Breaking News
Comments
Newest First | Oldest First | Threaded View
<<   <   Page 4 / 4
_hm
User Rank
Author
needs notes and some values
_hm   10/21/2013 6:13:42 PM
NO RATINGS
If schematic is annotated with some notes and few caluculated values, it is further helpful to many people for future reference.

Bert22306
User Rank
Author
Crictui diagrams are another art form
Bert22306   10/21/2013 4:16:38 PM
NO RATINGS
They have to look good, for heaven's sake, like any other art form. In the tube days, the tubes were often lined up on top, and all the passive components feeding them underneath. In the early transistor days, I noticed the same drawing style. But now, and I think for good reason, the active components are not typically separated.

There's nothing like a well executed, complementary symmetry analog circuit diagram, NPN on top, PNP on bottom, IMO. I like the power supply bypass capacitors to be shown close to the component they are bypassing for. And yes, chips tend to not have their inner workings show, because aside from the simplest of chips, that would be practically impossible.

David Ashton
User Rank
Author
Schematics
David Ashton   10/21/2013 3:45:55 PM
NO RATINGS
HI Bill.  I loved the old transistor radio schematic (being British by extraction I still prefer Circuit Diagram even though it takes longer to say and write).  Obviously from a coil manufacturer trying to sell his wares (note the list of trnasistor types you can use at the bottom!)

I think the nice thing about diagrams like this is that you have the power rails running along the top and the bottom and it's obvious what they are.  Looking at the EDN one, one IC is supplying the other two ICs but It takes a bit of examination to find this.

The worst as you say are MCU diagrams where the tendency seems to be to put ICs in isolation with a funny shaped box on each pin with a cryptic signal name in each.  Somewhere on the rest of the diagram is another box, going into another IC, with the same signal name.  Look, Ma, no wires! :-)     But to be fair some of those circuits would be very difficult to draw without looking like spaghetti.

I recently had to trace the circuit of a drill charger from its PCB.  I ended up with a real rats nest on a piece of paper.  I managed to draw it properly with only 2 crossovers.   It made it obvious how the circuit worked. and I  found the tidying-up process very satisfying.

 

 

Caleb Kraft
User Rank
Author
Re: Schematic styles
Caleb Kraft   10/21/2013 3:11:37 PM
NO RATINGS
great, another aspect of design that I can do poorly!

dt_hayden
User Rank
Author
Schematic styles
dt_hayden   10/21/2013 2:45:12 PM
NO RATINGS
Schematic styles are always an interesting thing to observe.  Do you try and fit it all on 1 page or spread it among several pages where signal flow is not as easy to follow?  Do you keep it architecturally flat or use the logical, but hard to follow, hierarchical design?   Do you place critical components like decoupling capacitors near their respective integrated circuits, or show them all in a common area connected to supply rail?  Do you make it clean looking by using wire stubs with node names for virtual connections, or make it easier to follow by showing complete lines of connectivity?  Do you use descriptive net names to aid in understanding, communicating, and documenting degugging efforts?  Do you include net name locators for on-sheet of off-sheet connections, or leave the user to search the schemtic to find them?  How do you deal with multiple grounds?

One general observation I have made over the years is the folks responsible for implementing and debugging systems have a drastically different approach from folks whose primary design responsibility is ASICs or FPGAs.

 

<<   <   Page 4 / 4


Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
Protecting sensitive electronic circuitry from voltage ...
09:45
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Watch as a web server authenticates or rejects a water ...
Protecting sensitive electronic circuitry from voltage ...
Power can be a gating factor in success or failure of ...
Get to market faster and connect your next product to the ...
00:44
See how microQSFP is setting a new standard for tomorrow’s ...
The LTC3649 step-down regulator combines key features of a ...
Once the base layer of a design has been taped out, making ...
In this short video we show an LED light demo to ...
The LTC2380-24 is a versatile 24-bit SAR ADC that combines ...
In this short video we show an LED light demo to ...
02:46
Wireless Power enables applications where it is difficult ...
07:41
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27