Check out this circuit

I am having trouble doing fault finding on this circuit.
Thanks to fotophil for alerting me to this rather interesting problem.

A rather interesting circuit

My knowledge of circuit theory is failing me. I don’t recognise some of those circuit symbols. And do Kirchhoff’s Laws, and Norton’s and Thévenin’s Theorems work on this circuit?
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About Alan Liefting

Alan Liefting is the founder, a shareholder, and the Managing Director of Ecotech Services. The views expressed here are his own and do not necessarily represent those of Ecotech Services Ltd.

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