| 摘要 |
<p>TITLE A FREQUENCY COMPENSATOR FOR A CURRENT-COMPARATOR CAPACITANCE BRIDGE INVENTOR Eddy So A method and apparatus for rendering a high-voltage currentcomparator capacitance bridge insensitive to frequency fluctuations when used for measuring inductance. A compensating current, proportional to twice the change in the current through the reference capacitor due to frequency fluctuations a is driven into the first comparator winding, through which the current from the reference capacitor passes, resulting in a current in that winding having frequency characteristics similar to those of the current passing through the second winding, which is connected to the inductance. This compensating current is derived from a reduced replica of the applied high-voltage or from the current through the reference capacitor.</p> |
