Thank you Rodalco.
Ron H,
I haven't been baffled by that one no,
but i do get confused over the FET symbols, those i do have to look
up in my 'little book', i cant be bothered to remember which is which.
I suppose thats not quite the same as baffled.
Optikon,
I do agree about wiring schematics in power stations in particular.
Ive worked in power stations, and sometimes i have had to re-draw
bits just for my own use.
It is as though the draughtsmen making the drawings just used to
make up symbols as they went along. Especially the older drawings
which only get pulled out if something goes wrong.
I remember one occasion there was a group of us slowly deciphering
a Polish or Russian schematic for a relay panel on a small gas
pressure boosting unit, you would not think that could be so very
exasperating, but as i recall quite a few of the items were boxes
containing numbers.
Like resistors are often drawn now, not as a zig-zag, but a long box
with maybe a number in it or next to it.
Personally i think a zig-zag is an excellent representation for a
resistor.
Writing things for a schematic wouldn't be so bad, but it was not
written in English.
And as Optikon says there are many different ways of representing
coils and contacts, let alone the unoficial ones and the just plain
made up ones.
So yes, there have been times when i've been stuck and had to ask for
help with diagrams, and other stuff too. Luckily not often.
Which reminds me,
i have an item inherited from my father's stuff, which i can not make
head nor tail of.
Its a curious rotary unit, i will do a thread, hopefully someone will
be able to tell me something about it, or maybe someone will know
what it is, or recognise it.
I shall call the thread "Curious rotary unit"
Regards, John