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Couplers - optic, inductive, capacitive circuits

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nForce:
I have another question:

Can someone explain how does this circuit work: https://www.analog.com/en/products/ad202.html#product-overview?

I haven't analyzed circuits much, so I need some help.  :)

T3sl4co1l:
Externally, or internally?

Externally, it's magic.  You wire up power, and it transmits power and an analog signal.

Internally, it looks like two transformers coupled with a synchronous de/modulator (also known as a chopper amp).

Tim

David Hess:
Check out figure 12 on page 8 of Linear Technology application note 9 for a discrete implementation and description.

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