PCB Design Rules Group - Page 18

Group Administrators: 0 | Group Member: 199 | Group Threads: 289

Initially PCBs were designed manually by creating a photomask on a clear mylar sheet, usually at two or four times the true size. Starting from the schematic diagram the component pin pads were laid out on the mylar and then traces were routed to connect the pads. If you have many questions of PCB Design, please come here!

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3 comments

722 views

How to center the grid to a pad in 4.0 RC 1?

I can center the grid to a pad in 2013 veresion of RC. Is it possible in 4.0?(view more)

Ben

2016/9/18 23:43:13

3 comments

854 views

PCB design for high-speed TTL

I am designing high-speed TTL-based processor. I will be using fast AC, ACT and LVC series, so switching frequencies will be in 100Mhz range with 1-3ns fronts. I plan to use double-sided PCB, Bo...(view more)

Lukas Krehel

2016/9/16 16:16:50

3 comments

927 views

The method of making traces on an universal PCB

I'd like to know best way to make traces on universal PCB's with individual holes.(view more)

Jukka Ainali

2016/9/15 21:53:15

4 comments

922 views

Why people prefered for 45 degree angles in PCB routing?

I've fond that every single modern PCB is routed at 45 degree angle increments. Why does the industry prefer this so much? Doesn't any-angle routing works better?(view more)

Thomas Cobb

2016/9/15 11:08:09

3 comments

740 views

The way of turning off GND airwires

How to toggle visibility of the GND airwires in the ratsnest?(view more)

Telesound Bt.

2016/9/14 8:53:04

4 comments

942 views

PCB trace GSM antenna be affected by EMI

There is a PCB design with 3 SIM800 GSM modules sharing a external antenna. The external antenna is connected to the PCB via an antenna connector, and from that connector, the antenna signal is “sh...(view more)

nopphadon

2016/9/12 23:23:51

1 comments

1340 views

How to add vias in Cadstar

I try to add a via in Cadstar and I think I can add a via with the add a via command manually. But I failed. What should I do?(view more)

Elhanafy

2016/9/11 21:18:43

2 comments

816 views

The reason of PCBs have big interfaces

Although the lines leaving the IC in the middle start fairly close to each other, they are significantly separated through the edge of the PCB. The width of and spacing between the leaving lines are ...(view more)

Jeronimo F Atencio

2016/9/10 10:54:31

1 comments

705 views

Is there a way to lock footprint pad changes in PCB while reload the netlist?

I changed pad net name in PCBnew, but the change reverted when I reload the netlist. Is there a way to lock the changed name so that they will not reverse?(view more)