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Half wave rectifier

Half wave rectifier

A half-wave rectifier is a fundamental circuit in electronics, designed to convert alternating current (AC) voltage into a unidirectional voltage. It utilizes the simplest form of diode rectification, where the circuit comprises a single diode in series with a load resistor and an AC power source.

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Related Experiment Video

Updated: Apr 19, 2026

A Performance-testing Platform for a Conduction Micropump with an FR-4 Copper-clad Electrode Plate

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Published on: October 9, 2017

A compact low-power valveless piezoelectric micropump with a nested rectification structure.

Jie Shan¹, Aoyu Ma¹, Cuixue Ren¹

¹Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian, China. jingminl@dlut.edu.cn.

|April 17, 2026

Summary

This study introduces a novel piezoelectric micropump for medical devices. Its unique nested structure significantly improves fluid control, offering miniaturization and low-power operation for enhanced medical applications.

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Last Updated: Apr 19, 2026

A Performance-testing Platform for a Conduction Micropump with an FR-4 Copper-clad Electrode Plate

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Published on: October 9, 2017

Microfluidic Chips Controlled with Elastomeric Microvalve Arrays

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Published on: October 1, 2007

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

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Published on: February 20, 2019

Area of Science:

Biomedical Engineering
Fluid Dynamics
Materials Science

Background:

Implantable medical devices require micropumps with low power consumption, small size, and effective backflow prevention.
Existing piezoelectric micropumps face challenges in meeting these stringent demands.

Purpose of the Study:

To develop a novel valveless piezoelectric micropump with a nested rectification structure.
To enhance rectification performance and unidirectional fluid transport for medical applications.

Main Methods:

Numerical simulations were employed to analyze fluid dynamics.
Flow rate experiments were conducted to evaluate performance.
The effects of piezoelectric vibrator, nested structure, and driving parameters were investigated.

Main Results:

The nested rectification structure significantly improved rectification efficiency by 26.8% and 52.3% compared to conventional designs.
The micropump achieved a compact size of 10 mm × 10 mm × 3 mm.
Low-voltage operation (10-30 V) yielded adjustable flow rates from 98.6-315 μL min⁻¹ at 200 Hz.

Conclusions:

The proposed piezoelectric micropump offers a promising solution for low-voltage, miniaturized, and high-flow delivery systems.
This technology is suitable for medical applications and lab-on-a-chip platforms.
The nested rectification structure is key to achieving superior performance.