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mho conductance

When is the unit of the mho used in practical applications ??? I know what a mho is but I have never seen any real world references to it being used in electronics.

I recently saw some sort of tester at a flea market that had an indicator light and a rotary switch which had different ranges for different ranges of mhos. The device had an inch diameter inch deep "socket" with two round contacts in the bottom. The owner/seller could offer no explanation....I would have bought it and took it apart but never got back to that particular table .

Reply to
cornytheclown
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I forget what all uses it has, but 2 come to mind.

  1. the transconductance of a transistor.

  1. When a circuit is convieniently drawn/analysed as a collection of components in parallel (like a parallel equivalent circuit or one that really is that way) it's easier to add admittances rather than calculating parallel impedances. Admittance is real conductance in parallel with imaginary (reactive) susceptance. So you add the parallel conductances and invert to get equiv series resistance... stuff like that.

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Best Regards,
Mike
Reply to
Active8

It was the unit of conductance (in my day - which a little while ago!), and I think it is now called a 'Siemens'.

Reply to
Barney

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