Schering bridge
The Schering bridge is an
electrical circuit used for measuring the insulating properties of electrical cables and equipment.[1] It is an AC bridge circuit, developed by Harald Schering
. It has the advantage that the balance equation is independent of frequency.
The connections of the Schering bridge under balance conditions are shown in the figure below.
In this diagram:
- C1 = capacitor whose capacitance is to be determined,
- R1 = a series resistancerepresenting the loss in the capacitor C1,
- C2 = a standard capacitor,
- R3 = a variable non-inductiveresistance,
- C4 = a variable capacitor,
- R4 = a non-inductive resistance in parallelwith the variable capacitor C4.
References
- ^ Schering Bridge (Measurement of Capacitance), Myclassbook, 2 August 2013
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