David Nebenzahl wrote:

On 6/19/2010 8:35 AM Adrian Tuddenham spake thus:

David Nebenzahl wrote:

Someone else made a comment in another thread here about weird
schematics (like for home appliances).

[...]
... wire-connecting/jumping convention: here I much prefer the
modern approach, which is to use a dot for a connection and no dot for
no connection, rather than the clumsy "loop" to indicate one wire
jumping over another with no connection.

I find the 'gap' convention is easy to draw (with a computer) and
extremely easy to read. It also looks tidy. Four-way junctions which
could be mistaken for crossings should never be used, they should be
staggered instead.

e.g.
http://www.poppyrecords.co.uk/compto...sAmplifier.gif

BZZZZZZT! Fail.

While the gap thing looks OK for non-crossing wires, I have to ding the
drafts-person of that schematic for the following:

o Idiosyncratic symbols for electrolytic cazapitors...

It appears that you had no difficulty identifying them, so they
succeeded as symbols. The polarity is also a lot more 'intuitive' than
the conventional symbol.

o Idiosyncratic ground symbol (one horizontal line????)

Again, you recognised it without ambiguity and it isn't all that
unusual:
http://www.ortodoxism.ro/datasheets2...qfjx9qjc3y.pdf


o And no, I disagree about those offsets for connecting wires.

That's totally unnecessary he it would be quite obvious that all
those vertical wires connect to what is obviously a bus or rail. A
well-drawn dot is all that's needed there.

That's your preference, but I prefer offsets because they are utterly
unambiguous, even in a poorly copied drawing.

(And I don't much like their transistor symbols either)

For junction transistors they are incorrect, I agree, but I have become
used to them. I find it takes me a while to get my mind around the
correct symbols because they are so rarely used nowadays

Just for fun, I've replaced the point-contact symbols in that drawing
with the correct junction ones:

http://www.poppyrecords.co.uk/compto...Amplifier2.gif

The wrong symbols have become so well-estabilshed nowadays that I doubt
if most people even noticed they were wrong.

--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk