Drum Oscillators - Onda Quadra 1979_01

 

 Berry Klein - Electronic Muisc Circuits

 

 

 

Tektronix CFG250 Function Generator 

Tektronix FG503 Function Generator

Polyphony Magazine - Random Tone Generator ; Freq. Divider .
.

   

.

 VCF - D.Avramov ; V Veleva

Nueva generacion instrumentos electronicos - Juan Bermudez

 

 

 

Emu UAF ( Universal Active Filter )

designs by Sergio Franco (Sal-Mar Construction)

 

 

 

Psychoacoustic Enhancer article by Paul Williams HSR August 1985

 

 

VCO by Stephan Winter ,full pdf with double sided pcb layouts for vco ,vcf ,envelope ,lfo etc. :  http://www.uni-muenster.de/imperia/md/content/fachbereich_physik/technik_didaktik/entwicklung_bau_synthesizer.pdf

Mixer , headphone and tone controls from November issue of Onda Quadra ,designs by A. Lazzari ,Riccardo Monti

 

 

Onda Quadra - ADSR ,along with PCB prints and synthesizer girl