X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f X-Recipient: geda-user AT delorie DOT com X-TCPREMOTEIP: 64.134.36.35 X-Authenticated-UID: jpd AT noqsi DOT com Content-Type: text/plain; charset=windows-1252 Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.2\)) Subject: Re: [geda-user] OT: capacitor choices From: John Doty In-Reply-To: <53839534.2010101@neurotica.com> Date: Mon, 26 May 2014 15:09:50 -0500 Message-Id: <8B2A64AF-4FDB-484E-BC08-E893D49EEAF3@noqsi.com> References: <53839534 DOT 2010101 AT neurotica DOT com> To: geda-user AT delorie DOT com X-Mailer: Apple Mail (2.1878.2) Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id s4QKA0Kk031519 Reply-To: geda-user AT delorie DOT com Errors-To: nobody AT delorie DOT com X-Mailing-List: geda-user AT delorie DOT com X-Unsubscribes-To: listserv AT delorie DOT com Precedence: bulk On May 26, 2014, at 2:25 PM, Dave McGuire wrote: > > Hey folks. Please forgive the off-topic post; given the audience here > I think this is as good a place as any to ask. > > What type of capacitor (dielectric composition) would you use for a > precision integrator these days? Polystyrene would probably be my first > choice, but there's not much selection in that nowadays. Maybe > polypropylene? Any opinions? Polypropylene’s good. Polyphenylene sulfide (PPS) is the trendy new material for this. John Doty Noqsi Aerospace, Ltd. http://www.noqsi.com/ jpd AT noqsi DOT com