My first PCB layout

Juno60 · Joined: Feb 09, 2006 Posts: 27 Location: Germany

Hi folks,

I finally tried my first PCB layout. I took the VCA schematics of Ray Wilsons WP20.
Could anyone please check my design, if it's ok?

Thanks,
Chris

WP20VCA_PCB001.JPG

Description:

Filesize:

211.95 KB

Viewed:

400 Time(s)

This image has been reduced to fit the page. Click on it to enlarge.

scriptstyle · Joined: Jan 22, 2008 Posts: 250 Location: nj

is this for self etching? i did not compare this to rays schematic, but first thing i notice is that your GND trace to pin13 of LM3900 is to close to pins 14 and 12.

Uncle Krunkus · Posted: Tue Feb 02, 2010 2:53 am Post subject:

Inventor · Posted: Tue Feb 02, 2010 4:25 am Post subject:

Some things to consider:

1. If you rotate the 330k resistor in the middle, you can eliminate the trace that runs under the transistor, which is the finest detail on the layout.

2. It would be good to ground the floating pads, which it looks like you can do with your existing layout by just adding connecting traces.

3. The cap in the upper right can be moved to the left slightly and then you won't need to wiggle that trace all the way around the other parts.

4. Consider moving the +9V connection closer to the ground terminal and further from the chip to make soldering the connecting wire easier.

All in all I'd say it is an excellent first try at laying out a circuit, nicely done!

Les