Path: ...!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Sun, 23 Jun 2024 13:16:16 +0000 From: john larkin Newsgroups: sci.electronics.design Subject: Re: Fast monostable with a transistor array Date: Sun, 23 Jun 2024 06:16:17 -0700 Message-ID: References: User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 86 X-Trace: sv3-n0fu6sWOPBYQuYoooyNbriSu4dp1TuTh7LPcjKGIYg+UpgWW02awCNk8VyWKmcLcA3enBAzJ3/N/Bp1!ZOpB6rz2mOMHD2Tl94fe85lp/V2Y5Mvz/emf5SaKBdF9PhzDrlUXER9tObXyA9rWVORNur1+Puja!MczKMg== 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: 4986 On Sun, 23 Jun 2024 22:29:40 +1000, Chris Jones wrote: >On 19/06/2024 8:17 pm, Bill Sloman wrote: >> On 19/06/2024 1:28 am, john larkin wrote: >>> On Tue, 18 Jun 2024 13:48:58 -0000 (UTC), piglet >>> wrote: >>> >>>> john larkin wrote: >>>>> On Tue, 18 Jun 2024 18:44:37 +1000, Bill Sloman >>>>> wrote: >>>>> >>>>>> On 14/06/2024 1:20 am, Bill Sloman wrote: >>>>>>> One option John Larjkin doesn't seem to have explored is using >>>>>>> Renesas >>>>>>> HFA3096 five transistor array as basis for his mononstable and level >>>>>>> shifter. >>>>>>> >>>>>>> It offers three 8GHz NPN parts and two 5.5GHz PNP parts in a >>>>>>> single array. >>>>>>> >>>>>>> https://www.renesas.com/us/en/document/dst/hfa3046-hfa3096-hfa3127-hfa3128-datasheet?r=494216 >>>>>>> >>>>>>> Two of the NPN parts could make up my emitter-coupled monostable, and >>>>>>> the two PNP parts could level shift the output. >>>>>>> >>>>>>> The Renesas website offers Spice models for both the NPN and the PNP >>>>>>> transistors, which one could plug into an LTSpice simulation, at the >>>>>>> cost of making it look too messy for the more sensitive designers >>>>>>> to be >>>>>>> able to look at. >>>>>> >>>>>> I've spent that last four days in hospital with Covid-19 of the >>>>>> colon - >>>>>> dramatic when it started but tedious thereafter. >>>>>> >>>>>> This thread hasn't gone all that well. John Larkin has ignored the >>>>>> fact >>>>>> that I was talking about just the 3096. There have been some sensible >>>>>> comments, but I'm still too sick to try and provide any kind of >>>>>> summing >>>>>> up of the sensible bits. >>>>>> >>>>>> -- >>>>>> Bill Sloman, Sydney >>>>> >>>>> OK, we can defer discussing your one-shot circuit until you feel >>>>> better. I've had some medical adventures of my own. >>>> >>>> My sympathies to both of you, coincidentally I am just getting back >>>> on my >>>> feet after an eight day common cold from hell (was not Covid) >>> >>> I'm now wearing a 24-hour recording EKG thing. It's really no trouble >>> at all. Pretty cool technology. >> >> And they have been around for at least thirty years. My mother got stuck >> with being a guineau pig for one some thirty years ago. >> >>> It's a pity that there is no low-drama equivalent for blood pressure >> You do have to compress the upper arm. >> > >FYI if you want to avoid getting covid again, it appears to be pretty >much exclusively airborne, so you probably won't get infected if you >(and your family if any) wear a respirator that fits you well, every >time you are indoors with people not from your household. > >To know whether the respirator fits you, you can do a DIY fit-test with >a handheld nebuliser from a pharmacy, which you put a strong-tasting >solution such as 3M FT-32 which you can buy from RS components. You >breathe in through your mouth with your tongue slightly out, whilst >surrounding the outside of the respirator with the bitter fog, and if >the resporator leaks, you will taste it. Generally you will need to wear >one with headloops and not earloops in order to pass. A 3M Aura is a >good one to try - most people can get it to pass the test. > >I haven't been sick at all since 2019, unless you count hangovers or >headaches from staying up too late. The main downside is that I can't >eat inside restaurants, so I order take-away instead. That seems like a >good deal to me, but others have different priorities from which I will >not attempt to dissuade them at present. > A Buzz Lightyear sort of full biohazard suit would be safer.