Society of Robots - Robot Forum
Software => Software => Topic started by: MaltiK on April 09, 2009, 10:36:02 AM
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I was looking at a schematic, and I wanted to make an .sch out of it, so I started from scratch, making every DIP. And then I got to the point where I was stuck. How do I make the parts circled in teal. Are they all connected on a common rail?
http://i99.photobucket.com/albums/l303/_Corrupt_/orig2.gif (http://i99.photobucket.com/albums/l303/_Corrupt_/orig2.gif)
Also how do I make a micro stripline in EagleCAD?
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Those are all ground connections. The symbol is a ground symbol. Those connections would all be connected together.
That is an ugly schematic with parts upside down, sideways, and pins not labeled. Plus in an RF circuit the capacitor types should be called out at the very least.
ETA: My point in complaining about the schematic is that there is more to circuit design than replicating a schematic. This GIF image does not capture many of the things about this design that need to be documented.
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Those are all ground connections. The symbol is a ground symbol. Those connections would all be connected together.
That is an ugly schematic with parts upside down, sideways, and pins not labeled. Plus in an RF circuit the capacitor types should be called out at the very least.
ETA: My point in complaining about the schematic is that there is more to circuit design than replicating a schematic. This GIF image does not capture many of the things about this design that need to be documented.
Yea you are right, I searched the pinout datasheet for two of the chips, and they are upside down, unfortunately this is the best schematic I could find, that didnt require SMT, MCUs, or programming, thanks thought.
Also what do you mean "called out" capacitors? The cap values are labeled.
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i think he means the type of cap.
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Those are all ground connections. The symbol is a ground symbol. Those connections would all be connected together.
That is an ugly schematic with parts upside down, sideways, and pins not labeled. Plus in an RF circuit the capacitor types should be called out at the very least.
ETA: My point in complaining about the schematic is that there is more to circuit design than replicating a schematic. This GIF image does not capture many of the things about this design that need to be documented.
Yea you are right, I searched the pinout datasheet for two of the chips, and they are upside down, unfortunately this is the best schematic I could find, that didnt require SMT, MCUs, or programming, thanks thought.
Also what do you mean "called out" capacitors? The cap values are labeled.
Resistors as a simple example:
Resistors are valued in ohms. If you are just learning about them (learning ohms law) their value in ohms might be the only thing that you worry about. But then you find out that resistors also have a power rating in watts. I have 1/4 watt and 1/8 watt resistors for general use in my lab. That is OK for many of my circuits. But I also have some values in 1/2 watt, 1 watt, 10 watt, etc, because there are times when I have to consider, in a circuit, the power that the component needs to dissipate. Resistors also come in carbon, film, wire-wound, etc where a design in radio frequency has to consider the effects of the resistor type.
MUCH more so for capacitors. They have more than a value in microfarads, and many different characteristics for the type that are dominant in RF circuits.