On 30/10/18 01:25, jjhudak4@gmail.com wrote:> I did reply to your first post but I forgot and did it in my email and it > didn't get posted.> 6) unmoderated public forum. Right - anybody can say anything on any topic. > My expectations for ppl to stay on topic was apparently incorrect. My > expectation of professionals providing feed back in a professional manner was > not met by a number of the responses, to which I am unpleasantly surprised. > I am used to a higher standard, even in unmoderated groups. My expectations > have been 'recalibrated.' I appreciate the helpful feedback from you and > other. Peace, JSo clearly you haven't bothered to read /any/ other threads in this group! When wandering into a room/forum/group/etc it is considered wise to listen/read for a bit so that your contributions can "fit in" with other people's contributions. If you can't stand the heat (and can't even remember to hit the "send" button"!), stay out of the kitchen.
pointers to transistor (semiconductor) curve tracer circuits/projects
Started by ●October 28, 2018
Reply by ●October 30, 20182018-10-30
Reply by ●October 30, 20182018-10-30
whit3rd wrote:> > > > I am repairing some high end audio amps and cassette decks that have house numbered semiconductors, mainly transistors as well as JDEC p/n that are NLA. > > > > Basically what I am looking for is a curve tracer that has ... > > > My possibly-biased-by-youth opinion is that the transistor curve tracer > > is a mostly obsolete instrument from a time when transistors were > > expensive and manufacturing tolerances sucked balls and > > duff/under-performing parts were commonplace, that's not year of our > > Lord 2018, discrete transistors are cheap and quality is excellent. > > > Though the function of many devices is, as you say, excellent, yet > a few hours with a curve tracer is an important piece of experience to > have. Watch a semiconductor overheat, make smoke, and then... see > how it died (or how it recovers and continues to function when cooled). >** The device is ruined, wot a pile of BS.> When a transistor fails, it often passes the two-diodes testing, but a > curve trace that shows it to have 6V breakdown instead of 80V, is > giving you priceless information. >** No fooling? There are many far cheaper & simpler ways to do that test.> > Like maybe if you needed to well-characterize RF or microwave amp > > transistors to get all the relevant information... > > Yes, a curve tracer is an exploratory tool, and gives good service at the > borders of the known. That may be RF, or it may be Zener noise, or it > may be Early effect, or any of the characteristics that a design (or repair) > will hinge on. Specification sheets just do NOT cover everything, it > takes some exploration too. > > Don't leave the well-blazed trail without your axe, compass, and curve tracer.** Totally off with the fairies .... ..... Phil
Reply by ●October 30, 20182018-10-30
>"why in the world would I join a party so beloved by these whackjob "Real America" holy-roller evangelicals? scumbag scam-artists the lot of 'em and anyone who panders to them"I don't fucking "pander" to anyone. And why support them ? Because as bad as they are they are a hell of alot better for the country than the filthy despicable democrats who are acting like spoiled children. You disagree fine, see you at the polls. If any of your kind tries to bother me at the polls I will gut them with a fucking brick. We are tired of leftists killing business and brainwashing people that it is how it is. We are sick of arguing gun control with a bunch of people who eat soap and don't know what bathroom to use. We are not having your homosexual sex in kindergarten nor tearing down every fucking statue in this country. Democrats can go fuck themselves and the fucking jet they flew to the "green" conference in. Fuck those cunt of theirs crawling out of the woodwork. I don't care if Trump rapes 25 nuns and burns them in the fucking street, if no other REPUBLICAN is available he has my vote. I will never vote for any democrat no matter what. After that they did, no matter what. I do not care who the fuck the republicans run, the democrats will never ever get my vote. The senate is in the bag, we might even keep the house. It wasn't always that way, it looked like democrats would take the house but after their violence and other ridiculous bullshit that is now in jeopardy. They are LOSING voters. I have corresponded with quite a few people who are the same, no more democrats. One even says he admits to being a bleeding heart liberal, but will never vote democrat again.
Reply by ●October 30, 20182018-10-30
>"11PM and I forgot to eat dinner. Argh. "You would switch gods if you had one of these pork chops I made last night. Just about the right time. It was done at about 2:00 AM so over there that is what, 3 hours behind ? Would have been nice and hot. I would have to put on a bag of rice though. I can cook but I can't make rice. I use the boil in a bag stuff. I guess I could make it that way with beef...
