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Measuring a voltage with respect to ground and chassis

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marco antonio

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Ground or chassis

Just a silly question but I would like to know what is the difference when I have to measure a voltage with respect to ground or the chassis. Are the measurements differents and Must i have to take care of when measurement is made.
tks
marco antonio
 

Re: Ground or chassis

The ground is usually where the negative side of the power supply connects to the circuitry. It is also where the input signal return is connected. In some systems, this circuit ground is also connected to the metal cabinet or box.
 

Re: Ground or chassis

Usually ground and chassis are refered to the same thing. But there are cases where the ground is the signal's ground (zero volts reference) and chassis is the equipments metal frame which might have nothing in common with the signal, low voltage ground. Although the chassis (metal frame) must be earthed in mains powered equipment, this does not means it is also connected to signal ground.
For voltage measurements always notice the zero volts reference-signal ground, in order to take correce measurements.
 

Re: Ground or chassis

Hey buddies
Tks for yr response They cleared my definition.
rgds
marco antonio
 

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