What is the difference between floating and fixed voltage?

Answer Posted / carl_ellis

For fixed voltage, (assuming you mean ground-referenced), one DC line or one AC phase (or neutral) is connected to ground (AKA earth).

The output of a floating power supply is isolated from ground/earth.

A floating voltage is generally produced from the output of a transformer, a power supply or a battery, unless the circuit powered is tied to a ground reference.

A voltmeter will not detect a floating voltage when measuring between the floating point and ground.

Carl Ellis
Measure First

Is This Answer Correct ?    4 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How does your previous experience relate to the job you are applying for ?

1552


Why plc require in analog input 4-20amp & 0-10 volt?

619


, Instrument Index, P&ID review, I/O schedule, datasheet, DCS / Analyzers specifications, loop diagrams, hook-up drawings.

7548


Draw a group of instruments interlocked to a Pump & Motor?

635


why we use cascade control and feed foreword control in 3 element control of boiler drum ?what is feed forward and cascade control system ?

1749






basic connection and principle of axial shift sensor n differential sensors in tubine describes n draw......

1889


Actual using of tube bender to bend 2 opposite 90 deg at correct measurement center to center of tubing.

1491


why we use the ac supply load cell>?can we use the dc supply load cell?advantages and disadvantage of the ac supply load cell?

5876


Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?

1487


why we are using digital signals for I/O & how to measure this signals is getting or not ?

1530


What is stripper & spilitter ? Diffrence in this.?

2526


what is the difference between -24 : +24 & 0:24 and where it use?

1624


applications of plc in printing and packaging?

1668


Can anyone send most commonly asked interview question in Oil & Gas industry

1751


sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com

1933