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The Boonton 72C is a 100 kHz analog meter and is recommended for series capacitance measurements on very low capacitance junctions where normal series loss can cause the Q of the junction capacitance to fall well below 10 at 1 MHz. In this instance, using 72C takes advantage of the fact that the Q of the capacitor with series loss is inversely proportional to frequency and therefore ten times higher at 100 kHz then at to 1 MHz.
Model No
72C
Condition
Used
Manufacturer
Boonton
Type
Hand Held