Just built a Junk Trunk, which was a very pleasurable experience, I really like the style of layout, sensible spacing of components, very nice.
Limited wiring is also nice
It works also, so that is good, but the envelope detector seems a bit too sensitive. Haven't played around with it very long, but I think attenuating the signal going into the envelope detector could help a bit. But it might very well be the components I used, I used a 3.6V zener rather than 3.9 and I selected a green LED with 2.1V forward voltage drop (according to a table, yellow is between 2.1 and 2.2), as my particular yellow LEDs were all around 1.8V Vf which was atypically low for a yellow LED. Can someone explain the relation of the zener voltage and forward voltage drop with respect to functioning of the current to the OTA's?
Limited wiring is also nice
It works also, so that is good, but the envelope detector seems a bit too sensitive. Haven't played around with it very long, but I think attenuating the signal going into the envelope detector could help a bit. But it might very well be the components I used, I used a 3.6V zener rather than 3.9 and I selected a green LED with 2.1V forward voltage drop (according to a table, yellow is between 2.1 and 2.2), as my particular yellow LEDs were all around 1.8V Vf which was atypically low for a yellow LED. Can someone explain the relation of the zener voltage and forward voltage drop with respect to functioning of the current to the OTA's?