>
>> I thought solid state relays were Triac/SCR based and therefore only
>> suitable for AC?  Or am I way off the mark?
>>
"power" solid state relays are usually triac based, but there are also
"signal" style SSR like the LCA110 I mentioned, and they use
light-activated mosfets interally (according to the clare datasheet,
anyway.  Don't know offhand how 'logical' vs 'real' that is.)  The opto
link
isolates the Vgs sorts of issues, and of course you can use
arbitrarilly high voltage mosfets...

BillW

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