Yahoo Groups archive
Messages
Page 23 of 114 · 5656 messages matched
2012-11-07 by cg_synth
1206 is the size of a surface mount part, so yes, SMD. Alternatively, you can use little leaded ceramic monoblock caps, and solder their leads to the component pads themselves on the solder side of the PCB, e.g., directly between pins 8 and 4 on a TL072. --- In cgs_synth@yahoogro
2012-11-07 by Dennis Tan
Hi, I'm getting some parts for the wave multipler and don't seem to find this part here in Germany. Maybe it's because of the translation... I'm looking for 100n 1206 SMT. I hope that they ain't SMD. any ideas? Also does anyone in Germany know where I can get 10k joystick, like t
2012-11-07 by richmolindarius@gmail.com
I've the gut-feeling that it could be a lifted / non-connected Ground from what you've just described. Tame your meter and check all of the Ground connection's continuity back to the PCB's Ground input. On 2012-11-06, at 7:29 PM, Stephen Richards okayjustalittle@... > wrote: > Hi
2012-11-06 by Stephen Richards
Hi Ken Just wanted to update what i said about the VCO ; if it makes any difference. With the Tempco disconnected On the GND rail side , the whole thing worked but the Fine Tune was functioning exactly the same as Frequency. The connections are : Fine Tune wiper to Tune , Freq to
2012-11-05 by Ove Ridé
On 28 October 2012 02:43, Argitoth argitoth@... > wrote: > Can I boost the CGS116 output by changing a resistor or something? > Ideally I need it to output 10vpp. R7 and R8 are configured as a simple inverting amplifier, and the gain in this type of setup is R8/R7. Meaning the ga
2012-11-04 by sasami@hotkey.net.au
Replace the pulldown 100k resistor with a 1N4148 diode (cathode to transistor base). You may need to increase the value of the input (100k) resistor. The value of the input resistor will depend on the hfe of the individual transistor. You will never get it to track accurately dow
2012-11-04 by Argitoth
Can I boost the CGS116 output by changing a resistor or something? Ideally I need it to output 10vpp. Thanks! -Elan -- www.elanhickler.com
2012-11-04 by Steve Inselman
Hello, Does anyone know if the CGS led boards could be made signal sensitive? For example turning freq, res, cv in, vol ect. to 100% the led would be at its brightest and at 0% low or off without effecting the actual signal. I would like to have this option as well as the other o
2012-11-04 by sasami@hotkey.net.au
Feel free to post my answer - just make sure it has the correction in it (milliamps not microamps). Ken >Hi Ken, > >Thank you for the detailed reply! > >I'd done a bit of maths, but was mainly looking at the datasheets and working out safe levels etc... I did try it anyway, and i
2012-11-04 by charles kerr
Hi Ken, Thank you for the detailed reply! I'd done a bit of maths, but was mainly looking at the datasheets and working out safe levels etc... I did try it anyway, and it seems to work, you can get the dead spot, but not sure how it compares to the BAT48 - anyway I know it's bett
2012-11-04 by Dave Kendall
Thanks for that Ken - a very useful post. When comparing components, it can sometimes be difficult trying to work out what the really significant parameters are on a datasheet. Cut-and-pasted into the archives ;-) cheers, Dave On 4 Nov 2012, at 12:27, sasami@... wrote: > >Does an
2012-11-04 by Stephen Richards
Thanks Ken , i'll give it a go. ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Sunday, November 4, 2012 11:06 PM Subject: Re: [cgs_synth] Re: a couple of CGS48 VCO questions Usually, it is EXTREMELY unlikely that it is a dam
2012-11-04 by sasami@hotkey.net.au
Correction > Using ohms law V/R=I. 15 volts over 270000 ohms = 0.055555 _milli_ amps. _______________________________________________________________________ Ken Stone sasami@... otherunicorn@... Modular Synth PCBs for sale http://www.cgs.synth.net/ > Australian Miniature Horses
2012-11-04 by sasami@hotkey.net.au
>Does anyone know if I can sub a BAT42 for the BAT48 in the CGS 81 dual processor? Look at the datasheets: http://www.vishay.com/docs/85660/bat42,%20b.pdf http://www.datasheetcatalog.org/datasheet/vishay/85664.pdf 1)Reverse voltage 40 for the BAT48 vs 30. How much signal will it
2012-11-04 by sasami@hotkey.net.au
Usually, it is EXTREMELY unlikely that it is a damaged part. You probably have shorted two pads together/broken a pad by soldering for too long/used the wrong part somewhere. The tempco forms part of a voltage divider, so at a guess you have a wrong part (or other damage) around
2012-11-03 by Stephen Richards
Hi Gary and all Just an update on the one i referred to as the 'Second VCO' that had no output. I changed out the TL072's , no change ; then the LM394 which i thought had blown. Doing that i discovered that it's working , but only when the Tempco is desoldered ( i desoldered the
2012-11-03 by Mongo
Regarding the first VCO, it sounds like you probably have a bad IC1, or a bad solder joint somewhere. Recheck your solder joints, and if everything looks ok, measure the voltage at pin 7 of IC1 - it should track when the incoming control voltage changes. If it doesn't, try replac
2012-11-02 by charles kerr
Hello all, Does anyone know if I can sub a BAT42 for the BAT48 in the CGS 81 dual processor? I seem to have lots of BAT42, and would make life a lot easier if I didn't have to order some 48's Cheers, Charlie [Non-text portions of this message have been removed]
2012-11-02 by Stephen Richards
Hi Ken and all I'm building up the BOG panel and have done the two VCO's but am experiencing a few problems with both. One VCO is working fine apart from VC Freq pot ; seems to have zero effect on the Frequency when fed CV and when turned ; it also cuts out at the very lowest ran
2012-10-31 by Ehud
It simply looks great, even if the " modular" seems to be a little " lost"... Ehud Sent from my iPad On 31 Oct 2012, at 11:53, "ekkoflok" valdemar.kristensen@... > wrote: > Nice look! How are the letters on your panel made? > > Cheers, > Valdemar > > --- In cgs_synth@yahoogroups.
