AMETEK XG Family Programmable DC - Manual (Page 43)

Installation
M370430-01 Rev E 2-13
2
Inductive Loads and Batteries
CAUTION
The XG power supply requires freewheeling and blocking diodes across
the output while driving inductive loads or batteries to protect the power
supply from damage caused by power being fed back into the supply and
from high voltage transients.
Selecting
Diodes The diode must have a voltage rating at least 20% greater than the power
supply's output voltage and have a current rating greater than or equal to the
power supply's output rating. Connect the cathode to the positive output and the
anode to the return.
Where positive load transients such as back EMF from a motor may occur,
connect a Transient Voltage Suppressor (TVS) or a varistor across the output to
protect the power supply. The breakdown voltage rating for the TVS or varistor
must be approximately 10% higher than the rated supply output.
Figure 2-3 Diode Placement
For a detailed Application Note, please go to:
www.programmablepower.com and click SUPPORT.