All posts by david

My new DS8 Clone isn’t ready yet, but…

DS8, , , ,
Breadboarding is fun!

I’m still working on my DS8 Clone. I made 2 previous versions, but I’m not satisfied enough. The fact is DS7 or DS8 drums and their “clones” suffer from the original design flaws. All those clones are copies from the original model, with some additions. But they inherit the poor quality design. To mention a few, the low amplitude output, the poor noise source, the linear release enveloppe shape, the lack of punch on attack, the lack of 1 V/Oct tracking… And it’s not easy to debug.

So, I decided to completely redesign the guts of my next Drum Synth. Same behaviour, better characteristics.
Continue reading My new DS8 Clone isn’t ready yet, but… →

What’s on TV? “Basics of Ferrite Beads”

Basics of Ferrite Beads for Filters, EMI Suppression, Parasitic oscillation suppression / Tutorial

This video discusses the basics of ferrite beads, and their uses for basic filtering applications. It discusses and demonstrates how ferrites act as resistors at high frequencies, and how this is used for EMI/RFI Suppression, improved power supply filtering, parasitic oscillation suppression, and others. The affect of the frequency dependent resistive characteristic of the ferrite beads is demonstrated by showing its effect on a swept RF signal, its effect on the rise/fall time of a digital signal, and its effectiveness of eliminating parasitic oscillation.