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Resonant frequency measurement of standardized snubber circuits is accomplished with a frequency bridge.
English (United States)
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Method for Measuring Resonant Frequency of Snubber Circuits
Resonant frequency measurement of standardized snubber circuits is
accomplished with a frequency bridge.
A resistor 10 of same identical kind that is used in the standardized snubber
circuits, e.g., circuit S, is connected as a reference resistor in a leg of a standard
Wheatstone Bridge 20. As such, resistor 10 matches the resistor characteristics
of the resistor component Rs of the snubber circuits S to be measured.
In operation, each circuit S is connected to the test terminals 11 of the
opposite leg of the bridge 20. The bridge 20 is then balanced by adjusting the
frequency of adjustable frequency signal generator 12 until a null is obtained in
the meter or oscilloscope 13 connected to the output of the bridge 20. The
setting of the generator 12 is the resonant frequency of the circuit S being
measured when this occurs.