Comments on: PIC18F2550 based harmonic distortion meter

By: rajiv

rajiv — Mon, 24 Aug 2009 13:40:40 +0000

I AM DOING PROJECT ON HARMONIC DISTORTION METER.I AM A LAST YEAR ELECTRONIC STUDENT IN PUNE UNIVERSITY IN INDIA.PLEASE SEND ME THE BLOCK DIAGRAM OF HARMONIC DISTORTION METER USING PIC18F2550

By: vimal

vimal — Sat, 20 Jun 2009 09:38:54 +0000

i need a simple layout of hormonic meter and its application

By: Circuits-Lab.com » Blog Archive » PIC18F2550 based harmonic distortion meter

Fri, 04 Jan 2008 22:00:47 +0000

[...] This simple device, designed by Wichit Sirichote, measures the quality of AC voltage. The device measures 3rd harmonic which is used to find the distortion value comparing to fundamental frequency. Device calculates DFT of signal which is captured via step down isolation transformer and 10-bit ADC. Testing showed that clean sine wave gives less than 0.5% of distortion, while square wave gives about 33%. Project description includes detailed measurement theory outline and practical examples as well. Project is built on test board which was developed for general purposes. Source code is available for download. [via] [...]

By: Electronics-Lab.com Blog » Blog Archive » Interfacing RFM12 transceiver module

Thu, 03 Jan 2008 16:04:27 +0000

[...] RFM12 is a transmitter and receiver module in single board. It can be powered by using 2.2V to 5.4. It makes ideal module for embedded systems. Module communicates via SPI interface. Wigbert Picht and Dirk Milewski have made simple Atmega8 tesboard, where RFM12 module is soldered as SMD element and can be configured with jumpers. There can be any sensors connected to this board like temperature. [via] [...]

By: Electronics-Lab.com Blog » Blog Archive » PIC18F2550 based harmonic distortion meter

Thu, 03 Jan 2008 16:04:09 +0000