SU491901A1 - Stroboscopic envelope transducer of amplitude-modulated oscillations - Google Patents

Description

one

The invention relates to the field of electrical measuring technology and can be used to build oscilloscopes of amplitude modulated signals.

The stroboscopic transducers of the bend, its amplitude-modulated oscillations, are known, which contain a delay circuit, a stroboscopic mixer, a stroboscopic mixer control device, and an extremes voltage extinction device, the input of which is connected to the output of the stroboscopic mixer.

A disadvantage of the known stroboscopic transducers is their low speed.

The purpose of the invention is to increase the speed of the converter.

This is achieved by the fact that in the proposed converter, the device for isolating extreme voltage values is made in the form of memory blocks, two reset circuits, a comparison block, an adder, two delay circuits and a commutator, the switch input is connected to the output of the stroboscopic mixer, the outputs are connected to the inputs of the memory blocks, the outputs of which are connected to the inputs of the comparison unit and the adder, and the outputs of the comparison unit are connected to the control input of the switch and to the first inputs of the reset circuits whose outputs are connected according to There are current memory blocks, the counter input entered into the converter circuit is connected to the strobe mixer control device, and the output through one delay circuit to the second inputs of the reset circuits and through the second delay circuit to the control input of the adder.

The drawing shows a block diagram of the proposed Converter.

The converter contains a delay circuit 1, a stroboscopic mixer 2, a stroboscopic mixer control unit consisting of a starting circuit 3, a sawtooth voltage generator 4, a comparison circuit 5 and a strobe pulse generator 6, a counter 7, a stage generator geyirator 8, and a first adder 9 , a voltage generator of arbitrary shape 10, a device for allocating an extreme voltage value, consisting of a switch 11, two memory devices 12 and 13, a reset circuit 14 and 15, a comparison device 16 and a second adder 17, a derating circuit 18 and 19 and meter control circuit 20.

The device works in the following way.

The signal under study through the delay circuit 1 and the stroboscopic mixer 2 is fed to the switch 11. At the initial time, the switch 11 connects the output of the stroboscopic mixer 2 to the device

memory 12, which stores the instantaneous value of the signal at the first gating. The signal proportional to the instantaneous value of the signal under study at the first gating comes from the output of the memory device 12 by the pa comparison device 16, which translates the switch 11 to another position where the memory device 13 is connected to the output of mixer 2. A signal proportional to the instantaneous value of the signal under investigation In the second gating, it comes from the output of the memory device 13 to the comparison device 16, where it is compared with the signal received from the previous gating. Depending on the ratio of the signal levels obtained during the first and second gating, the comparison device 16 generates an erase signal received through the reset circuits 14 or 15 on the memory device 12 or 13, while simultaneously converting the spider 11 to the position where at the next gating the instant value the signal under investigation is stored in the memory device where the information is erased. This continues until the end of the read cycle appears at the output of the counter 7, turning the stroboscopic mixer control device to the read position of the next point of the signal under investigation. The output from the counter 7 includes a summattor 17, which receives signals from memory devices 12 and 13. The switching on the adder 17 occurs through a delay circuit 18 in order for the erase signal coming from the comparison device 16 to memory devices 12 and 13 I managed to erase unnecessary information on one of them. Thus, the output of the adder 17 receives a signal proportional to the extreme value from the set of instantaneous values corresponding to a given reading point. The output of the adder 17 is the output of the converter. The signal from the output of the counter 7 through the delay circuit 19 is supplied to the reset circuits 14 and 15, which erase

5 information recorded in devices TI 12 and 13, preparing them to receive information about the next read point. The delay time of circuit 19 is longer than the delay time of circuit 18. This ensures that information from memory devices 12 and 13 is read before the erase signal arrives.

Claims (1)

Invention Formula 5 A stroboscopic envelope transducer of amplitude-modulated oscillations, containing a delay circuit, a stroboscopic mixer, a stroboscopic mixer control device, and an extreme voltage value extractor device, whose input is connected to the stroboscopic mixer output, characterized in that, in order to increase speed, an extruder isolator the voltage values are executed in the form of memory blocks, two reset circuits, a comparison block, an adder, two delay circuits and a switch torus, while the input of the commutator is connected to the output of the stroboscopic mixer, the outputs E are connected to inputs. Units to us, the outputs of which are connected to the inputs of the comparison unit and the adder, and the outputs of the comparison unit are connected to the control input of the switch and to the first inputs of the reset circuits whose outputs are connected to the corresponding memory blocks, and the counter input entered to the converter circuit, connected to the device by a stroboscopic mixer, and the output through one delay circuit to the second inputs of the reset circuits and through the second delay circuit to the control input of the adder.