|
proto electrical stuff with leyden jars and poo poo is ok i think
|
#
?
Mar 17, 2015 06:59
|
|
|
|
| # ? May 15, 2024 04:40 |
|
|
oh telegraph is fine too but absolutely NO active circuitry
|
|
#
?
Mar 17, 2015 07:01
|
|
|
CANON 
|
|
#
?
Mar 17, 2015 07:06
|
|
|
|
|
#
?
Mar 17, 2015 07:16
|
|
|
the transatlantic telegraph cable was probably really exciting
|
|
#
?
Mar 17, 2015 07:18
|
|
|
i dont know what a diode is, but, well, it seems like a combo of di and node. a node is thing u ca access. and a di can go 2 ways. so like a 2 way access node? ^^
|
|
#
?
Mar 17, 2015 07:26
|
|
|
di(two) + electrode
|
|
#
?
Mar 17, 2015 07:32
|
|
|
Tvs diodes are cool too, but I guess they're just big zeners Honorary shoutout to gas discharge tubes
|
|
#
?
Mar 17, 2015 07:39
|
|
|
1N4148 cheap, fast, and a high enough current and reverse voltage rating for low power applications where you just need a diode
|
|
#
?
Mar 17, 2015 08:01
|
|
|
Silver Alicorn posted:di(two) + electrode thnx
|
|
#
?
Mar 17, 2015 08:19
|
|
|
I enjoy a good diode. semi conductor physics is interesting. sage [where is that mother fucker] linked to a good series of posts on elelectroincs it was good love electronics love the thing that is happening in mosfets bi junc trannies are not that cool though except the germanium ones they used to make the original fuzz face distortion boxes
|
|
#
?
Mar 17, 2015 08:58
|
|
|
1N4004 or 1N4007 or one of these huge 1/4"-1/2" diameter diodes I got a while back.
|
|
#
?
Mar 17, 2015 10:16
|
|
|
the thing that fucks me up about diodes is that the symbol for them is loving backwards because of conventional current.
|
|
#
?
Mar 17, 2015 10:17
|
|
|
Bloody posted:actually, it is almost certainly much better precisely because it is not lol if you don't use bespoke hand crafted diodes (my semiconductor physics prof actually did this in grad school)
|
|
#
?
Mar 17, 2015 15:09
|
|
|
conventional flow is correct.
|
|
#
?
Mar 17, 2015 16:41
|
|
|
echinopsis posted:I enjoy a good diode. bjts are cool shut your mouth
|
|
#
?
Mar 17, 2015 16:52
|
|
|
Sizone posted:the thing that fucks me up about diodes is that the symbol for them is loving backwards because of conventional current. actually it isn't who flipping cares where the electrons really really go, not me, so therefore it's fine.
|
|
#
?
Mar 17, 2015 17:03
|
|
|
Bloody posted:bjts are cool shut your mouth they are the least cool
|
|
#
?
Mar 17, 2015 19:28
|
|
|
electrons flow opposite the flow of current, because they're negative
|
|
#
?
Mar 17, 2015 19:30
|
|
|
Thread got bad
|
|
#
?
Mar 17, 2015 19:30
|
|
|
now that you goit here, yeah
|
|
#
?
Mar 17, 2015 20:22
|
|
|
mentally separating conventional current and electron current is the easiest part of understanding semiconductor device physics
|
|
#
?
Mar 17, 2015 20:27
|
|
|
apart from the use of the word conventional. its one of those words that over time.. well, why wouldnt someone think conventional in this context meant the true direction of electron flow? a better word would be, old or wrong current
|
|
#
?
Mar 17, 2015 20:29
|
|
|
i dislike the use of the terms typical and atypical antipsychotics. poor word choice. also regarding the conventional wisdom regarding diets, which referes to low-fat. sooner or later
|
|
#
?
Mar 17, 2015 20:29
|
|
|
conventional kənˈvɛnʃ(ə)n(ə)l/Submit adjective 1. based on or in accordance with what is generally done or believed if everyone knows electron flow is backward from "conventional" current, then shouldnt that mean conventional current is the correct one?
|
|
#
?
Mar 17, 2015 20:30
|
|
|
conventional flow is the flow that is used, by convention, since before the discovery of electrons
|
|
#
?
Mar 17, 2015 20:30
|
|
|
i.e. we already had a burgeoning electronics industry before the electron discovered, and it was surprising enough to find that it was negative. the convention was already ingrained at that point, and conventional flow is a perfectly fine model outside of special cases like vacuum tubes and semiconductors
|
|
#
?
Mar 17, 2015 20:42
|
|
|
i get that its just that conventional, as a word, referring to the old understanding seems short sighted
|
|
#
?
Mar 17, 2015 21:25
|
|
|
white guy muhammed posted:Thread got bad
|
|
#
?
Mar 17, 2015 23:09
|
|
|
goons posting about semantics. awesome
|
|
#
?
Mar 17, 2015 23:09
|
|
|
your braking my brian with thee's symantics
|
|
#
?
Mar 17, 2015 23:24
|
|
|
itt your granddad's pointless nerd fights
|
|
#
?
Mar 17, 2015 23:44
|
|
|
Gazpacho posted:itt your granddad's pointless nerd fights 
|
|
#
?
Mar 17, 2015 23:46
|
|
|
I am second from left
|
|
#
?
Mar 17, 2015 23:54
|
|
|
echinopsis posted:i get that no thats pretty much what the word means. conventional methods are the poo poo that people have been doing forever. it may not be right, but its what folks do
|
|
#
?
Mar 18, 2015 01:27
|
|
|
Silver Alicorn posted:i.e. we already had a burgeoning electronics industry before the electron discovered, and it was surprising enough to find that it was negative. the convention was already ingrained at that point, and conventional flow is a perfectly fine model outside of special cases like vacuum tubes and semiconductors e: god forbid you should ever have to work with active-low logic Gazpacho fucked around with this message at 01:57 on Mar 18, 2015 |
|
#
?
Mar 18, 2015 01:45
|
|
|
only time I've had to worry about electron flow vs conventional is when I was learning about pull up and pull down resistors. why does a pull down go between ground and pin instead of positive and pin?  because the electrons, and thus the electricity, is coming from ground or something idk 
|
|
#
?
Mar 18, 2015 01:58
|
|
|
see I just figured pullup/pulldown referred to logic levels, and keeping an input from just wandering arond picking up 0.000000000000001mv from someone walking by, and so the names are just fine?
|
|
#
?
Mar 18, 2015 01:59
|
|
|
well yeah, a pull down resistor pulls it down to logic level zero, but if the resistor is restricting the flow of electricity to keep it at zero, the conventional flow would put it between positive and the pin.
|
|
#
?
Mar 18, 2015 02:04
|
|
|
|
| # ? May 15, 2024 04:40 |
|
|
Please ignore the loving electrons and which way they're going, it makes no difference and your poo poo will work the same without confusing yourself this thread is gettin real wrong real fast
|
|
#
?
Mar 18, 2015 02:05
|
|