On 22 July 2014 15:16, Alan wrote: > Quite some time ago I inquired if anyone knew anything about the little I= C > that controls solar yard lights (yx8019 in the one at hand). No one > answered so I assumed no one knew. Well I have now found a spec sheet, it > is in Chinese but informative non the less. > For yx8019 > > http://www.datasheet-pdf.com/datasheetdownload.php?id=3D789092 > And also, from Zetex - in English. > > http://www.diodes.com/datasheets/ZXLD383.pdf > These are nifty little things, they isolate the solar cell from the > battery and turn on the light when dark. And all with a single NiCad. And > with only one other part, a simple inductor. > I appear to have missed the original request. I have experience of a few different and useful Asian SMPS products and it may be useful and/or interesting to talk about the pros and cons of a few and whether they are worth knowing about or obtaining. I should be otherwise engaged just now, but if you prompt me 'in a few days time' I should be able to provide some information. I'm just starting to use an Asian sourced LiFePO4 charger IC that looks useful and both better and cheaper for my purposes than anything 'mainstream western' that I'm aware of. Not a smps IC. More on that anon perhaps. Russell --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .