SU447827A1 - Apparatus for determining the nature of the transient process in current-time transducers - Google Patents

Description

The invention relates to the field of radio engineering measurements and can be used in the study of the dynamic properties of equipment with time pulse modulation.

The known devices for determining the nature of transients, containing a current source, a key, a key control circuit, a measuring device, do not allow the study of the effect of transient on current transducers in the time interval of the location of the moment of input current transducer relative to the converter conversion cycle.

The aim of the invention is to determine the transient of current transducers in a time interval.

For this purpose, the input of the current converter in the time interval is connected through a series-connected current source, the current switch is connected to the output of the current converter in the time interval.

The drawing shows a diagram of the proposed device.

0 It has a current converter in time interval 1, input signal block 2, key 3, key control circuit 4, measuring device 5, stabilized current sources NIKI 6 and 7, trigger 8, switches 9, 10 and I, delay circuit 12, eg voltage source 13i pulse impulse transformers 14 and 15 pulse shaper 16,

Both of the stabilized current sources 6 and 7 have a common point connected to the key element 17, which is part of the tail switch 3. Moreover, the common point of both

5 stabilized current sources

connected to the input terminal of the unestable transducer under test.

The stabilized current source 7 has a common point with the converter under test. In this case, the grounded terminal of the test transducer is connected to the contact of the key element 18, which is also included in the current switch 3.

Both shoulders of the trigger 8 are connected through resistance of the divider; control circuits for key elements 17 and 18. Split inputs; trigger 8 is linked to buttons

and Kpi, the second contacts of which are combined and connected to the voltage source 13. In addition, the separate inputs of the trigger 8 through the switch 9 are connected to the output contact of the adjustable element; delay 12. The input contacts of the re: delayed delay element 12 are connected to the output winding; pulse; transformer 14, i Before starting operation, switch 9 is set to the open position, and switch 10 is in the opposite state, for example, switch 9 to the left position, and switch 10 to the right, using the K2 button trigger eight

is set to position 1, with the key element 18 being in the conducting state, and the element

17- in non-conductive. In this case, the total current from two sources of stabilized current b and 7 arrives at the input of the test converter. The required time delay value is set at 1-adjustable delay element 12 by connecting one or another capacitor.

When the switch 10 is closed, the first output of the tested converter and delayed for a predetermined time using an adjustable delay element 12 pulses the trigger 8 to the state O, the Key element 17 becomes conductive, and the element

18- nonconductive. With an instance on the input of the transducer under test, there is an abrupt change in the current to a value equal to the current from the source of a hundred, a transient current 7. A current jump at the input of the transducer under test occurs due to the fact that

stabilized current 6 is shunted by a key element 17, and the case of a stabilized current source b is disconnected from the common ground of the circuit using element 18; The pulse former 16 generates a pulse of the required amplitude and duration from the incoming signal and supplies it to the measuring input

device 5. This pulse, recorded on a separate track (loop), is a label indicating the instantaneous jump in the current at the input of the transducer under test.

The time intervals formed by the pulse sequence at the output of the tested converter before, at the time and after the current jump at the converter input measures the measuring device, which is used as measuring device 5. It also converts the obtained measurement results

binary or binary decimal code.

If it is necessary to carry out a current jump at the input of the subject

the converter from a lower value to a larger one, switches 9 and 10 place the first one in the right position and the second in the left position respectively. The initial preparation of the trigger 8 is carried out by pressing the K button. In this case, trigger 8 is set to position 0. Further actions are similar to those described above.

PICTURE SUBJECT Device for determining the nature of the transient process in current transducers in a time interval containing a current source, a key, a key control circuit, a measuring device, and the fact that, in order to determine the nature of the transient, the current transducer input in time is connected via a series-connected current source, a current switch and a key control circuit with the output of the current converter in the time interval, and the measuring device is also connected to the output of the converter current and in the time interval.