I have a device with 4 series 1.5V D cells batteries (About 8000maHour).
The batteries last 40 hours, making the average draw around 200mA. The problem however is that the duty is about 2% at 1/3Hz, so it seems to deliver bursts of about 10A, and I don't really want to put in a 10A 60W supply for something that is only about 1.2W average. And unless my math has failed me, the bursts are 1000J so I would need about a 55F capacitor, which is out of the question.
Any one know of any other tricks I could use?