How to find the cross over of the power line using PIC?

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Jundiaí

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avr detection of cross zero

Please i must know how can i do to find the cross over of the power line using pic, what hardware i should use? And how can i make the software?

Thanks a lot and sorry about the english


Jundiaí
 

Here's what you need:

Microchip application note:
PICREF-4: PICDIM Lamp Dimmer for the PIC12C508
**broken link removed**
Includes C source code and schematic with zero cross detection.

Atmel AVR application note:
AVR182: Zero Cross Detector (7 pages, updated 3/02)
This Application Note describes how to implement an efficient zero cross detector for mains power lines using an AVR microcontroller.
http://www.atmel.com/dyn/resources/prod_documents/DOC2508.PDF

PIC16F84 based TRIAC / IGBT phase controller for 50/60Hz brightness control
http://microchipc.com/sourcecode/#triac
Includes C source code and schematic with zero cross detection.

You can also search google for "zero-cross detection" and you will find a lot of links.
 

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