PCB Design Rules Group - Page 27

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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4 comments

862 views

Ground Plane of PCB

I am a green hand to pcb design, I build custom tube audio gear. And using a PCB may be better for some gears. If using a large ground plane on the top as well as the bottom of the pcb,will there be ...(view more)

Michele Deligio

2016/5/4 19:40:50

3 comments

764 views

What frequencies are when the pcb design get tricky?

The project on my hand now is a 20MHz SPI bus shared between four devices,now I have problems with this project and look for general guidelines. 1.How to prevent long traces from radiating when frequ...(view more)

Giovanni Romanelli

2016/5/4 12:45:50

2 comments

772 views

Questions of double Sided Pcb?

I have a few questions of manufacturing PCB two layers PCB: 1.Before printing, what should I do? Mirror the image of top layer? 2. How exactly do I make a via? 3. What's the best way to align the side...(view more)

Borut Poljsak

2016/5/4 10:13:51

1 comments

713 views

How can I name the newly designed PCB?

As I am designing a new PCB and still don't know how to name it.Could you please give me some ideas?(view more)

Carl

2016/5/1 21:42:59

1 comments

808 views

I still need software coding to create a device

Now I wish to create a device to make it call a phone number when the direct current volt supplies. Additonally,I still need software coding.(view more)

Ben

2016/5/1 20:07:56

1 comments

827 views

The way of multilayer PCB connecting

I do not know how 2 sides are connected, I see on some PCBs there are some circular end points, so it must be going to other side. But how is it connected ?(view more)

Enrico Gensale

2016/4/30 16:35:10

2 comments

711 views

PCB Part pin placement

I have a gas sensor part with 4 pins placed around a 13.5mm diameter circle. 3 of the pins I have figured out how to make my PCB cad symbol, but I do not know where to locate the pin labeled CO Work...(view more)

Andy

2016/4/30 10:39:21

1 comments

779 views

Copper pours and nets

There is a ground node copper pour on the bottom layer that automatically connected itself to all the ground pins on the PTH components,but the software stil show that those pads need to be connected...(view more)