SU466485A1 - Signal Comparison Device - Google Patents

Description

In time, threshold element 2 and trigger 3 clock pulses do not pass to the outputs of the matching circuit 5 and 6.

If the value of the difference Xi-Xz exceeds the value of the signal specified by the current-providing element 7, then after passing the next clock pulse, the output signals of the threshold element 2 and trigger 3 appear in the same phase, which is now determined only by the sign of the difference of the input signals, and at one of the outputs a match of 5 or 6 appears in a series of clock pulses. These pulses are present at this output until the difference Xi-Xz becomes less than the value of Af / nop given by the tokadaj, it is element 7.

Thus, changing the value of the resistor 7, you can adjust the width of the dead zone of the device. In this case, the comparison threshold defined by the threshold element 2,

remains constant. When adjusting the threshold of the threshold element 2, the width of the dead zone remains constant.

Subject invention

A device for comparing the signals containing, its difference difference comparing unit, connected to a threshold element, and a clock generator, is distinguished from the fact that, in order to improve the accuracy of obtaining the adjustable width of the dead zone, a current element and The / - trigger, the separate inputs of which are connected to the outputs of the threshold element, the counting input to the clock pulse generator, and the single output of the trigger is connected to summing, with the input of the difference selection unit through the current supply element.