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196 Keysight E3633A and E3634A User’s Guide
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 E3633A and Keysight E3634A power
supplies 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 power supply is essential to keep internal temperatures low. To assist in
cooling the power supply, the sides and rear of the power supply should be kept
clear.
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