# Power connector

You only need a power connector if you want to create a printed circuit board. If no power connector is present, logic parts, digital inputs and outputs, digital ICs, and microcontrollers will simulate using the default supply.

Tips for use:

- Power connectors allow you to provide a variable voltage supply. You can include a switch to turn the supply on and off.
- Use more than one power connector if you wish to give different types of parts different voltage supplies. You can choose the type(s) of parts supplied by a power connector in its Properties pane.
- A part's pop-ups inherit their voltage supply from the scene that contains the part unless the pop-up has its own power connector and voltage supply. The voltage supply in a PCB 3D space is independent and does not inherit the supply from the main scene.
- If the voltage supplied with a power connector is below the minimum voltage for a given family of parts (2 V or 3 V), these parts will show a supply voltage of 0 V. The minimum voltage is 2 V or 3 V, depending on the family.

## See also:

- Making hidden voltage supplies explicit
- Using electronics parts