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Digital Varial Resistance

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fedail

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hello all
i need to control light but i don't need it by ptentiometer
i need to control it by digital controler how can i do this ?
 
Not enought info.
What type of light and what's it's wattage?
What's the power source?
 
should we have to work on wattage or voltage and amper ?

the power source is 220 V i can transforme it to any voltage
i haven't any idea i just want to control it
i know there is many way by using transistor or using relay or anything else
but i want to control it by digital controller and may be i will use high voltage for the light
 
Light dimmer circuits
should provide you with some insight, try using google BEFORE you ask questions. We're not here to replace existing search and reference material that already exists.
 
I can't fine any help still now
please all i want to control light without potentiometer " i mean manual " i want to control it by pc or controller so i mean by ic or any things digital .
 
i swear i google it befor and i didn't find anything
lesson how to use Google...

1. Open your webbrowser
2. Go to Google
3. type the text +light +dimmer +circuits or +light +dimmer +schematics in the search box
4. Click on the SEARCH button on the Google page
5. Have a few milliseconds patience as the links will be loaded
6. Enjoy of the thousands of links... months of reading pleasure :)

you will get sites as...
Light Dimmer Electronic Circuits, Page 1
Light dimmer circuits
Various Schematics and Diagrams

a kid of 8 can even do this :D
 
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