A novel on-chip step-dimmer for low cost AC-powered HV-LED driver

A New, Simple, “universal”, Low Cost LED Driver and Controller

In this paper a new LED driver and its controller are conceived realized and experimentally validated. It presents several advantages compared with existing counterparts: First it uses a single converter while most of the existing drivers are based on a two-converter architecture. In the proposed approach the average current through the LED is directly regulated. The proposed driver is built ar...

PackTrack The low - cost self - powered damage - tracking system - on - a - chip . by :

Low-Cost Servomotor Driver for PFM Control

Servomotors have already been around for some decades and they are extremely popular among roboticists due to their simple control technique, reliability and low-cost. They are usually controlled by using Pulse Width Modulation (PWM) and this paper aims to keep the idea of simplicity and low-cost, while introducing a new control technique: Pulse Frequency Modulation (PFM). The objective of this...

A Low Cost LED Based Spectrometer

A low cost LED based spectrometer is described. This LED based spectrometer could be operated as a standalone instrument or under PC control via serial link. A total of seven wavelength selections are available by the plug-and-measure LED light module. With the seven wavelength selections, the LED based spectrometer could provide qualitative visible absorption spectra that predict the absorptio...

A Low-Cost, Smart AC Charging System for Electric Vehicle

In industry development strategy of electric vehicles, apart from concerns on the development of electric vehicles, we also need to consider the issue of charging facilities construction. Firstly, through analysis, this paper discusses the importance of AC charging points for electric vehicle development. By studying existing AC charging points on the market, it presents a low-cost smart AC cha...