I require 12V isolated (5000V) but with a low profile transformer and small capacitors. The 12V will supply 4 relays taking 160mA when all powered. The intent is to use a LDO regulator to supply 3.3V. So 12V 200mA would do the trick. Given the 12V is only driving relays: how small can we get this power supply?
PI Expert 9 suggests a LinkSwitch-CV (LNK623PG).
Can you give some advice?
Also some Transformer suppliers UK/Europe/China.