When attached sheet when i am doing DRC why did it not shown error even there is no proper connection with led
H16.pdf (67.3 KB)
For schematics, the check is called ERC!
After doing any change at schematic you have to Update PCB from schematic to make DRC knew needed connections and show you if someting that is connected at schematic is not connected at PCB.
If you ask about schematic only then: I don’t see lack of connection there (LEDs are reversed but connected).
The schematic that it’s about:
ERC is a simple mechanism, that just checks pin types. It’s not a spice simulator.
sorry . yes ERC. but when i draw a wire & there is not proper junction , why it did not shown in ERC ?
how can see ERC error while there is no proper junction with wire. Suppose in schematic’s there is no proper connect wire & junction then how can u justify ?
What is the basis of your claim that there is no junction?
How would ERC know that you meant to connect a wire?
And, BTW, your LED is backwards.
Why you say there is no proper junction?
As I have said previously: “I don’t see lack of connection there (LEDs are reversed but connected).”
You claim that something is not shown while ERC. But what is not shown that you suppose should be shown?
U1 pin 1 is connected with D1 and D2. What wrong with this connection? Why you expect this connection should be shown from any reason while ERC?
There is a simple way to verify a propper connection:
Drag one wire of the connection. If the “connection” breaks, it is no connection.
suppose with wire there is no junction proper connect then does it show in ERC…i will also try to upload its image
by mistake i upload wrong file. i will try to show my exact problem.
If there is no junction then that is a crossover which may or may not result in an ERC issue.
You can’t expect ERC to check your circuit design for you. You have to know what you want to achieve and design the schematic accordingly. For example ERC will not tell you that your two LEDs are wired backwards, as others have already mentioned.
Thanks …noted. Understood. clear