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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 71,307 of 72,318   
   jurb6006@gmail.com to All   
   Re: Teaching Transistor Theory   
   14 Jul 19 06:52:32   
   
   So they discovered oil and started building cars. Big deal.    
      
   And what's this approach bullshit ? Just explain how the thing works and   
   that's that. Who Shockley was means jack shit. Where it happened means jack   
   shit. When it happened means jack shit.    
      
   The principle that needs to be taught - bipolar transistor. You put current   
   through the base emitter junction and it causes leakage from the collector.   
   ALL TRANSISTORS ARE COMMON EMITTER, only its orientation with respect to   
   common is what changes.    
      
   Ohm's law, fuck all that sigma this and delta that. Your car has two   
   headlights. They pull 3 amps each because they are four ohms with 12 volts on   
   them. That adds up to 36 watts because watts are amps times volts. When you   
   have two of them in parallel it    
   is still 12 volts but now that pair of them is pulling six amps because two   
   four ohms in parallel comes to 2 ohms. So 12 volts times 6 amps is 72 watts   
   for the pair.    
      
   One paragraph. Who cares who Ohm was, or Watt, or Volta. Who cares how many   
   columbs in an amp. Who even cares if you are paying attention to electrons or   
   holes ? Suffice it to say there are two polarities.    
      
   Are you teaching someone how to design transistors ? I kinda doubt that.    
      
   One guy I taught uses it all the time at work, and makes more money than me,   
   GRRRR.    
      
   I am an autodidact like 90%. I agree they teach wrong. Like 180ยบ is the same   
   as inversion. Try it with a sawtooth buddy. And they teach you about car   
   batteries, the acid the ions and ll that shit. Fuck it, just charge it and   
   shut up. When it doesn't    
   take a charge either put epsom salts in it or buy a new one. Do I have to be a   
   chemist to fix a Marantz amp ? (well actually there was this one...some other   
   time)   
      
   Transistors. someone invented them. We got them. They work like such...and you   
   order them online from like Digikey or Mouser, or actually Newark has been   
   better on a couple of things. Bam. Want to know who figured it out ? I don't   
   know the guy, and he is    
   dead. That's it.    
      
   When i was younger I had what was called a science encyclopedia. One of those   
   send you a volume a month. I read it cover to cover EXCEPT the bios on   
   inventors etc. Later in life I got interested in that and read those. I found   
   it interesting. for one,    
   many innovators and inventors were either off the boat or first generation   
   here. AND, even in the old days, some of them lived to be 80 or so. See, human   
   life span has not gone up, the AVERAGE lifespan has. It does not mean the same   
   thing, it just means    
   less people get killed now. And now we're overpopulated, see, the old way was   
   better.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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