SU585446A1 - Oscilloscopic device for studying amplitude-frequency characteristics - Google Patents

Description

one

The invention relates to electrical measuring technology and can be used in the study of two-port networks.

An oscillographic device containing a vertical deflection channel, a Byjoi electron beam tube, a horizontal deflection channel and stabilized power sources is known. This device has a complex construction and consumes more power.

The closest to the invention in its technical essence is an oscillographic device for observing amplitude-frequency characteristics, which contains a vertical channel, the output of which is connected to vertically deflecting plates of a cathode ray tube, the horizontal deflecting plates of which are connected through a frequency discriminator the input of the AGC detector and the output of the AC amplifier, the first input of which is connected to the output of the AGC detector, and the second input is connected to the output of the frequency converter of the signal to an intermediate frequency, high voltage unstabilized

tube power and unstabilized power supply 2.

The aim of the invention is to increase the stability of the position of the beam on the screen.

This is achieved due to the fact that the oscillographic device for observing amplitude-frequency

characteristics, comprising a vertical deflection channel, the output of which is connected to the vertical deflection plates of the electron-beam; tubes, horizontally deflecting plates of which are connected via a frequency discriminator to the detector input | AGC and the output of the variable amplifier, the first input of which is connected to you; the AGC detector code, and the second input With the output of the frequency converter

the input signal to the intermediate hour (gota, unstabilized high-voltage {th tube power source and unstable power supply,

equipped with - T-shaped RCR-chain,

between the output of the unstabilized power source and the control input of the delay of the AGC detector, and the time constant

The T CT chain is equal to the time constant of the unstabilized high-voltage power supply filter.

The drawing shows a structural electrical cable | device circuit. .g: SfcspoucTBo consists of a vertical deflection channel 1, a cathode ray tube 2, an input signal frequency converter 3 to an intermediate frequency signal, an alternating current signal force 4, a frequency discriminator 5, an AGC detector b, a non-stabilized high-voltage tube supply source 7, an unstabilized source , 8 food and T-aligned ECR chains 9.

The device works as follows.

The deviation of the beam of electrically-produced pipes 2 vertically from a voltage proportional to the level of the amplitude-frequency characteristic of the quadrupole under study, which enters the input of channel 1. The horizontal deflection of the beam is proportional to the change in the frequency of the input signal of the four-terminal signal input to the input. input signal to the intermediate frequency signal.

The output signal of the converter is amplified by the AC amplifier 4, the output voltage of which is stabilized with the aid of the AGC detector b with a delay. The delay voltage is fed to the detector of the AGM 6 from the unstabilized power supply 8 through. The T-shaped PCP chain 9. The output voltage of the AC amplifier 4 is fed to the horizontal deflection plates of the cathode-ray tube 2 through the frequency discriminator 5, which determines the scale of the sweep.

Change: the network voltage leads to a change in the voltage of the pestabilized high-voltage power supply source 7 of the tube, which causes a change in the position of the beam on the screen of the cathode-ray tube 2. A change in the voltage of the network leads to a change in the output voltage of the unstabilized power supply 8. A T-shaped PCP chain 9 to the control input of the AGC b delay detector, where it is summed from it. the voltage supplied from the output of the AC amplifier 4 and controls the amplitude of its single input voltage 5. Moreover, with an increase in this voltage, the amplitude of the output voltage of the ac-amp amplifier 4 increases, and decreases with decreasing. Thus, the JO compensates for the change in the position of the beam on the screen of the cathode-ray tube 2. Selection of the same constant Time T of the Medium Chain and the filter of the high-voltage source ensures a stable position of the beam during both slow and fast changes in the mains voltage.

Claims (2)

Invention Formula Oscillographic device for observing amplitude-frequency pairsTepncTHK, containing a vertical deflection channel, the output of which connected to vertically deflecting plates of a cathode-ray tube, horizontally deflecting plates of which are connected via frequency discriminator with an AGC detector input and an AC amplifier output, the first input of which is connected to the output of the AGC detector, and the second input signal to an intermediate frequency, unstabilized high-voltage. A new power source of the tube and an unstabilized power source, oh, and so on), in order to increase the stability of the position 0 yi of the beam on the screen, it is equipped with a T-shaped RCR-chain connected between the output of the unstabilized power source and the control input of the delay of the AGC detector, and the time constant T of the CT chain is equal to the time constant of the high-voltage power filter. SOURCES of information, taken into account in the examination: o 1. Technical description and operating instructions for the oscilloscope C1-19. 2. Technical description and operating instructions of the frequency response analyzer frequency response-24. VKOYACH