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Sunrise Lamp circuit

Hi,

I'm a total beginner in electronic and I'd need an advice on modifying a circuit that I found on the web.

The circuit can be found at

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and is designed to slowly lighten a 60watts regular light to full brightness over a 20 minutes period (use that instead of an alarm clock and apparently you wake up fresh...).

The problem is that I would like to use a 15 watts (or maybe 7 watts) bulb since 60 watts is to bright. I think it will have an impact on the circuit (will it?) but don't know how to calculate (I probably need to change some resistors, but which).

Thank you

Reply to
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Since the circuit works on the principle of pulsing the=20 voltage on and off, to vary the average voltage, the power=20 rating of the lamp has almost nothing to do with its=20 operation. I think it will work just fine, as it is, with a=20

7 watt lamp.
Reply to
John Popelish

modifying

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The components you need to play around with are the 270K resistor and the 3300uF capacitor on pin 9 of the 324. Start by reducing the cap to say 1000uF and the resistor to 100K and see how it goes.

Reply to
Ross Herbert

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