And my prototypes (which only uses some parts of the above idea)
Additional resources : http://www.discovercircuits.com/Members/mod-led-nite-lite.htm ,which is based on this posting http://www.electronicsweekly.com/blogs/engineering-design-problems/2007/03/the-notsobright-led-night-ligh-1.html
The links explain how I came to build the first prototype which replaces one of these.
My parts shopping list: Parts not in my box.
TIP47 x1 @ 9.7p each
68uF 400v x1 @ 37 pence
250v and 275v MOV @ 14pence each
500mA fuse 10pence
fuse-holder pinsx2 @ 5pence each
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