Quantcast Voltage surge suppression

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TM 5-683/NAVFAC M-116/AFJMAN 32-1083
Figure 7-5. Transitor Testing: a) PNP type, b) NPN type.
7-5. Voltage surge suppression.
With this data, it is possible to determine if a dis-
turbance is harmful or not by comparing it with
Voltage surges on a power system are a common
specific tolerance requirements for the sensitive
power problem experienced by sensitive electronic
equipment actually used on site. This tolerance in-
equipment and mostly seen by the computer user.
formation is generally available from sensitive
These transients can be the cause of lost data, false
equipment manufacturers upon customer request.
triggering and equipment failure. These transients
With the expanded waveform capability, it is often
are generated both internally by the user and exter-
possible to examine transients and observe a char-
nally on the utility primary due to lightning and
acteristic "signature" which will identify the source
of the disturbance.
equipment switching. Many different types of volt-


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