Quote from: jimilee on December 19, 2022, 04:35:10 AM
Pin is the actual solder pad for the input and outputs. VC is +9v VB is usually +5v, or there about, usually. In the power section, you will see a voltage divider, which is typically two resistors with the VB flag between the two. This schematic doesn't feature this particular feature.Hope this helps
This was very helpful thank you!