dont mind me, ill post synth schematics herestarting with a cool one, Roland 909 bass drum. working principle is that its an unstable system, so that a trigger (on the left) unleashes a brief state of oscillation that then calms down to quietness again

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/schem/ (synth ed.) Chud 04/16/25 (Wed) 04:27:08 №90347 [Quote]

dont mind me, ill post synth schematics here

starting with a cool one, Roland 909 bass drum. working principle is that its an unstable system, so that a trigger (on the left) unleashes a brief state of oscillation that then calms down to quietness again

Chud 04/16/25 (Wed) 04:36:15 №90376 [Quote]

File: 53670a07c8c83e90849a8cfef1….png 📥︎ (23.24 KB, 699x406) ImgOps

phase oscillator. ancient, but very trusty. the tube version looks the same but with a tube, its that rooted with reality itself.

Chud 04/16/25 (Wed) 04:39:56 №90390 [Quote]

File: Digital fuzz.jpg 📥︎ (45.69 KB, 594x290) ImgOps

digital fuzz. like deconstruction by 8bit dac and reconstruction by 8bit dac, prob sounds gnarly as sheet squelchy. most prob theoretical, never built by the author.

Chud 04/16/25 (Wed) 04:46:15 №90414 [Quote]

File: CASIO DM1000 SCH.jpg 📥︎ (133.36 KB, 1133x714) ImgOps

not schematic but almost diagram, "pseudo schematic". for the DD100, a casio double keyboard which is half a sk1 sampler and a normal pcm sample player. there you can see the dumbass APO circuit referenced. auto power off, that one that deletes your cool samples in the middle of your session, with no warning, to "protect your batteries".

Chud 04/16/25 (Wed) 04:48:08 №90423 [Quote]

File: digital_sine_wave_oscillat….gif 📥︎ (11.2 KB, 609x319) ImgOps

look a cute as heck digital sine wave

Chud 04/16/25 (Wed) 14:23:26 №92033 [Quote]

File: 440 VCF.jpg 📥︎ (935.39 KB, 6691x4585) ImgOps

idk whats this even from. 440 filter ??
it has 3086 so its ancient, but that transistor configuration, so weird, experimental maybe? some russian was trying stuff here, i smell it. the japanese are more elegant

Chud 04/16/25 (Wed) 14:25:05 №92043 [Quote]

>>90423
do you goon to this

Chud 04/16/25 (Wed) 14:26:36 №92050 [Quote]

These are nice. I've got a moog and korg I know how to use and patch to get what I want but I'm not very good at the schematic level.

Chud 04/16/25 (Wed) 14:28:51 №92057 [Quote]

File: PIEZO CV TRIGGER.jpg 📥︎ (49.59 KB, 1000x719) ImgOps

look a ciat lonbarde snippet. bar control. as in one of his wooden bars that have a piezo underneath and produce bipolar output. never tried one irl but must be hellish, this double triggering thing. could test at least one, im curious
>may contain errors

Chud 04/16/25 (Wed) 14:32:58 №92075 [Quote]

>>92043
not normally but that particular one has allure. would
>>92050
you just familiarize with schem, its always better to know
a bit more, you then fix your machines if they die

Chud 04/16/25 (Wed) 14:36:38 №92095 [Quote]

File: KORG STAGE ECHO.gif 📥︎ (363.09 KB, 2160x1361) ImgOps

those others were from a folder called "ORDER", so unsorted samey stuff. this one not synth but synth adjacent in terms of design, 70s era, etc. from korg tape echo, the space echo competitor. its cleaner sounding and that shows bc opamps and more involved design, companders, etc.

Chud 04/16/25 (Wed) 14:51:04 №92139 [Quote]

File: DEWTRON BASSMAN.jpg 📥︎ (478.65 KB, 1445x772) ImgOps

legendary floor bass synth. has no schem. circuit is in the black block on top, epoxied or smth probably harder than that. i dont think theres a schematic for this, oh well

Chud 04/16/25 (Wed) 14:55:16 №92148 [Quote]

>>92075
Any resources you'd recommend outside of hands-on experience?

Chud 04/16/25 (Wed) 15:04:22 №92167 [Quote]

>>92148
for the absolute basics that guy look mom no computer, hes good at that, then could be that guy klein (moris?) that also explains synth signal flow down to component level in a diff fashion but super clear. also professor aaron lanterman, hes awesome, more advanced but still clear and entertaining even if you know raisin about the contents. its all on youtube

Chud 04/16/25 (Wed) 15:08:36 №92179 [Quote]

File: OBERHEIM SEM VCF.jpg 📥︎ (273.44 KB, 1180x919) ImgOps

tom oberheim used to draw SEX. look at this schematic, so clear so well laid out, so well structured and readable. its bunch of components but makes it seem simpler somehow. its vcf and also output vca btw.

Chud 04/16/25 (Wed) 22:33:02 №93012 [Quote]

File: 13700.jpg 📥︎ (67.54 KB, 518x480) ImgOps

OTA time
i like this one, it has a pretty name, its actually two OTAs in one as can be seen in the image. transconductance amplifier, btw. useful for vcas, phasers, ringmods, filters, it truly can do it all.

Chud 04/16/25 (Wed) 22:36:13 №93014 [Quote]

File: CLS-222_SCHEMATICS.jpg 📥︎ (795.47 KB, 3608x2870) ImgOps

wont even google whats this but name and certain parts say rotary emulator. an electronic leslie, with the TDA chips, very cool and overdesigned, must be awesome, havent heard one however.

