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From: john larkin <jl@glen--canyon.com>
Newsgroups: sci.electronics.design
Subject: Re: kids these days
Date: Wed, 02 Oct 2024 14:04:02 -0700
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On Wed, 2 Oct 2024 20:29:23 -0000 (UTC), Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

>john larkin <jl@glen--canyon.com> wrote:
>> On Wed, 02 Oct 2024 06:02:09 GMT, Jan Panteltje <alien@comet.invalid>
>> wrote:
>> 
>>> On a sunny day (Tue, 01 Oct 2024 07:50:47 -0700) it happened john larkin
>>> <JL@gct.com> wrote in <eu2ofjhoa2566a02apvlhjlvil4gaq0536@4ax.com>:
>>> 
>>>> On Tue, 01 Oct 2024 06:11:49 GMT, Jan Panteltje <alien@comet.invalid>
>>>> wrote:
>>>> 
>>>>> On a sunny day (Mon, 30 Sep 2024 08:24:38 -0700) it happened john larkin
>>>>> <JL@gct.com> wrote in <7bglfjtll1os4g6pfqhf1i7jl0acmrvlqv@4ax.com>:
>>>>> 
>>>>>> On Mon, 30 Sep 2024 11:13:56 +0100, Cursitor Doom <cd@notformail.com>
>>>>>> wrote:
>>>>>> 
>>>>>>> On Mon, 30 Sep 2024 05:15:02 GMT, Jan Panteltje <alien@comet.invalid>
>>>>>>> wrote:
>>>>>>> 
>>>>>>>> On a sunny day (Sun, 29 Sep 2024 10:36:26 -0700) it happened john larkin
>>>>>>>> <JL@gct.com> wrote in <kb3jfjpejs47hqjd00fis20eog8de19ae8@4ax.com>:
>>>>>>>> 
>>>>>>>>> I wouldn't hire someone who complicates a simple question into
>>>>>>>>> paralysis.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> I draw a 10 volt battery connected to two resistors, 9K in series with 1K.
>>>>>>>> 
>>>>>>>> The problem there is 'draw', no reality.
>>>>>>>> The battery will have an internal resistance, maybe discharged too.
>>>>>>>> 
>>>>>>>>> What's the voltage across the 1K?
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>>> I hired a 3-month intern a month ago who failed the test. He said 9
>>>>>>>>> volts. I hired him anyway and fired him as an intern on Friday. He's
>>>>>>>>> full time now. He's mostly a software engineer. I'm teaching him basic
>>>>>>>>> electronics now. 
>>>>>>>> 
>>>>>>>> Well, that is OK.
>>>>>>>> But needs experimenting, building circuits, else all vaporware.
>>>>>>>> Same with software, write it, test it, else just imagination...
>>>>>>>> It may not be / work for everybody..
>>>>>>>> Some run for US precedent..
>>>>>>>> When I have to believe the crap trump puts out these days (about Iran for example)
>>>>>>>> 4 sure (or maybe even 00 sure <where 00 is the symbol for infinite> ) we will have
>>>>>>>> WW3 no matter who is winning the electtions.
>>>>>>>> 
>>>>>>>> 
>>>>>>>>> I dream of some day finding a kid who gets the voltage divider right
>>>>>>>>> and has something intelligent so say about the next test, an NPN
>>>>>>>>> emitter follower. 
>>>>>>>> 
>>>>>>>> Ge or Si?
>>>>>>> 
>>>>>>> John mentioned a Vb of 0.6V so the 'student' is expected to know it's
>>>>>>> silicon. And of course, it's a Vbe of 0.6V and that distinction seems
>>>>>>> to trip up a lot of young folks, it seems. The Vb is 5. Once they get
>>>>>>> that straight, the rest of it falls into place easily enough. Should
>>>>>>> take < 30s for someone to figure out - and hopefully <<!
>>>>>> 
>>>>>> No, I said that one EE grad claimed that Vb (not Vbe) would be 0.6
>>>>>> volts to ground.
>>>>>> 
>>>>>> Can anyone here say about what the base and emitter voltages actually
>>>>>> are? Collector current?
>>>>>> 
>>>>>> +10 supply, two 10Ks making a divider into the base, 1K emitter to
>>>>>> ground, typical small silicon NPN.
>>>>> 
>>>>> Depends on the beta, if YOU assume beta is huge ( >=300 or so)
>>>>> then base will be at about 5 V, emitter at about 4.3 V 
>>>>> current will then be 4.3 / 1000 or 4.3 mA
>>>>> (I always go for .7 V Vbe for some reason)
>>>>> 
>>>>>> Extra credit: anything else to say?
>>>>> 
>>>>> For a lower beta (may be as low as 10 for for example a power NPN)
>>>>> you need to take into account the base current that will among other things 
>>>>> decreae the base voltage followed by a lower emitter voltage...
>>>>> 
>>>>> Are credits chocolate?
>>>> 
>>>> Yes.
>>>> 
>>>> https://www.dropbox.com/scl/fi/7pmkpe7468dgzaatxi50w/Eng_Choc.jpg?rlkey=nmefiui4eqbzfzvhjdhbxcqla&raw=1
>>>> 
>>>> We have a direct account with Lundt.
>>> 
>>> Amazing, I ordered some of these 2 weeks ago,
>>> https://www.bol.com/nl/nl/p/verkade-puur-intens-12x-111-gram/9300000158912440
>>> all gone now :-)
>>> So yesterday I went shopping, got new ones...
>>> When winter comes a hot chocolate drink is good too, add some sugar:
>>> https://www.ah.nl/producten/product/wi127402/blooker-cacaopoeder
>> 
>> It makes no sense that europeans are a zillion miles from the places
>> that grow chocolate, but make such good stuff. The Ritter Sport dark
>> stuff is great.
>> 
>> 
>
>Nah, it’s all from the sun-drenched tropical mountains of Holland. 
>
>Cheers 
>
>Phil Hobbs 

There's actually a ski resort in the Netherlands.