Questions tagged [electrical]

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14
votes
3answers
2k views

Standard Volt and Ampere

A recent question on here asking about how to calculate the accuracy of a circuit got me thinking about calibration in general. In particular, as EEs we routinely use volts and amperes as a unit and ...
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3answers
86 views

Replacing Multimeters with Megaohmmeters

Standard Digital multimeters can measure up to the ranges of 20 Megaohms. Then why should we use Meggers at all?
0
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1answer
1k views

effective diameter vs overall diameter of multi-strand wire?

Is effective diameter the outer overall diameter of a 7-strand earth wire, (about 2.1 mm), or the copper-only diameter based on 7 x 1 mm strands. (2.645751 mm) ? (Refer to answer on multi-strand wire ...
-1
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1answer
214 views

What are the usual types of loss sources in an Inverter? [closed]

What are the usual loss sources in an common Inverter? Thanks, Devin.
0
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2answers
577 views

What exactly is a SIM card?

Does a SIM card consist of only Flash memory or is there a microprocessor inside as well?
1
vote
3answers
1k views

Why isn't line to line voltage zero?

If voltage is measured relative to something. For instance, voltage-meters measure voltage differences not individual voltage levels, or by analogy altitude is measured relative to somewhere. Mount ...
19
votes
7answers
5k views

Staying in Phase On The Grid

I have been an EE for over forty years and never did find out the right answer to this one.... How do power-stations and transformer switching stations ensure that the power they are feeding into the ...
3
votes
2answers
3k views

Are there gate-level ways to produce the min or max of two binary values?

Some basics of digital logic are the half-adder and full-adder. We know how to produce the sum of two binary values at the level of AND/OR/NOT gates, in a straightforward way presented in many ...

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