scholarly journals DC-Link Protection and Control in Modular Uninterruptible Power Supply

2018 ◽  
Vol 65 (5) ◽  
pp. 3942-3953 ◽  
Author(s):  
Jinghang Lu ◽  
Mehdi Savaghebi ◽  
Yajuan Guan ◽  
Saeed Golestan ◽  
Juan C. Vasquez ◽  
...  
Keyword(s):  
Power Supply ◽  
Uninterruptible Power Supply ◽  
Uninterruptible Power ◽  
Protection And Control ◽  
And Control ◽  
Link Protection

Design of a Microcontroller-Based Passive Standby Uninterruptible Power Supply

2001 ◽  
Vol 38 (4) ◽  
pp. 330-337
Author(s):  
M. I. Jahmeerbacus ◽  
K. M. S. Soyjaudah
Keyword(s):  
Power Supply ◽  
Systems Approach ◽  
Top Down ◽  
Uninterruptible Power Supply ◽  
Control Functions ◽  
Uninterruptible Power ◽  
Protection And Control ◽  
And Control

This paper describes the design of a microcontroller-based passive standby Uninterruptible Power Supply (UPS), where the student applies a top-down systems approach to produce a working system. Such a project involves hardware-software co-design for realizing the relatively large number of detection, protection and control functions within the UPS.

scholarly journals Uninterruptible Power Supply Improves Precision and External Validity of Telomere Length Measurement via qPCR

2020 ◽  
Vol 1 ◽  
Author(s):  
Waylon J. Hastings ◽  
Dan T.A. Eisenberg ◽  
Idan Shalev
Keyword(s):  
Telomere Length ◽  
Power Supply ◽  
External Validity ◽  
High Performance ◽  
Epidemiological Studies ◽  
Storage Conditions ◽  
Amplification Efficiency ◽  
Uninterruptible Power Supply ◽  
Uninterruptible Power ◽  
The Impact

Abstract Technical challenges associated with telomere length (TL) measurements have prompted concerns regarding their utility as a biomarker of aging. Several factors influence TL assessment via qPCR, the most common measurement method in epidemiological studies, including storage conditions and DNA extraction method. Here, we tested the impact of power supply during the qPCR assay. Momentary fluctuations in power can affect the functioning of high-performance electronics, including real-time thermocyclers. We investigated if mitigating these fluctuations by using an uninterruptible power supply (UPS) influenced TL assessment via qPCR. Samples run with a UPS had significantly lower standard deviation (p < 0.001) and coefficient of variation (p < 0.001) across technical replicates than those run without a UPS. UPS usage also improved exponential amplification efficiency at the replicate, sample, and plate levels. Together these improvements translated to increased performance across metrics of external validity including correlation with age, within-person correlation across tissues, and correlation between parents and offspring.

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