SU495638A1 - Device for measuring time intervals - Google Patents

Description

which through the inverter 19 is fed to the controlled key 10, and through the shaper 7 a sequence of pulses enters the abundance of the inputs of the matching circuits 5 and 6.

In the absence of a control signal at the input 14 of the controlled key switch 10, the measured sequence of pulses at the input 11 of the trigger 12 is absent. When the enable signal is reached and the input 13 of the key 10, the signals through the inverter 9 begin to arrive at the single input 11 (Fig. 20) of the symmetric trigger 2. The trigger 12 is tilted, and the output signal appears on its output 20 (Fig. 2d). When a pulse "O" arrives from the generator 7, corresponding to the next pulse at measuring input 8 (Fig. 2a), a starting pulse is generated at the output of the coincidence circuit 5 (Fig. 2 (9), which simultaneously starts the time relay 18 (Fig. 2e ) and arrives to the delay line 17. After the delay time Tzad (Fig. 2) from the output of the delay line 17, the signal of the odioime comes about prohibiting the input 15 of the key 10 and the zero input 16 of the trigger 12.

The key 10 closes, the trigger 12 overturns and a low potential is set at its output 20 (Fig. 2d), which eliminates the possibility of pulses from the driver 7 to the start input 3 of the digital meter 2. The time relay 18 at the output 19 of time relay 18 is set a potential high level signal (FIG. 2i) that provides

/ 1 impulse (after a time of 7k) through the coincidence circuit b to input 4 (Fig. 2l;) digital meter 2. Select different time / nil. . it is possible to measure a different number of periods of continuously following pulses. In the event that a piterval between two successive impulses and impulses is to be measured, the signal for measuring resolution is supplied to the nerve imimage imuls to input 8.

Форм} л а and 3 o b r e e and u

A device for measuring time intervals, containing a reference frequency generator, connected to the digital input of a meter, a matching circuit for starting and stopping a digital meter, a delay line, a trigger, forltirovat and pulse inverters, in order to simplify the device, it equipped with a time switch and a key, with the output of the circuit coinciding with the meter of the connection meter with one of the inputs of the matching circuit for stopping the meter and through the delay line with the zero trigger input and the key inhibiting input, connected between a single trigger input and an output of an inverter whose input is connected to a device input, the trigger output is connected to one of the inputs of the coincidence circuit to start the meter, the other input of which is combined with the second input of the coincidence circuit to stop the meter and through shaper; iH ibcois; The device is connected to the measuring input of the device.

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