555 lamp dimmer

Thread Starter

capacitivedischarge

Joined Dec 8, 2009
1
Hello all,

I am doing an electrical engineering project and I seem to be stuck on a few points. What I need to know is the limits of the below lamp dimmer project/555 timer and how it may be improved. Any insight would be more then appreciated.
Thanks
 

MikeML

Joined Oct 2, 2009
5,444
A standard 555 can only switch a load that draws <200mA. Any lamp you are likely to grab will draw more like 1A, so you will need to add a transistor/FET switch between pin 3 and the lamp.
 
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