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It would be relatively trivial to design a circuit that uses current
sensing to detect pump failure. Current to the pump that falls either
above or below the design window can be used to trigger an alarm or
activate the backup. Response would be nearly instant.
Relatively trivial to you, perhaps. Current sensing sounds like a great way
to spot a fuel or water pump failure, or even potential for failure. I
managed to build an RST intercom that sorta works. Could I build one of
these gizmos? What would be involved?
John Slade (electronically challenged, but keen to learn)
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