Keysight E3632A - Reliability

6 Tutorial 
Reliability
166 E3632A User’s Guide
Since up- programming speed is aided by the conduction of
the series regulating transistor, while down programming
normally has no active element aiding in the discharge of
the output capacitor, laboratory power supplies normally
program upward more rapidly than downward.
Reliability
Reliability of electronic semiconductor equipment depends
heavily on the temperature of the components. The lower the
temperature of the components, the better the reliability. The
Keysight E3632A incorporate circuitry to reduce the internal
power dissipation of the power supply and therefore reduce
the internal heat of the power supply. Maximum internal
power dissipation occurs at maximum current. The internal
power dissipation further increases as the output voltage is
lowered. A fan internal to the Keysight E3632A is essential
to keep internal temperatures low. To assist in cooling the
Keysight E3632A, the sides and rear of the Keysight E3632A
should be kept clear.