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Path: ...!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 09 May 2024 17:24:58 +0000 From: john larkin <jl@650pot.com> Newsgroups: rec.sport.pro-wrestling,rec.arts.tv,uk.comp.sys.mac,edm.general,sci.electronics.design Subject: Re: Genocide Joe is beginning to stink like Lyndon B. Johnson Date: Thu, 09 May 2024 10:24:57 -0700 Message-ID: <3k1q3j98ugb5tnco15r919231d9i8kk5qj@4ax.com> References: <fv2n3jp854s3b3svugvo6cei33hthqt3et@4ax.com> <663beb6f$0$8094$882e4bbb@reader.netnews.com> <57vn3jh7rj8avvop51ocgcqt2697gbe01o@4ax.com> <663c0d82$0$8477$882e4bbb@reader.netnews.com> <1dbo3jd021lv1j79d8c1mn375dtqneb1io@4ax.com> <663c4480$0$6430$882e4bbb@reader.netnews.com> <mdlp3j11sqmj8na5vpd2kash0g4itvsf3r@4ax.com> <663ce726$0$7070$882e4bbb@reader.netnews.com> <q3rp3jdlfjvsd149lqu2c83rmr1jb8882m@4ax.com> <663cefd7$0$7067$882e4bbb@reader.netnews.com> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 111 X-Trace: sv3-mdc8zqOs1ztQTlozgLzYXH6phj5a6vdYHDADoW/GRSJwO6NWTbVouLTGavBcOYYZTAARGb96vBvpV2m!M+t8y4KpPBHuKlM1plVhSQS7oczPvn6SKD+sOgSwVPEYuQpvHsDsun0vy36/ZqKr6huLV665FZ7O!Rh61XQ== X-Complaints-To: www.supernews.com/docs/abuse.html X-DMCA-Complaints-To: www.supernews.com/docs/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 5729 On Thu, 9 May 2024 11:46:31 -0400, bitrex <user@example.net> wrote: >On 5/9/2024 11:33 AM, John Larkin wrote: >> On Thu, 9 May 2024 11:09:26 -0400, bitrex <user@example.net> wrote: >> >>> On 5/9/2024 10:06 AM, John Larkin wrote: >>>> On Wed, 8 May 2024 23:35:28 -0400, bitrex <user@example.net> wrote: >>>> >>>>> On 5/8/2024 10:04 PM, John Larkin wrote: >>>>>> On Wed, 8 May 2024 19:40:49 -0400, bitrex <user@example.net> wrote: >>>>>> >>>>>>> On 5/8/2024 6:32 PM, john larkin wrote: >>>>>>>> On Wed, 8 May 2024 17:15:27 -0400, bitrex <user@example.net> wrote: >>>>>>>> >>>>>>>>> On 5/8/2024 10:28 AM, John Larkin wrote: >>>>>>>>> >>>>>>>>>>> Jill Biden reportedly told her husband some time ago to “Stop it, Joe, >>>>>>>>>>> stop it now.” Good advice that he continues to ignore — at his peril, >>>>>>>>>>> and ours. >>>>>>>>>>> >>>>>>>>>>> https://mondoweiss.net/2024/05/genocide-joe-is-beginning-to-stink-like-lyndon-b-johnson/ >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> What's your favorite SiC mosfet? >>>>>>>>>> >>>>>>>>> >>>>>>>>> Why no buy WOLFSPEED: >>>>>>>>> >>>>>>>>> <https://www.mouser.com/ProductDetail/Wolfspeed/C3M0280090D?qs=nxZbHzLpdvfcUe1hs5VeOQ%3D%3D> >>>>>>>> >>>>>>>> What's wrong with that one? >>>>>>>> >>>>>>>> I've used C2M0280120D and it works fine. Gate drive is a nuisance, but >>>>>>>> that's true for all pure SiC parts. >>>>>>>> >>>>>>> >>>>>>> Ope, I meant to write "why not buy...", it looked like a nice part. More >>>>>>> standoff voltage than I'm accustomed to requiring for most projects, >>>>>>> though. >>>>>>> >>>>>>> I may have a need to roll my own hysteric synchronous buck soon, at an >>>>>>> astounding 12V.. >>>>>>> >>>>>> >>>>>> That's not SiC territory. Possibly GaN if you want a tiny MHz >>>>>> switcher. >>>>>> >>>>>> SiC has amazingly low capacitances compared to high-voltage silicon. >>>>>> But the gates have to swing to levels like +15 and -5. Fast. >>>>>> >>>>>> Why design a switcher, unless it's for fun. You can get a whole 2-amp >>>>>> buck switcher, great internal reference, current and thermal limited, >>>>>> spread spectrum, for 19 cents. >>>>> >>>>> >>>>> Indeed there's lots of stuff off the shelf but for the application I >>>>> have in mind the it's is acting more like a low frequency >>>>> self-oscillating Class D, tracking a control voltage. >>>> >>>> I have two current designs where I muck the feedback node of a >>>> spread-spectrum switcher chip to use it as either a programmable power >>>> supply, or an amplifier. >>>> >>>> The simple one powers about 130 12-volt relays. We run them at 12 >>>> volts whenever we reprogram them, and after a few milliseconds drop >>>> down to 8 volts to save power. >>>> >>>>> >>>>>> Eventually some damned IC jock intgrates our fun circuits. >>>>> >>>>> It's the future now, we can design our own mixed-signal ICs at the local >>>>> Starbucks, the IC jocks don't have to have all the fun. >>>>> >>>>> <https://www.renesas.com/us/en/document/dst/slg46140-datasheet> >>>>> >>>>> And I can integrate some other functions, too. Look at all the fun parts >>>>> you get for 40 cents in small quantity. These things have been solid >>>>> money-makers for me so far >>>>> >>>> >>>> People keep re-inventing the "analog FPGA" but none seem to AFbeen >>>> successful. There must be some deep fundamental reason why. >>> >>> Inertia? Have to use your brain? >>> >>>> OTP on a leadless package isn't appealing. >>>> >>>> A fierce uP with flash memory and some ADC and DAC channels is more >>>> useful. >>> >>> There aren't a lot of fierce uPs at the price, not ones with >>> well-documented tookits and APIs in English, anyway. >>> >> >> RP2040. > >Actually I probably don't need anything as complicated as an integrated >buck converter controller, anyway. Hard to believe this topology is >patented but I guess so long as I don't use something similar for >"digital audio"?? > ><https://patentimages.storage.googleapis.com/95/9c/87/a0741208b77066/US20070210861A1.pdf> > > > > That's crazy. It's obvious, trivial, and ancient. But the US Patent Office is a revenue center now.