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Electronics => Beginners => Topic started by: jeroen79 on October 04, 2015, 11:21:30 pm

Title: testing electrical continuity
Post by: jeroen79 on October 04, 2015, 11:21:30 pm
How exactly is electrical continuity defined?

Ideally I would say 0 ? but .1 ? can be considered continuous as well.
Even 1 k? and 1 M? conduct current but I wouldn't consider them 'continous'.
And if you increase the voltage enough things like diodes will suddenly conduct.

What definition should I use when designing a continuitytester?
Resistance less than x ?? Test below y V?
Title: Re: testing electrical continuity
Post by: RobertHolcombe on October 05, 2015, 12:09:53 am
Continuity implies that there is a continuous path (circuit) for current to flow - the resistance threshold would depend on the DUT. General purpose continuity testers are aimed at testing relatively low resistance because the general use case is testing interconnects
Title: Re: testing electrical continuity
Post by: AlfBaz on October 05, 2015, 12:18:54 am
I would put it this way
Continuity is the resistive point below which, the circuit does not impede it's intended function.

For example, power earth continuity would be defined as a resistance where the fault current would not create a hazardous potential difference between the fault and ground.

Electrical continuity would be a resistance that at a certain current would not create a significant voltage drop between the source and the load or a resistance that would not dissipate enough power to cause harm to the medium carrying that current

In other words, it depends...