Why does there seem to be a missing component in many PCBs?

2017/1/19 17:41:48

pcb component

I've seen some PCBs were some components have been sketched, but they don't seem to be mounted on the board. See, this image 
where the transformer has been drawn: Why is this done on some circuits?

• 408
• 1
• 15

Post Comment

jorgedavid907

2017/1/21 17:41:48

I am going to keep checking for new writings.

You might like

• 

  My Full Review and Experience with ALLPCB

  • 11
  • 13
• 

  Price or quality?

  • 44
  • 10
• 

  Free PCB Board by ALLPCB Sponsorship

  • 64
  • 5
• 

  Lead-free Solder Paste for 0402 Metric Chip Components

  • 13
  • 4