Surge comparison type coil tester

Details Surge comparison type coil tester Surge comparison type coil tester

1974-10-04

1976-01-13

Mullins, James B.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 59, G01R 2726

Patent

active

039328066

ABSTRACT:
Low voltage pulses are applied to a pulse transformer to produce high voltage pulses, which are in turn applied through a capacitor and a diode to the coil under test and to a standard reference coil. The waveforms of the resulting surge currents through the test and reference coils are superimposed on a cathode ray tube, and the test coil is judged defective if the waveforms are substantially different. A resistor is connected in parallel with the capacitor to discharge the capacitor between pulses, and the diode prevents the capacitor from discharging through the coils. The high voltage pulses may be applied alternately to the coils and the waveforms displayed on a single beam cathode ray tube, or simultaneously and the waveforms displayed on a dual beam cathode ray tube.

REFERENCES:
patent: 3869664 (1975-03-01), Safer et al.

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