Ladder-filter for the shruti-1

[Paul Maddox]

I really don't see how that'll work, I don't think the 5V he has for
VCC and -5V for VEE will be enough to drive the ladder
I can see what he's done to change the biasing, basically he's missed
out part of the resistor voltage divider (R30 would normally be much
greater than 1K (http://m.bareille.free.fr/asm1/moogvcf.gif).
And R32/R35 is there to provide the change in biasing required.

I also think R41 and R42 are going to load the ladder too much.

it's an interesting take on the concept, I'll be very interested to hear it.

Paul

On 6 March 2013 18:02, Marc Nostromo [M-.-n] <marc.nostromo at gmail.com> wrote:
> usual shruti's got -9/+9..
>
> so that would make 18v. Or is there something I didn't understand ?
>
> Here's the current schematic:
>
> http://mutable-instruments.net/forum/uploads/FileUpload/d4/c6e37ec94c97274da8dfc001e8d34a.png
>
> Seems like they use the usual filter regulors.
>
> ( I thought I had copied the thread link on my first mail but it seems
> it wasn't)
>
> /M
>
> 2013/3/6 Paul Maddox <yo at vacoloco.net>:
>> I'll be interested to see how they "fit" the ladder in 12V (it needs
>> more than 12V end to end)..
>>
>> Paul
>>
>>
>> On 6 March 2013 16:56, Marc Nostromo [M-.-n] <marc.nostromo at gmail.com> wrote:
>>> Some people seem to be on the way to roll a new shruti-1 filter board. Nice.
>>>
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