2012-10-31 by ekkoflok
Nice look! How are the letters on your panel made? Cheers, Valdemar --- In cgs_synth@yahoogroups.com , roglok wrote: > > Hey Kai, > > Congratulations! Very original design. The knob spacing would be a little too tight for me, but I love the look. > Like it was salvaged from a sov
2012-10-27 by cg_synth
The main multiplier in the 29 is very similar to the second one in the 113. The other two in each are nothing like each other. Ken --- In cgs_synth@yahoogroups.com , Argitoth wrote: > > What's the difference? CGS29 vs CGS113 > > Thanks! > -Elan > -- > www.elanhickler.com >
2012-10-27 by Argitoth
What's the difference? CGS29 vs CGS113 Thanks! -Elan -- www.elanhickler.com
2012-10-16 by roglok
That's some great info! Thanks Dave! On 16 Oct 2012, at 22:16, Dave Kendall wrote: > OK - from memory, the trick is to connect a higher value cap in > Parallel with the 47nF cap, so; > * Connect a wire from each side of the 47nF cap to each centre lug of a > DPDT toggle switch. >
2012-10-16 by Dave Kendall
OK - from memory, the trick is to connect a higher value cap in Parallel with the 47nF cap, so; * Connect a wire from each side of the 47nF cap to each centre lug of a DPDT toggle switch. * Connect a larger value non polarised cap across one pair of outer lugs. Try a 1uF or bigge
2012-10-16 by sirolffoonav
Great it will clock too. Haven't found timing info on electro-music.com and muffwiggler search function seems to be out. any wild guess is welcome too. I'll have to install a resonant gate first tonight. --- In cgs_synth@yahoogroups.com , Dave Kendall wrote: > > Hi. > > On 16 Oct
2012-10-16 by Dave Kendall
Hi. On 16 Oct 2012, at 07:54, sirolffoonav wrote: > Looking forward to handy extra modulation with this module! How fast > or how slow would the LFO go with just the 47n cap and no mods? > I'd love to have it at least from around 30 seconds to almost audio. > Will this go without
2012-10-16 by sirolffoonav
Looking forward to handy extra modulation with this module! How fast or how slow would the LFO go with just the 47n cap and no mods? I'd love to have it at least from around 30 seconds to almost audio. Will this go without mod? Curious for other cap speeds too. I'll only use the
2012-10-15 by fuyuhiko
Hi Nick. Actually I used the Antex 25W one, but unfortunately it died away in 2 months. Now I've found one from Weller; http://www.amazon.co.uk/Weller-WHS40-Temperature-Solder-WELWHS40LT/dp/B000X1T0RK/ref=wl_it_dp_o_pC_nS_nC?ie=UTF8&colid=SJFB95P3QJVF&coliid=I2UX57N76MPCG7 This i
2012-10-14 by Nick
I live in the UK and I use a good ol' cheap as chips Antex iron. Actually I do recommend keeping two - one 15-watt or so with a small pointed bit for integrated circuits, transistors, diodes and the like, and one 25-watt or so with a larger chisel bit for larger components, termi
2012-10-14 by sasami@hotkey.net.au
>Is this true generally, or is it specific to the ASR? In a perfect world, every module would have wires that run right back to the power supply. That reduces interference between the modules. The reality is only some modules cause problems. The easiest thing is to wire them to a
2012-10-14 by fuyuhiko
Thanks for the informations. Yes, it is British pounds. The Weller one seems nice, will look for similar one as I'm in the UK. Cheers. --- In cgs_synth@yahoogroups.com , Luú Marka wrote: > > I hope 20 pound is the price, not the weight... > Get yourself something like a Weller,
2012-10-14 by David Holt
Is this true generally, or is it specific to the ASR? David Holt On Oct 13, 2012, at 10:00 PM, sasami@... wrote: > Short answer: Yes. > > >I'm building a dual ASR module. I'll be stacking two CGS34 PCB's behind a > 5U panel. > > > >Can I jumper the power rails between the two PCB
2012-10-14 by Luís Marka
I hope 20 pound is the price, not the weight... Get yourself something like a Weller, for example: http://www.ebay.com/itm/Weller-Solder-Soldering-Station-WESD51-50-Watt-Digital-Adjustable-NEW-/380469820361?pt=LH_DefaultDomain_0&hash=item5895c4bbc9 This is the same I got, and lov
2012-10-14 by sasami@hotkey.net.au
gas ones are useless. Buy a temperature controlled iron. Ken >Does anyone use a gas soldering iron? I've just wondered if it's good for electronics. >My current two soldering irons, roughly 20 pound each, both died in two months, and I suspect that it's because of the UK 240V whi
2012-10-14 by fuyuhiko
