Schematics Vault

vladosh · Posted: Sun May 19, 2013 11:41 pm Post subject:

Studio Monitor filter design by A. Grigorova [ Радио, телевизия, електроника - 10 . 1974 ]

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PHOBoS · Posted: Mon May 20, 2013 5:03 am Post subject:

ah, you made it to page 10, congratz! party!

and thanks!, this vault has come in handy a couple of times.

vladosh · Posted: Mon May 20, 2013 5:41 am Post subject:

Generator za pravoagolno i impulsno naprazhnenie ,Square wave Tube based Generator design by M.Nikolov [Радио, телевизия, електроника 03 - 1968 ]

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vladosh · Posted: Tue May 21, 2013 12:02 am Post subject:

Лесли Симулатор featured in March 1978 edition of Радио ,Телевизија ,Електроника design by D.Avramov

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vladosh · Posted: Wed May 22, 2013 6:58 am Post subject:

LFO with variable phase by H. Kribel

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elmegil · Posted: Wed May 22, 2013 8:14 am Post subject:

-minus- · Joined: Oct 26, 2008 Posts: 787 Audio files: 13

Transmitter from Sputnik 1 Cool

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vladosh · Posted: Wed May 22, 2013 9:29 am Post subject:

pq · Joined: Feb 15, 2013 Posts: 9 Location: Brazil

vladosh · Posted: Sun Sep 01, 2013 11:12 am Post subject:

ETI VCF design by Trevor Marshall ,more info on the ETI Synthesizer on the link :[url] http://www.trevormarshall.com/eti.htm [/url] the whole documentation on the ETI International Synthesizers you can download here : http://www.eti4600synthesiser.org.uk

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vladosh · Posted: Sun Sep 01, 2013 11:27 am Post subject:

VC Pan from Ogee Synthesizer by Scott Bernardi , more desings from this synthesizer on the following link :
http://www.bernacomp.com/elec/ogee_specs.html

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vladosh · Posted: Sun Sep 01, 2013 11:31 am Post subject:

Low Frequency Oscillator by Scott Bernardi from the OGEE Synthesizer ,more on the following link : http://www.bernacomp.com/elec/ogee_specs.html

Features

Selectable Triangle or Sine outputs (+/- 5v with Level control)
Pulse output (0-5v) with PWM control and LED's indicating duty cycle
Frequency control adjusts frequency exponentially from about 0.1hz to 100 hz

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vladosh · Posted: Sun Sep 01, 2013 11:34 am Post subject:

Multiplexor by Scott Bernardi more on his OGEE Synthesizer on the link : http://www.bernacomp.com/elec/ogee_specs.html

Features

Switches output between four different inputs
Built in clock, or manual step or external trigger

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vladosh · Posted: Thu Sep 05, 2013 9:31 am Post subject:

Voltage Controlled Electro-Optical Mixer design by Grant Richter ,from the description on his site :
A simple and inexpensive device is described which allows selecting and mixing audio channels by control voltage. The circuit takes advantage of the low self-noise of analog photocouplers. The slow response time of the phosphour is used to integrate the pulse width modulated LED drive. Channel crossfading is accomplished by adding a "dither" signal to the comparator string, producing apparent linear crossfades between audio channels.

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vladosh · Posted: Mon Sep 09, 2013 7:10 am Post subject:

Simmons SDS - 3 ,schematic redrawn by xpmtl as posted in the following thread : http://electro-music.com/forum/topic-16985-250.html visit xpmtl's page for a SMT pcb layout http://xpmtl.net/sdiy/projects/simmons-sds-3-voice/

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vladosh · Posted: Mon Sep 09, 2013 7:15 am Post subject:

Pollard Syndrum by Joe Pollard and Mark Barton ,schematic and short description provided on http://clacktronics.co.uk/drumlab/pollard-syndrum

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vladosh · Posted: Wed Sep 11, 2013 12:33 pm Post subject:

Drum Tone Oscillators by PAiA as presented in an article in the June 1993 issue of Electronics Now , full description at PAiA website : http://www.paia.com/ProdArticles/syndrum.htm

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vladosh · Posted: Mon Sep 23, 2013 11:13 am Post subject:

Fleuril - VCF as part of the White Rose modular synth , schematic shared on the following blog http://thermidor.altervista.org/fleuril-vcf/ , from the description there :
The filter developed for this synthesizer is a Sallen-Key, whose control voltage is achieved with diode-ladder.

The idea of how to develop this type of circuit l' I got it from a project by Osamu Hoshuyama, which is available here : http://www5b.biglobe.ne.jp/~houshu/synth/Vcf0111.gif

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vladosh · Posted: Mon Sep 23, 2013 11:25 am Post subject:

External input and VC Clipping Limiter by Stefano Maurri : http://mwpc1.det.unifi.it/~maurri/synth.html

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vladosh · Posted: Wed Feb 05, 2014 10:33 am Post subject:

Dual ADSR ,by Adriano Lazzari & Riccardo Monti ,from September 1978 issue of Italian magazine - Onda Quadra ,full article contains pcb layout and BOM

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vladosh · Posted: Wed Feb 05, 2014 10:42 am Post subject:

VCF by A.Lazzari and Riccardo Monti featured October 1978 issue of Onda Quadra ,more details on the construction in the full article

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vladosh · Posted: Fri Feb 07, 2014 12:39 pm Post subject:

VCO by Stephen Winter ,the whole pdf document in German containing double sided PCB layouts can be found here : http://www.uni-muenster.de/imperia/md/content/fachbereich_physik/technik_didaktik/entwicklung_bau_synthesizer.pdf

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vladosh · Posted: Sat Feb 08, 2014 6:29 am Post subject:

The E&MM Spectrum Synthesizer design by Chris Jordan of E&MM ,from the description :

- The Spectrum is a monophonic two oscillator switch-linked synthesiser featuring advanced specification, constructional simplicity and low cost. Modulation, timbre control, and interface facilities not found on any
comparable synthesiser make it extremely powerful and versatile for keyboard playing, sound effects and
many other home, stage, or studio applications. , the Special Edition issue with pcb layouts and tips on building the Spectrum http://www.bigbluewave.co.uk/images/spectrum-notes-04.pdf

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vladosh · Posted: Fri Feb 14, 2014 4:46 am Post subject:

FET VCA by Mike Irwin ,published in EDN - September 05, 2002 ,details on this circuit here : http://www.edn.com/design/analog/4339537/Op-amp-linearizes-response-of-FET-VCA

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Nardu · Joined: Feb 28, 2011 Posts: 62 Location: Braila, Romania