FREQUENCY COMPARATOR FOR INVESTIGATING STRENGTH PROPERTIES OF STRUCTURES

摘要

The invention relates to measuring equipment and can be used as an input device for calculators fatigue strength iso- Bretenoux aim - increase accuracy by optimizing the frequency characteristic. The signal from the physical quantity sensor 11 is converted into rectangular pulses of the control units 2 and 5 of dosing. Prohibiting potentials with threshold elements 7 and 8, developed on the basis of outputs of the 2 and 5 dosing through the AND circuit 9 is controlled by the electronic key 10. 1-yl, W E