Doepfer

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hth
On 5 Apr 2008, at 10:31, Jordi Sampe Farre wrote:

> Hello, please, can you tell me what I can do it for no recieve more  
> mail form Doepfer group? Thanks and best from Barcelona
>
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> To: Doepfer_a100@yahoogroups.com
> From: hardware@doepfer.de
> Date: Fri, 4 Apr 2008 17:11:59 +0200
> Subject: AW: [Doepfer_a100] simple fixed slew limiter?
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>> hi group,
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>>
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>> i was wondering if it's possible to build a simple (passive?) slew
>
>> limiter with a view to rounding off a gate signal enough to
>
>> reduce/remove the clicks produced by controlling vca's with gate  
>> signals.
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>>
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>> i googled, but came up with a ton of stuuff that's a bit more than i
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>> need.
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>> i need no voltage control, indeed not even a variable slew rate.
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>> any ideas?
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>> thanks,
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>> stu
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> The simple low pass on the DIY page should do the job. The values  
> for R1 and
>
> C1 depend upon the desired slew rate which is ~ R1*C1. With 1uF and  
> 10k you
>
> obtain ~ 10 ms slew rate. The upper half of the A-170 uses this  
> circuit
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> (with R1 as a combination of a fixed resistor and a potentiometer)  
> followed
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> by a buffer amplifier to avoid voltage losses caused by the load  
> connected
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> to the R/C combination. But for simple Gate/VCA control a small  
> voltage loss
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> should not be a problem.
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> Best wishes
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> Dieter Doepfer
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