Arrangement for measuring the ratio between a number of...

H - Electricity – 04 – M

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354/167

H04M 15/00 (2006.01) G06F 7/62 (2006.01) H04M 3/22 (2006.01) H04M 3/36 (2006.01)

Patent

CA 1114512

ABSTRACT OF THE DISCLOSURE The invention concerns an arrangement for measuring the ratio between a number of events occurring after each other in a first series of events and a number of events in a second series of events, each series activating a pulse generator included in the arrangement. The arrangement further comprises a counter, which is stepped forward by the pulses generated by said pulse generator controlled by said first series of events. A multiplying arrangement receives the counter value of said counter and multiplies this value by a factor m where m indicates a selected part of the received counter content. The multiplying arrangement receives on a control input, a pulse from said pulse generator controlled by said second series of events. When the arrangement receives said pulse it feeds a signal to a subtracting input of the counter, which signal reduces the counter content by a number of steps corresponding to the multiplication result, so that the counter content varies between two limit values. An indicating unit is arranged for indicating the difference between said two limits thus showing the quotient between the numberof events of said two series of events.

320262

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