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Active and Passive Electronic Components
Volume 2014 (2014), Article ID 319213, 5 pages
Research Article

Multiple High Voltage Pulse Stressing of Polymer Thick Film Resistors

Instrument Technology Department, Andhra University College of Engineering (A), Visakhapatnam 530 003, India

Received 26 September 2014; Accepted 2 November 2014; Published 19 November 2014

Academic Editor: Mingxiang Wang

Copyright © 2014 Busi Rambabu and Y. Srinivasa Rao. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The purpose of this paper is to study high voltage interactions in polymer thick film resistors, namely, polyvinyl chloride- (PVC-) graphite thick film resistors, and their applications in universal trimming of these resistors. High voltages in the form of impulses for various pulse durations and with different amplitudes have been applied to polymer thick film resistors and we observed the variation of resistance of these resistors with high voltages. It has been found that the resistance of polymer thick film resistors decreases in the case of higher resistivity materials and the resistance of polymer thick film resistor increases in the case of lower resistivity materials when high voltage impulses are applied to them. It has been also found that multiple high voltage pulse (MHVP) stressing can be used to trim the polymer thick film resistors either upwards or downwards.