Reply by ●October 30, 20182018-10-30
On Tue, 30 Oct 2018 08:33:02 +0000, Tom Gardner <spamjunk@blueyonder.co.uk> wrote:>On 30/10/18 01:25, jjhudak4@gmail.com wrote: >> I did reply to your first post but I forgot and did it in my email and it >> didn't get posted. > >> 6) unmoderated public forum. Right - anybody can say anything on any topic. >> My expectations for ppl to stay on topic was apparently incorrect. My >> expectation of professionals providing feed back in a professional manner was >> not met by a number of the responses, to which I am unpleasantly surprised. >> I am used to a higher standard, even in unmoderated groups. My expectations >> have been 'recalibrated.' I appreciate the helpful feedback from you and >> other. Peace, J > >So clearly you haven't bothered to read /any/ other threads >in this group! > >When wandering into a room/forum/group/etc it is considered >wise to listen/read for a bit so that your contributions can >"fit in" with other people's contributions. > >If you can't stand the heat (and can't even remember to hit the >"send" button"!), stay out of the kitchen.Does anybody want my custard bread pudding recipe? -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●October 30, 20182018-10-30
On Sun, 28 Oct 2018 22:16:53 -0400, bitrex <user@example.net> wrote:>I'm probably too long-time New Englander for that I'm afraid, why in the >world would I join a party so beloved by these whackjob "Real America" >holy-roller evangelicals? scumbag scam-artists the lot of 'em and anyone >who panders to themTribalism in action. That's a lot easier than thinking. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●October 30, 20182018-10-30
On Sun, 28 Oct 2018 22:38:58 -0400, bitrex <user@example.net> wrote:>On 10/28/2018 10:34 PM, Clifford Heath wrote: >> On 29/10/18 12:33 pm, jurb6006@gmail.com wrote: >>>> ""youth", in quotes I'm just shy of 40" >>> >>> Wow, that explains why you're not conservative. You will be in about >>> ten years, and don't worry, it doesn't hurt. >> >> As the saying goes... >> >> If you're not a socialist when you're young, you have no heart; >> If you're not a capitalist when you're old, you have no brain. >> >> :) > >"We must secure the existence of our people and a future for white >children, because the beauty of the White Aryan woman must not perish >from the Earth."There are some dynamite white aryan women; I'd hate to lose them. There are gorgeous african and asian women too; let's protect and preserve them all.> >The "beauty of the White Aryan woman" could stand to lose about 35 >pounds on average in this country, it's way more likely to perish from >heart disease than MexicansI like skinny women, but I know guys who prefer "more to grab." Nature provides. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●October 30, 20182018-10-30
On Sun, 28 Oct 2018 20:00:13 -0700, Jeff Liebermann <jeffl@cruzio.com> wrote:>On Sun, 28 Oct 2018 18:33:48 -0700 (PDT), jurb6006@gmail.com wrote: > >>>""youth", in quotes I'm just shy of 40 " >> >>Wow, that explains why you're not conservative. You will be >>in about ten years, and don't worry, it doesn't hurt. > >Y're right. I'm just short of 71. I started out as a radical >leftist, commie pinko, anti-everything, chronically protesting, hippie >freak: ><http://www.learnbydestroying.com/jeffl/pics/jeffl/slides/jeffl-06.html> >Fast forward about 40 years, and today I'm an arch conservative, >somewhat reactionary, right leaning, registered Republican, member of >the establishment: ><http://www.learnbydestroying.com/jeffl/pics/jeffl/slides/jeffl-08.html> >It can and probably will happen to you. Resistance is futile.That's just accumulated wisdom. -- John Larkin Highland Technology, Inc lunatic fringe electronics
Reply by ●October 30, 20182018-10-30
On 10/30/2018 08:54 AM, jurb6006@gmail.com wrote:>> "why in the world would I join a party so beloved by these whackjob "Real America" holy-roller evangelicals? scumbag scam-artists the lot of 'em and anyone who panders to them" > > I don't fucking "pander" to anyone. And why support them ? Because as bad as they are they are a hell of alot better for the country than the filthy despicable democrats who are acting like spoiled children. > > You disagree fine, see you at the polls. If any of your kind tries to bother me at the polls I will gut them with a fucking brick. > > We are tired of leftists killing business and brainwashing people that it is how it is. We are sick of arguing gun control with a bunch of people who eat soap and don't know what bathroom to use. We are not having your homosexual sex in kindergarten nor tearing down every fucking statue in this country.lol ya, homosexual sex in kindergarten that's the plan. Hillary Clinton runs a child sex dungeon in a DC pizza parlor, too.> Democrats can go fuck themselves and the fucking jet they flew to the "green" conference in. Fuck those cunt of theirs crawling out of the woodwork. > > I don't care if Trump rapes 25 nuns and burns them in the fucking street, if no other REPUBLICAN is available he has my vote. I will never vote for any democrat no matter what.That's charming.> After that they did, no matter what. I do not care who the fuck the republicans run, the democrats will never ever get my vote. > > The senate is in the bag, we might even keep the house. It wasn't always that way, it looked like democrats would take the house but after their violence and other ridiculous bullshit that is now in jeopardy. They are LOSING voters. I have corresponded with quite a few people who are the same, no more democrats. One even says he admits to being a bleeding heart liberal, but will never vote democrat again. >It happens. As I mentioned somewhere else I know that Americans often get old and cranky, and America has an aging population. e.g. as I mentioned prior the guy who takes a swing to the right after his first wife divorces him. I don't usually have a lot of sympathy for those guys I could generally spot these bad-news women coming a mile off why couldn't they. As for anyone who runs lines like "I will never..." or "I always..." there are words for people like that it is called "full of shit."
Reply by ●October 30, 20182018-10-30
On 30/10/18 15:15, John Larkin wrote:> On Tue, 30 Oct 2018 08:33:02 +0000, Tom Gardner > <spamjunk@blueyonder.co.uk> wrote: > >> On 30/10/18 01:25, jjhudak4@gmail.com wrote: >>> I did reply to your first post but I forgot and did it in my email and it >>> didn't get posted. >> >>> 6) unmoderated public forum. Right - anybody can say anything on any topic. >>> My expectations for ppl to stay on topic was apparently incorrect. My >>> expectation of professionals providing feed back in a professional manner was >>> not met by a number of the responses, to which I am unpleasantly surprised. >>> I am used to a higher standard, even in unmoderated groups. My expectations >>> have been 'recalibrated.' I appreciate the helpful feedback from you and >>> other. Peace, J >> >> So clearly you haven't bothered to read /any/ other threads >> in this group! >> >> When wandering into a room/forum/group/etc it is considered >> wise to listen/read for a bit so that your contributions can >> "fit in" with other people's contributions. >> >> If you can't stand the heat (and can't even remember to hit the >> "send" button"!), stay out of the kitchen. > > Does anybody want my custard bread pudding recipe?I expect you like that as much as I like my (brussel) sprouts sarnies. (And infer what I'm /not/ saying :) )
