I may be dense, but I’m just checking to see if there are schematic symbols in the library for these two relatively common parts:
Autotransformer (transformer with a singled tapped winding)
Gas-discharge tube (xenon strobe)
I know I can ‘roll my own’ (and have), but these parts should be common enough to be in the libraries already? I ended up turning off many libraries since they consist mostly of component-specific symbols, whereas the symbols I tend to use are mostly ‘standard’ components.
In Kicad, Tubes (Tube symbols) are called 'Valves"
Transformers are called Transformers…
type the name in the Symbol panels search field…
a Stock Transformer…
autotransformer: not seen
discharge tube: library Device–>GDT_2Pin / GDT_3Pin
That GDT symbol looks to me more like one of these:
https://www.newark.com/epcos/b88069x8870b502/surge-arrester-230v-through-hole/dp/05AC7913
The symbol I was thinking of:
As for the autotransformer, I’ll just use the 1P/1S symbol after all.
For auto transformer you will likely need to copy the transformer symbol, modify it and save in a personal library. Shouldn’t be too difficult as you only need to move existing parts around and maybe delete pin 4.
I can open a MR for something like:
Until then you can paste the following into Symbol Editor.
(symbol "06-09-06_Transformer_Form2" (pin_numbers hide) (pin_names hide) (exclude_from_sim no) (in_bom yes) (on_board yes)
(property "Reference" "T" (at -10.16 0 0)
(effects (font (size 1.27 1.27)))
)
(property "Value" "06-09-06_Transformer_Form2" (at 0 0 0)
(effects (font (size 1.27 1.27)) (hide yes))
)
(property "Footprint" "" (at 0 0 0)
(effects (font (size 1.27 1.27)) (hide yes))
)
(property "Datasheet" "~" (at 0 0 0)
(effects (font (size 1.27 1.27)) (hide yes))
)
(property "Description" "Autotransformer, Power, Single line, Form 2 06-09-06" (at 0 0 0)
(effects (font (size 1.27 1.27)) (hide yes))
)
(property "ki_keywords" "iec symbol generic" (at 0 0 0)
(effects (font (size 1.27 1.27)) (hide yes))
)
(symbol "06-09-06_Transformer_Form2_0_1"
(arc (start -5.08 -0.0318) (mid -3.81 -1.286) (end -2.54 -0.0318)
(stroke (width 0.254) (type default))
(fill (type none))
)
(arc (start -2.54 -0.0159) (mid -1.27 -1.2701) (end 0 -0.0159)
(stroke (width 0.254) (type default))
(fill (type none))
)
(arc (start 0 -0.0318) (mid 1.27 -1.286) (end 2.54 -0.0318)
(stroke (width 0.254) (type default))
(fill (type none))
)
(polyline
(pts
(xy -5.08 5.08)
(xy -5.08 -5.08)
)
(stroke (width 0.254) (type default))
(fill (type none))
)
(polyline
(pts
(xy 0 0)
(xy 0 -5.08)
)
(stroke (width 0.254) (type default))
(fill (type none))
)
(polyline
(pts
(xy 5.08 5.08)
(xy 5.08 0)
)
(stroke (width 0.254) (type default))
(fill (type none))
)
(arc (start 2.54 -0.0159) (mid 3.81 -1.2701) (end 5.08 -0.0159)
(stroke (width 0.254) (type default))
(fill (type none))
)
)
(symbol "06-09-06_Transformer_Form2_1_1"
(pin passive line (at -5.08 7.62 270) (length 2.54)
(name "PA" (effects (font (size 1.27 1.27))))
(number "1" (effects (font (size 1.27 1.27))))
)
(pin passive line (at 5.08 7.62 270) (length 2.54)
(name "PB" (effects (font (size 1.27 1.27))))
(number "2" (effects (font (size 1.27 1.27))))
)
(pin passive line (at -5.08 -7.62 90) (length 2.54)
(name "SA" (effects (font (size 1.27 1.27))))
(number "3" (effects (font (size 1.27 1.27))))
)
(pin passive line (at 0 -7.62 90) (length 2.54)
(name "SB" (effects (font (size 1.27 1.27))))
(number "4" (effects (font (size 1.27 1.27))))
)
)
)
The xenon-tube was common in the Disco years, but not so much any more.
Anyway, just draw it yourself using the Symbol Editor. An experienced user will need 3…5 minutes, a beginner perhaps 10.
Warning: you need to put it in a personal library. The standard libraries are read-only.
Disco? I guess those who use strobe lamps for life safety applications never got that memo.
Funny how there are literally thousands of symbols for specialized components that, for many users, may never be needed / used, yet we have to ‘roll our own’ components you would expect to be in the ‘Device’ or some other ‘basic’ library… /rant
And who do you think should do this work? Maybe you can contribute your symbol when you’re done with it.
The “Device” lib contains a ‘Lamp_Flash’ symbol.
Just wondering, how often those 2 components are used in the world these days?
That would work. It illustrates the functionality correctly.
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