The diagram on the cover sheet is already meaningless, but the best part is comparing that to the diagram on page 8.
If they stopped trying to be cute and just drew what the thing actually is, there'd be no confusion...
Also, they stick a capacitor in there -- as they must -- but don't document it, anywhere. So who knows if this thing is usable in a current sourcing inverter.
Tim
Also looks like they may have added a separate D-S diode ? Not very good recovery specs and the diode voltage (I think) looks a bit too low to be the normal GaN turn-on when reversed biased ?
boB
There's always confusion. Some people can't think straight, no matter how vigorously their thought processes are prodded.
Symbols only have meaning in the eye of the beholder.
It would be nice if people used the same symbol every time to represent the same object, but as long as there enough features in the symbol to make it an unambiguous representation of the real thing being represented where's the problem?
They also have mixed time units of nS (delays) and ns (recovery time); but that's a pet peeve of mine.
Aren't nanoSiemens (nS) units of electrical conductance, while nanoseconds (nsec) are units of time?
Not according to them, nor Tektronix :(
nsec obviates ambiguity in most cases but ns (small s) is commonly used in datasheets. That's where the confusion sometimes occurs.
That's nothing. Some people draw resistors as BOXES, and pots as boxes hit by arrows. Some people actually draw an AND gate as a square with an ampersand inside. People use reference designators for things that don't exist, like TR3 and IC12 and RLY2 and POT1. It's the Wild West out here.
SI symbols; S = Siemens, s = seconds
When I was a kid, instead of Siemens, it was Mhos
e.g. 300 milli-mhos
Den tirsdag den 20. februar 2018 kl. 22.18.08 UTC+1 skrev boB:
you must be very old, mho (ohm spelled backwards) was replaced by Siemens in 1881 ;)
There are standards that say you ought to do that. Boxes are certainly quicker to drawn than zig-zags, and you can put text inside the box.
Thee's a standard that prescribes that too. It's idiotic, but that never stopped he kind of people who invent new "standards".
Tr3 strikes me as better, and most places I've worked have used U12 rather than IC12 (short for integrated circuit), but there's no accounting for taste - not that California is known for good taste.
snip
The box resistor is a British thing. Reference designators have some standardized calls, but there is no rule that they have to follow.
That is why a simple diode can show as "D1" or as "CR1".
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