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 14:08:14 +0000 From: John Larkin 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 07:06:28 -0700 Organization: Highland Tech Reply-To: xx@yy.com Message-ID: References: <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> X-Newsreader: Forte Agent 3.1/32.783 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 82 X-Trace: sv3-Z4wQjqaVikSGo+xSwnoqCm90X6nmTbG8HOu8dEAM0QwJWd+3ASfWFi5l46tVSGqYIvRNNDGxC/27jmz!1d0xk2CaXHxCZPXRCGTMS+RJ42FdubV+bEk/UshwPR7yzhzF1W0DVaIxmGZvtmaO3YTSlDvwtRVz!xjx2dw== 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: 4452 On Wed, 8 May 2024 23:35:28 -0400, bitrex wrote: >On 5/8/2024 10:04 PM, John Larkin wrote: >> On Wed, 8 May 2024 19:40:49 -0400, bitrex wrote: >> >>> On 5/8/2024 6:32 PM, john larkin wrote: >>>> On Wed, 8 May 2024 17:15:27 -0400, bitrex 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: >>>>> >>>>> >>>> >>>> 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. > > > >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 have been successful. There must be some deep fundamental reason why. OTP on a leadless package isn't appealing. A fierce uP with flash memory and some ADC and DAC channels is more useful.