I think that the trick is that they have used a memory retention cap instead of a standard one.
**broken link removed**
This one has a value of 1 farad and a leakage current of 315uA.
About the schottky diodes, that's a good idea. I see that they go up to 3A, so I may use these in another project...!
**broken link removed**
This one has a value of 1 farad and a leakage current of 315uA.
About the schottky diodes, that's a good idea. I see that they go up to 3A, so I may use these in another project...!