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Old 14th January 2010, 04:03 AM   #1
star882 is offline star882  United States
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Default halogen supply

I'm reverse engineering the power supply out of a 50w halogen lamp in order to modify the power supply for other uses. The design is practically identical to the ones I have found online except it has a 0.22uF ceramic capacitor parallel to the output. What is that for? Is it part of a resonant circuit?
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Old 14th January 2010, 01:13 PM   #2
Jaac is offline Jaac  Netherlands
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Maybe this document will help you

http://www.st.com/stonline/products/...re/an/3707.pdf

gr
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Old 14th January 2010, 01:46 PM   #3
star882 is offline star882  United States
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I already looked at that. The one I have is almost identical except it has that capacitor parallel to the output.
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Old 14th January 2010, 02:21 PM   #4
Jaac is offline Jaac  Netherlands
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Maybe a kind of load when no lamp is connected ?
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Old 14th January 2010, 02:56 PM   #5
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Quote:
Originally Posted by star882 View Post
I already looked at that. The one I have is almost identical except it has that capacitor parallel to the output.
Probably to remove power supply noise.
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