555 attack decay cycle from H Thomas

230

02:01:30

eurorack voltages
Altered from the Henry Thomas design
https://electro-music.com/forum/viewtopic.php?highlight=attack+decay+555&t=61297

I've increased the voltage output for eurprack compatibility.
Second trigger switch works AR rather than AD
Added a switch and an inverting transistor to once triggered it will keep cycling.
Needs additional filtering on the power rail to protect the rest of the rack from the 555.

Extra transistor makes the envelope cycle, there's a switch to turn that off.

published 2 years ago

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.