Phasemeters

Details Phasemeters Phasemeters

1975-05-27

1977-05-03

Ruehl, Charles A.

Measuring and testing

Brake testing

Single wheel rotating and resistance measuring means

324 83D, G01L 310

Patent

active

040206858

ABSTRACT:
The invention relates to a phasemeter, particularly for torque measurement, using trigger devices to convert phase related input analogue signals to digital signals the mark space ratio of which is a measure of phase displacement between the input signals, and uses a technique of attenuating an input signal, until no change in mark space ratio of the digital output is produced, for ensuring that the triggers trigger at the same level, and also provides for complementation of the trigger outputs as a check on the operation of the triggers.

REFERENCES:
patent: 3640131 (1972-02-01), Turk
patent: 3906361 (1975-09-01), Nessler et al.

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