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Pimpom <Pimpom@invalid.invalid> wrote:
>On 21-10-2024 11:40 am, Jan Panteltje wrote:>
I agree about the resistor symbol, although I've gotten into the habit
And the old zig-zag symbols the US uses for resistors.....
--\/\/\/\/\--------
better
---====-----
2k2
of using the Euro-style rectangle.
I've created some dozens of component symbols for my CAD program.
I've created my own library for Claris Works, which I use for all my
circuit diagrams. I prefer wiggly resistors and no four-way junctions,
but I take a mix & match approach to the various standards.
>
My resistors are the old British standard.
My electrolytic capacitors are the pre-war German standerd (with my own
home-made symbol for non-polar types). The two-rectangles British
Standard is counter-intuitive nonsense and a nightmare to draw and
shade in.
Resistor marking is 4k7 but, below 1k, I put in the omega symbol to
avoid confusion.
Capacitor marking is similar: 2u2f, 1n5f etc.
Crossovers are indicated by a gapped line; four-way junctions are
*never* used (the ends of the lines can be staggered at 45-degrees if
necessary).
>
The one symbol I have never been sure about is a battery. Apparently
there were two different standards, one where the longer line
represented the positive and the other where it represented the
negative. I always indicate the polarity and the voltage alongside the
symbol.
e.g.
http://www.poppyrecords.co.uk/other/DualImpedanceAmplifier.gif
>
I've noever had anyone complain they can't understand a drawing like
that.
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