Pololu Orangutan SVP - Manual (Page 11)

jumper attached to just the middle pin of each of the two servo power selection banks. In this default orientation,
the jumper supplies no power to the servo power rail.
Orangutan SVP with key integrated hardware labeled.
Adjustable Voltage (VADJ)
In addition to the 5 V regulator that supplies VCC, the Orangutan SVP comes with an adjustable voltage regulator.
Both regulators can supply a current of 3 A. The adjustable voltage regulator draws current from the external
power supply, and produces an output voltage called VADJ. The trimmer potentiometer in the upper right corner
of the board determines VADJ. If you turn the trimpot all the way counter-clockwise, VADJ goes down to about
2.5 V. If you turn it all the way clockwise, VADJ rises to 85% of VIN. The adjustable voltage regulator will be off
when the main power is switched off.
In general, it is advantageous to power servos and other high-power devices from VADJ (instead of VCC),
because if the peripherals draw too much current for the power supply to handle the AVR will not be affected.
Pololu Orangutan SVP User's Guide © 2001–2012 Pololu Corporation
4. Module Pinout and Components Page 11 of 37