RS-elc (24)

Construire un VCF 9 octaves avec un seul amplificateur opérationnel

25-03-2021 | Ce simple filtre passe-bas à alimentation unique présente une fréquence de coupure exponentielle contrôlée par tension sur neuf octaves et p...

Proposition

Analog Synthesizer Filter using one opamp

par RS-elc

3-02-2021 | Lowpassfilter with voltage controlled frequency and Q (up to oscillation). Runs on single supply 5V and can be sweeped from 16kHz to 30Hz wi...

Proposition

Synthesizer PRBSynth1

par RS-elc

3-01-2021 | Music synthesizer based on noise and pattern generation. Sound effects, percussion and pitched sounds can be generated. Comes with multimode...

Proposition

Electric charge detector

par RS-elc

15-05-2019 | Electric charge detector using 3 components only. Warns you when electrically charged objects appear. Runs for months on a battery.

Au sujet de l'auteur

I started in electronics at the age of 12 and soon after my parents gave me a Philips EE2040 experimenter kit. I was making circuits that produced all kind of sounds, resulting in an interest for synthesizers. At those days, the music shops had the analog Moog and Oberheim synthesizers but these were way too expensive for me. For years I soldered perfboards together, partly my own improvised design and partly from books and magazines (no internet yet) like Elektuur. Trial and error was my education untill I studied electrical engineering and found that these things can be better understood and even predicted. Having worked as an electronics engineer since then, my analog background and intuition is really an advantage when designing and troubleshooting all kinds of low noise measurement instrumentation circuits. My hobby projects always aim at "as simple as possible" and are often audio/synthesizer related. Raymond Schouten