Power supply for micro-sterilization system using pulsed electric field and dielectrophoresis

被引：0

作者：

Wada K. ^{[1
]}

Kudo M. ^{[1
]}

Uchida S. ^{[1
]}

机构：

[1] Tokyo Metropolitan University, Hachioji 192-0397, 1-1, Minami-Osawa

来源：

IEEJ Transactions on Industry Applications | 2011年 / 131卷 / 12期

基金：

日本学术振兴会;

关键词：

Dielectrophoresis; Power supply; Pulse voltage; Pulsed electric field; Sterilization;

D O I：

10.1541/ieejias.131.1451

中图分类号：

学科分类号：

摘要：

This paper presents a power supply for the micro-sterilization system; the power supply involves the use of a microdevice. The power supply circuit produces both pulse voltage and sinusoidal voltage. The pulse voltage is used for pulsed electric field (PEF) sterilization, and the sinusoidal voltage is needed for dielectrophoresis (DEP). MOSFETs are used in the PEF circuit, and operational amplifiers are used in the DEP circuit. A structure for the microdevice which can generate electric fields of 10∼20 kV/cm is proposed. In addition, a low-inductance structure is designed for the microdevice since the inductance has a some effect on the rise time of the pulse voltage. Moreover, a high-speed gate drive circuit is also used in the PEF circuit along with a digital isolator. As a result, a pulse voltage with a pulse width of 70 ns and a rise time of 9 ns can be generated by the miocrodevice (10 mm × 10 mm × 200 μm). Moreover the output sinusoidal voltage of the power supply can be set to 5 V. © 2011 The Institute of Electrical Engineers of Japan.

引用

页码：1451 / 1456

页数：5

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