A Low-Ripple High-Voltage Power Supply for Photomultiplier Tubes

Articles in Press

Document Type : Original Article

Authors

1 Faculty of Engineering, Ardakan University, Ardakan, Iran

2 Electrical Engineering Department, Faculty of Engineering, Yazd University, Yazd, Iran.

3 Department of Electrical Engineering, Faculty of Engineering, Ardakan University, Ardakan, Iran

Abstract

Photomultiplier tubes (PMTs) require a stable, low-ripple high-voltage power supply with stringent load regulation and line regulation criteria. This paper introduces an innovative high-voltage power supply capable of converting a 220V AC input voltage into a DC output voltage that can be adjusted from -100V to -3kV. In the event of an arc or short circuit, the output voltage abruptly reduces to limit the output current to its rated value of 5mA. This system employs both linear and switching converters to yield a consistently smooth output voltage with voltage ripple as low as 400mV. The switching converter utilizes a push-pull converter while the linear converter meticulously regulates the output voltage. The paper outlines design considerations for the appropriate selection of components. Simulation results validate the performance of this proposed power supply under a variety of conditions, including input voltage and reference voltage variations, abrupt load changes, and short-circuit scenarios. Furthermore, experimental results from a fabricated prototype confirm the functionality of this high-voltage power supply for PMT applications.

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Tabriz Journal of Electrical Engineering

Articles in Press, Corrected Proof
Available Online from 30 June 2025

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