Chud 04/17/25 (Thu) 15:40:42 №94077 [Quote]

File: Electro Harmonix Frequency….gif 📥︎ (47.75 KB, 840x1059) ImgOps

do threads ever die in this place?

anyway this ehx frequency analyzer, aka. a ring modulator, it doesnt "analyze" raisin. its fed with mains current, if you give it half voltage, it becomes a tremolo, as expected.

Chud 04/17/25 (Thu) 15:41:34 №94079 [Quote]

>>94077
it takes a long time because we have a lot of pages

Chud 04/17/25 (Thu) 15:43:21 №94081 [Quote]

How would I go about learning this from the basics?

Chud 04/17/25 (Thu) 15:43:24 №94082 [Quote]

>>94079
right

Chud 04/17/25 (Thu) 15:54:53 №94098 [Quote]

>>94081
two books for you
https://www.n5dux.com/ham/files/pdf/Electronics%20for%20Dummies.pdf
https://www.worldradiohistory.com/BOOKSHELF-ARH/Technology/Rider-Books/Rider-Basic-Electronics-Vol-1--Van-Valkenburgh-Nooger-Neville.pdf

first is the dummies one, decent source more modern, 2nd was taught at navy schools, includes tube technology, its GOOD. otherwise, the youtubers mentioned above.

Chud 04/17/25 (Thu) 15:57:07 №94105 [Quote]

File: realistic-reverb-schematic.gif 📥︎ (120.63 KB, 3508x2550) ImgOps

the realistic "reverb" schematic. its of course a short delay with fb, not even realistic, however thats the brand. staple of circuit bending, good for noisemaking, still found for cheap.

Chud 04/17/25 (Thu) 15:57:52 №94107 [Quote]

>>94098
Thank you

Chud 04/17/25 (Thu) 16:17:48 №94137 [Quote]

The tiles fag is amping up his game. Now he goons to schematics.

amping up, haha got it lol

Chud 04/18/25 (Fri) 03:04:18 №94684 [Quote]

~-~electronics is the science of the electron, that much is true, never been stated so eloquently~-~

Chud 04/18/25 (Fri) 07:53:45 №94871 [Quote]

File: e v a p o r a t e d resist….png 📥︎ (3.7 KB, 500x279) ImgOps

ahh sweet! an /ohm/ thread!

Chud 04/18/25 (Fri) 08:09:31 №94879 [Quote]

File: proxy-image(7).jpg 📥︎ (105.85 KB, 960x680) ImgOps

>>92179
People don't know what's good unless you post the bad

Chud 04/18/25 (Fri) 11:04:01 №94983 [Quote]

File: SERGE SLOPE DUSG.jpg 📥︎ (142.29 KB, 894x765) ImgOps

nothing better than nice cup of colombian coffee in the morning and ogling at cool schems. this the serge universal slope generator, its dual so you do two of those and got the module. multiuse "atomic" module, does everything, vco, vcf, envelope, looping envelope, etc. cloned and released as the popular "maths" eurorack module.

Chud 04/18/25 (Fri) 11:14:02 №94989 [Quote]

File: sch_polivoks5-vco1vco2.jpg 📥︎ (372.25 KB, 1604x1388) ImgOps

soviet schem, polivoks vco. tried real unit irl, it sounds so good its unreal. you could do an equivalent with western parts, its opamps, NPN array, NPNs and passive parts.

Chud 04/18/25 (Fri) 15:55:54 №95164 [Quote]

electron flow

Chud 04/19/25 (Sat) 01:37:53 №95844 [Quote]

File: vtvcf_s.png 📥︎ (15.08 KB, 631x560) ImgOps

this ones neat, metasonix tube wah, old deprecated schem, prob sounds like trash, tube though. twin t design w transformer feedback path

Chud 04/20/25 (Sun) 05:51:49 №96853 [Quote]

File: astable neon.png 📥︎ (16.69 KB, 225x419) ImgOps

File: blink.gif 📥︎ (5.98 MB, 410x424) ImgOps

>>90376
post circuits that actually work lol

Chud 04/20/25 (Sun) 05:58:48 №96858 [Quote]

>>96853
This. Active components are for plebs.

Chud 04/24/25 (Thu) 10:49:54 №99787 [Quote]

>>95164
Hi, is there a way to retrieve the vocaroo page from here ?>>95164

Chud 04/24/25 (Thu) 11:02:34 №99790 [Quote]

File: vocaroo-com_1kDAmY9Tjm4H.png 📥︎ (58.23 KB, 1215x979) ImgOps

>>95164
May be too much saturation, but it sounds powerfull.

Chud 04/24/25 (Thu) 13:23:45 №99821 [Quote]

>>90347 (OP)
Kind of reminds me of the Wulitzer sideman which was one of the very first drum machines. Used a slightly overdamped phase shift oscillator that would oscillate for a second when triggered. I'll see if I can dig up the patent/schemo.

Chud 04/24/25 (Thu) 13:32:23 №99824 [Quote]

File: Screen Shot 2025-04-24 at ….png 📥︎ (278.68 KB, 958x1166) ImgOps

>>99821
A little detail of the bass drum part the RC pairs determine the frequency at which it oscillates. The triangle dealy is the grounding switch which knocks it into motion.