New answers tagged schematics
4
I wouldn't bother looking for tools and I would bypass truth tables and go straight to VHDL (or Verilog if you prefer). Given the schematic shown and a few coloured pens, this will take a few minutes, maybe up to an hour for a sheet as simple as the one you posted.
Presumably the whole circuit is many such sheets.
And I am assuming they are all similar to ...
2
Eagle wants you to put junction points where two lines connect each other. Otherwise gives a warning in ERC (Electrical Rule Check). I suggest you this notation;
This way Eagle becomes sure, if it's a connection or just a different net passing over. To put junction points you can use 'Junction' from toolbar. But if you draw your nets with 'Net' tool ...
0
I have also seen some websites like
http://www.edgefxkits.com
http://www.elprocus.com
which are having some good projects ideas from basic level to middle level. Once you may check it.
3
The designer has tried to indicate on the schematic the way the grounds should be separated, and done a reasonable job with the standard symbols available to him.
There ought to be a detailed description and written guidelines in the datasheet, and recommended PCB layouts either there, or in a separate Application Note (if you look up this chip on the TI ...
2
In this case, it is a matter of context. The symbols are denoting separate grounds, and that's where their meaning ends. It is very unlikely the power ground is tied to the chasis, and the digital ground is tied to earth. More likely, both grounds would go back to the negative terminal of the battery. Any time there is a possibility for confusion like this, ...
2
IEC60417 is the supposed standard to which symbols in Europe (as a minimum?) should adhere to but I reckon there is no legal obligation except for protective earth (PE). Here's a picture: -
Notice #5019 - this has to be used when a protective earth is specified and I've seen them on various boxes and bits of equipment to signify just that - it is the ...
2
For simulation puropses, XMPPWocky's answer is good - you need to either make it from components available in CircuitLab or if you were using SPICE you would probably use a macro model (or possibly subcircuit) to describe the behaviour.
However, if you are wanting to draw a proper schematic and possibly produce a PCB, then getting hold of a proper EDA ...
1
simulate this circuit – Schematic created using CircuitLab
CircuitLab does not support it, so the schematic above is useless in this context. But the drawing above is typical for programs that can support buses, bundles and arrays. Provided as a reference for future searches, nomenclature will vary according to tool used.
To translate: it ...
2
You could do this in two ways:
Model it using the Custom Part model. However, this would not actually act like a shift register; it would prevent you from getting useful results out of simulation. However, it is more compact than the second option.
Model it as a chain of flip-flops (which it actually is, internally). This would make simulation possible. ...
2
If the dots were on the same side, your circuit schematic would have be drawn with crossing wires, like this:
simulate this circuit – Schematic created using CircuitLab
By adding the dots to the coils, we clarify that the orientation of the coils is important. And by allowing ourselves to put the dots on either end, we gain a the freedom to ...
2
The dots tell you the relative orientation of the windings. Without them, you don't know the polarity of the voltage coming out of the secondary with respsect to the primary. In many transformer applications that doesn't matter, but when it does the dots need to be shown on the schematic.
The way to read the dots is to imagine current going into the ...
6
Those are phase dots. They refer to the 'start' of the winding based on a predetermined winding direction (CW or CCW). This allows you to tell at a glance what 'polarity' the windings have so you can figure out how the current will flow.
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