[sdiy] Newbie capacitor questions 2 - Return of the Cap.

[Chris CROSSKEY]

Wouldn't the leakage be a problem with a ceramic or is npo way better than 
normal?

chrisc
----- Original Message ----- 
From: "Theo" <t.hogers at home.nl>
To: <samppa.tolvanen at gmail.com>; "Magnus Danielson" <cfmd at bredband.net>
Cc: <ijfritz at earthlink.net>; <synth-diy at dropmix.xs4all.nl>
Sent: Monday, January 10, 2005 1:28 AM
Subject: Re: [sdiy] Newbie capacitor questions 2 - Return of the Cap.


> I've used ceramics (47n NP0) for LFO and found no problems.
> Think VCO should be fine too the LFO's go into audio range without 
> trouble.
>
> Not NP0 but Murata hi-cap series can be quite fun and let you use a 1206 
> or
> 0805 10u/25V ceramic instead of a elco.
> The 10V and 6,3V parts even go up to 100u.
> Didn't test these parts for envelope use though...
>
> Theo
>
>
> ----- Original Message -----
> From: Magnus Danielson <cfmd at bredband.net>
> To: <samppa.tolvanen at gmail.com>
> Cc: <ijfritz at earthlink.net>; <synth-diy at dropmix.xs4all.nl>
> Sent: Sunday, January 09, 2005 6:27 PM
> Subject: Re: [sdiy] Newbie capacitor questions 2 - Return of the Cap.
>
>
>> From: Samppa Tolvanen <samppa.tolvanen at gmail.com>
>> Subject: Re: [sdiy] Newbie capacitor questions 2 - Return of the Cap.
>> Date: Sun, 9 Jan 2005 19:20:13 +0200
>> Message-ID: <fa1b0bd805010909201d2d9eea at mail.gmail.com>
>>
>> > On Sun, 09 Jan 2005 09:14:02 -0700, Ian Fritz <ijfritz at earthlink.net>
> wrote:
>> > > Ceramic has a significant soakage effect, as someone pointed out here
>> > > previously.  They seem to work pretty well, anyway, though.
>> >
>> > ..but not recommended for "critical" parts of the circuit - like osc.
>> > integrator cap ect.?
>>
>> Exactly!
>> LFO and envelope circuits should be places to think about soakage and
> memory
>> effects.
>>
>> Ceramics may however be usefull for HF-caps in the negative feedback etc.
>> For LF they are virtually not "in" and for HF they really need to be.
>>
>> Cheers,
>> Magnus
>