Does anyone use a gas soldering iron? I've just wondered if it's good for electronics. My current two soldering irons, roughly 20 pound each, both died in two months, and I suspect that it's because of the UK 240V which is slightly higher than European 230V so I'm thinking of buy
2012-10-14 by sasami@hotkey.net.au
Short answer: Yes. >I'm building a dual ASR module. I'll be stacking two CGS34 PCB's behind a 5U panel. > >Can I jumper the power rails between the two PCB's so I only need one cable to power the module, or will I need two power cables? > >I'm guessing the latter, but thought I'd
2012-10-14 by Rico Loverde
I would think that would be fine. Its basically the same as using a distro board. On Saturday, October 13, 2012, Russ wrote: > ** > > > I'm building a dual ASR module. I'll be stacking two CGS34 PCB's behind a > 5U panel. > > Can I jumper the power rails between the two PCB's so
2012-10-14 by Russ
I'm building a dual ASR module. I'll be stacking two CGS34 PCB's behind a 5U panel. Can I jumper the power rails between the two PCB's so I only need one cable to power the module, or will I need two power cables? I'm guessing the latter, but thought I'd ask anyway. Thanks, Russ
2012-10-12 by richmolindarius@gmail.com
Fully agreed. The USG is my fave by far with the SSG following up in a close 2nd. :D On 2012-10-11, at 12:06 AM, Stephen Richards okayjustalittle@... > wrote: > My all time favourite Serge function block , DUSG rocks. > > ________________________________ > From: Rico Loverde rico
2012-10-11 by Stephen Richards
My all time favourite Serge function block , DUSG rocks. ________________________________ From: Rico Loverde ricoloverde@... > To: cgs_synth@yahoogroups.com Sent: Thursday, October 11, 2012 1:51 PM Subject: Re: [cgs_synth] Re: CGS114 DUSG problems/troubleshooting awesome!!! On We
2012-10-11 by Rico Loverde
awesome!!! On Wed, Oct 10, 2012 at 7:26 PM, ch1nard steve.benesko@... > wrote: > ** > > > > okay awesome, that was totally it > > Now other than the fact that i have the pots wired backwards DUSG seems > functional! > > --- In cgs_synth@yahoogroups.com , "ch1nard" wrote: > > > >
2012-10-11 by ch1nard
okay awesome, that was totally it Now other than the fact that i have the pots wired backwards DUSG seems functional! --- In cgs_synth@yahoogroups.com , "ch1nard" wrote: > > ah yes, you appear to be correct good sir :) > this would be reverse orientation for all trannies? (2N3904
2012-10-10 by ch1nard
ah yes, you appear to be correct good sir :) this would be reverse orientation for all trannies? (2N3904 and 2N3906) i will switch them around after i get home from work and see if that fixes things up. might need to hit up the parts store on the way home in case i pooched any of
2012-10-10 by sasami@hotkey.net.au
Also make sure you are using the right sort of tranny! I had people with this problem on another project - and they had used the wrong sort of tranny. >Are the trannies situated like the silk screen on the pcb or reversed? They >should be reversed. > > > >On Tuesday, October 9, 2
2012-10-10 by Rico Loverde
Are the trannies situated like the silk screen on the pcb or reversed? They should be reversed. On Tuesday, October 9, 2012, ch1nard wrote: > ** > > > Okay, i have been staring at this for almost a week without making any > progress so its time to start asking around for help on
2012-10-10 by ch1nard
Okay, i have been staring at this for almost a week without making any progress so its time to start asking around for help on figuring out what might be wrong with my DUSG build I am running this off +/-15v power supply and i have all the connections appear to be correct with no
2012-10-10 by Sean Ellis
Wow! Very nice system :) To: cgs_synth@yahoogroups.com From: kai@... Date: Tue, 9 Oct 2012 18:20:50 +0000 Subject: [cgs_synth] my cgs modular Hi everybody! I have followed the group for some time, because I have built my own cgs modular. I have used the group when I built the par
2012-10-09 by roglok
Hey Kai, Congratulations! Very original design. The knob spacing would be a little too tight for me, but I love the look. Like it was salvaged from a soviet submarine :) Cheers Leo On 9 Oct 2012, at 20:20, Kai wrote: > Hi everybody! > > I have followed the group for some time, >
2012-10-09 by Kai
Hi everybody! I have followed the group for some time, because I have built my own cgs modular. I have used the group when I built the parts, and when I designed the panel I have built it in a suitecase, for better transportation Because I'm constantly using it for liveperformanc