1 Pulse Divider 3 VCO 2 VCA 1 di
2006-12-14 by Fernando de Izuzquiza
It keeps happening! > > > >Undoubtedly. I have been thingking of similar things myself. > > > >A new tube VCA design will be uploaded in the next few days. > > > >Ken > > That's my standard Ken Stone scenario! I get an idea and it turns out > that there's a CGS PC board for it. :
2006-12-14 by Fernando de Izuzquiza
Wow! That's synchronicity. Anyhow, that certifies it was actually a good idea =:p > My problem was similar - I'd come up with a great new idea, develop it, get > the board made, then discover Serge's version! > > Ken
2006-12-14 by sasami@hotkey.net.au
> >>Undoubtedly. I have been thingking of similar things myself. >> >>A new tube VCA design will be uploaded in the next few days. >> >>Ken > >That's my standard Ken Stone scenario! I get an idea and it turns out >that there's a CGS PC board for it. :-) Doesn't happen too much >a
2006-12-13 by John Mahoney
>Undoubtedly. I have been thingking of similar things myself. > >A new tube VCA design will be uploaded in the next few days. > >Ken That's my standard Ken Stone scenario! I get an idea and it turns out that there's a CGS PC board for it. :-) Doesn't happen too much anymore becau
2006-12-13 by Fernando de Izuzquiza
yummy...! > >Hola, thinking on the Tube VCA... > > > >It could be interesting to use it on the resonance feedback path of a > filter, internal or > >externally. > > It could be, yes. > > >And I wonder if it could be possible to build a -weird- filter using two or > three Tube VCA