Andy Peters wrote:
Tantalums will work. Just make sure you get surge rated parts.
Otherwise, watch out for explosions at power-up.
3 ohms/volt dropper (5v = 15R dropper) to limit the surge was the standard
I learnt and still use. Suitably adjusted/amended to allow for the load
current.
However I can not find the design notes that the value comes from, I have
got them somewhere. The likely source is a Siemens databook from the 1980's.
--
Regards
Richard
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