[sdiy] Draft schematics from my students

[René Schmitz]

Hello Aaron, Students and all,
> Here's a couple I received today, in case anyone feels like commenting.
> 
> http://users.ece.gatech.edu/~lanterma/ece4803/drafts

The clipping in Matt's buchla lp hp cascade as drawn in the upper half 
is not going to work. The diodes are directly hanging off the opamp 
output. Add a resistor.

On the MS20 Wasp crossbreed the trouble is the comparatively low input 
resistance of the inverting amplifiers. Consider going to very high 
values of 10Meg or so for the input and feedback resistors and choose 
the largest cap that is possible, or this won't be going to low 
frequencies. (It might be better to use jFet, darlington or mosfet 
followers.) One thing that comes to mind is that the diodes at the 
feedback gate might actually be spared. I'd add a switch to select 
either the diodes or let the gates softclipping take over.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159