Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Bill Sloman Newsgroups: sci.electronics.design Subject: Re: About TIAs Date: Sat, 28 Dec 2024 14:58:08 +1100 Organization: A noiseless patient Spider Lines: 31 Message-ID: References: <84utmj58ai0qrq3kdq52j44lqjpl16b0ng@4ax.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Sat, 28 Dec 2024 04:58:23 +0100 (CET) Injection-Info: dont-email.me; posting-host="1ceff0c6f66e4824153f3330ae5c6297"; logging-data="150941"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18YcYPqvFTrfj5JXnmqa0x+0dAXosP0ygg=" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:VTtlREElMp0c//LN5X95ZEhGl5U= In-Reply-To: <84utmj58ai0qrq3kdq52j44lqjpl16b0ng@4ax.com> X-Antivirus: Norton (VPS 241227-2, 27/12/2024), Outbound message Content-Language: en-US X-Antivirus-Status: Clean Bytes: 2284 On 28/12/2024 6:01 am, john larkin wrote: > On Fri, 27 Dec 2024 18:16:44 +0000, Cursitor Doom > wrote: > >> On Fri, 27 Dec 2024 08:12:23 -0800, john larkin wrote: >> >>> On Fri, 27 Dec 2024 13:45:15 GMT, Jan Panteltje >>> wrote: >>> >>>> https://www.electronicdesign.com/technologies/analog/article/55250719/phlux-technology-tailoring-the-design-of-transimpedance-amplifiers-to-infrared-sensor-apps-part-2 >>>> >>>> I just drive the photo diode directly into the base of an NPN ..... >>>> (ducks). >>> >>> I just drive it into the emitter of an NPN. That's my Tough TIA >>> circuit. >> >> John, ISTR we made a deal about not feeding the trolls? > > His post was reasonable and on-topic, and he didn't insult anyone, and > TIAs are interesting. > > Transistor betas are all over the place, but alphas are very > predictable. More to the point, Cursitor Doom *is* an anonymous troll, and any "agreement" with him exists only in his fertile imagination. -- Bill Sloman, Sydney