Variable Voltage Source.

Turn On/Off with the letf button.
Adjust voltage using the dial (0 to max voltage).
Button shows current voltage output.

Property: (default value)

- Current value: (0 V)
   Current voltage output.

- Maximum Voltage: (5 V)
   Maximum voltage (positive or negative value).
   Must be > Minimum Voltage.

- Minimum Voltage: (0 V)
   Minimum voltage (positive or negative value).
   Must be < Maximum Voltage.
