SU436304A1 - DEVICE FOR MEASUREMENT OF THE FIELD OF OPERATION OF ELECTRONIC CIRCUITS - Google Patents

Description

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The invention relates to the field of pulsed technology and can be used, for example, to control the functional and predictive parameters of electronic circuits.

A device is known for measuring the range of -the efficiency of electronic circuits, which contains two sections of a series-connected saw-tooth generator, (Perturbation converter and amplifier, as well as a backlight pulse shaper.

However, the known device determines the reliability of electronic circuits sainac only in the area of operation, i.e. the area in which the circuit performs its basic functions (the amplifier amplifies the pulses, the generator generates signals, the trigger with the counting input divides the frequency of the input signal) and does not analyze the quantitative characteristics of the output signals (amplitude of the pulse duration, as well as its front and fall).

In order to conduct dynamic testing of the circuits indicating the compliance of the output parameters with the standards in the proposed device, the outputs of the sawtooth voltage generators are simultaneously connected to the inputs of disturbance converters and to the inputs of amplifiers of the cathode ray tube, and the outputs of the converters are connected to the inputs of the input signals and the inputs the circuit under study, the output of which is connected through analyzers of functional parameters, for example, pulse duration, front duration, amplitude s location pas parallels are, connected to the logic unit, through the communication zannomu illumination pulse shaper modulator with a cathode ray tube.

FIG. 1 shows a block diagram of the proposed device; in fig. 2 - trigger voltages explaining the principle of action. The device includes a voltage generator 1, a saw voltage, the output signal of which is supplied to a disturbance converter 2 and a voltage amplifier 3, the amplified voltage from which is applied to the horizontal deflection plates of a cathode ray tube 4. The disturbance converter 2 changes the generator 5 parameters input signals and operating conditions of the circuit under study 6. The output signal of this circuit is checked by a pulse width analyzer 7, a front length analyzer 8 and an amplitude analyzer 9. If the pulse parameters correspond to the specified norms at the output of one of the analyzers 7, 8 or 9

pulse. Only 1 in the presence of pulse-in at the outputs of all analyzers, the logic block 10 triggers the driver of 11 lodsolt pulses, the output of the latter is connected to the cathode-ray tube modulator 4. The output signal of the generator 12 is connected to the disturbance generator 13 and to the amplifier 14 voltage, the reinforced voltage of which is supplied to the vertical-deflection plates of the cathode-ray tube 4. Perturbation converter 13 continuously changes the parameters of the generator 5 input Signals and the operating condition s study circuit 6. Before connecting circuit 6 to the study unit on the screen of a cathode ray tube blank, since its modulator filed negative voltage with respect to the code (Fig. 2, u). When connecting the studied circuit 6, it is affected by two or more perturbations (for example, to and EQ of Fig. 2, a, b), which change according to a continuous law, the effect of which at the output of the circuit appears signals (Fig. 2, c) arriving at the input of the analyzer 7 pulse duration, analyzing the mountain of 8 the duration of the front and the analyzer 9 amplitude (Fig. 2, g, d, e). The logic block 10, and, consequently, the shaper 11 of the illumination pulses (Fig. 2, g, h), give out pulses only if the output signal corresponds to the specified norms (output tr J cf ft) n ---- I.tr) These pulses allow to obtain on the screen of a cathode-ray tube the region of operation capability evaluating the compliance of the output parameters with the specified norms. The subject of the invention is to measure the operability area of electronic circuits, which contains two .pieces — from a sequence of a GEDN-connected sawtooth generator, (perturbation converter and amplifier, connected to the deflection plates of the cathode ray tube, g also a light pulse shaper, and the disturbance converters are separately connected to different control inputs of the input signal generator and the circuit under study, characterized in that, in order to carry out dynamic and circuits with indication of compliance of the output parameters to the norms, the output of the circuit under study through analyzers of func tionals | Ts.-ionnalnyh t-p-meters, for example, pulse duration, front duration, amplitude, connected in 1 parallel, is connected to the logic block connected through the light pulse shaper with modulator cathode ray tube.

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