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yllongboy
Joined: 09 Dec 2006
Posts: 11
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 12 Dec 2006 17:12 Light dimmer.... |
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Hi there... could somebody help me solve my problem...
I'm onto PIC programming and i wanna create a simple light dimmer using pic16f84... how is this done without using capacitor... just merely by the program... can this be done by PWM?..
Can i Have simple sample code of this?
Thank you....
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manish12
Joined: 21 Nov 2006
Posts: 1020
Helped: 31
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13 Dec 2006 9:20 Re: Light dimmer.... |
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you want ac dimmer ?
or led dimmer ?
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yllongboy
Joined: 09 Dec 2006
Posts: 11
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13 Dec 2006 11:55 Re: Light dimmer.... |
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Hi there... thanks for the reply....
What do you mean by AC dimmer?
i dont understand it.... my problem is,
i want to light a LED with an increasing luminosity then slowly dimming.... using pic16f877.
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budhy
Joined: 21 Oct 2006
Posts: 836
Helped: 185
Location: Indonesia
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Google
AdSense
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13 Dec 2006 12:40 Ads |
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yllongboy
Joined: 09 Dec 2006
Posts: 11
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13 Dec 2006 15:13 Re: Light dimmer.... |
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thank you very much.... i appreciate it.....
i'll try to have a nap to it....
thanks......
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kender
Joined: 19 Jun 2005
Posts: 1231
Helped: 88
Location: Stanford, SF Bay Peninsula, California, Earth, Solar System, Milky Way
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14 Dec 2006 1:46 Re: Light dimmer.... |
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| yllongboy wrote: |
| What do you mean by AC dimmer? |
You can dim a filament light bulb that's powered from the wall 110V (or 220V) 60Hz AC. The effect is similar to dimming the LED, but circuitry (as far as I understand, please correct me if I'm wrong) is more complex. By the way, I was told that fluorescent/incandescent lights powered from 60Hz AC can't be dimmed.
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metal
Joined: 21 Dec 2004
Posts: 369
Helped: 13
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14 Dec 2006 5:48 Re: Light dimmer.... |
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Hi,
You might want to look at this dimmer
good luck
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budhy
Joined: 21 Oct 2006
Posts: 836
Helped: 185
Location: Indonesia
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14 Dec 2006 5:50 Re: Light dimmer.... |
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| Quote: |
| You can dim a filament light bulb that's powered from the wall 110V (or 220V) 60Hz AC. The effect is similar to dimming the LED, but circuitry (as far as I understand, please correct me if I'm wrong) is more complex. |
"AC dimmer" = AC phase Control, take a look at Light dimmer circuits
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| By the way, I was told that fluorescent/incandescent lights powered from 60Hz AC can't be dimmed. |
Not true. googling with dimmer flourescent, there are thousands of topics...
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manish12
Joined: 21 Nov 2006
Posts: 1020
Helped: 31
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14 Dec 2006 8:04 Re: Light dimmer.... |
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you will find ac dimmer in any power electonics book.
there is also direct dimmer chip is available for digital control.
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