RU45862U1 - SECONDARY POWER SUPPLY FOR ELECTRON-OPTICAL CONVERTER - Google Patents

Abstract

The secondary power source for 2 ⁺ and 3rd generation electron-optical converters belongs to electrical engineering and can be used in combination with various devices where primary power sources are used. The purpose of the proposed technical solution is to protect the device from high-level flare using a system that allows digital processing of feedback signals while maintaining the small dimensions of the device. The secondary power source contains: a voltage converter (3.3 V), a reference voltage source, a microcontroller with a high-level flash protection circuit installed on it, two digital-to-analog converters, an integrator for automatic brightness control, a key device, sinusoidal signal generators, voltage multipliers. The device automatically adjusts the output voltages of the multipliers when exposed to high-level flares.

Description

The proposed device relates to the field of electrical engineering and can be used in combination with various devices to obtain the necessary high-voltage voltages, ensuring the operability of the electron-optical converter.

A device for powering an electron-optical converter is known, which contains two generators, three voltage multipliers for powering the microchannel plate, a photocathode and a screen, an integrator for automatic brightness control, and a system for stabilizing output voltages depending on the ambient temperature, made in the form of a tunable reference voltage source ( US patent No. 5218194, priority date 06/08/1993).

The disadvantage of this device is the low efficiency of the protection circuit from high-level flare, made using an external electromagnetic interference filter.

Closest to the claimed technical solution - the prototype is a secondary power source for an electron-optical converter, including sinusoidal signal generators, voltage multipliers, an integrator for automatic brightness control, a microcontroller, a reference voltage source, a voltage converter, two digital-to-analog converters (RF patent No. 39224, priority date 02/09/2004).

The disadvantage of the closest technical solution is the lack of protection of the device from high-level flare.

The aim of the proposed invention is to protect the device from high-level flare while maintaining the small dimensions of the device.

This goal is achieved by the fact that the microcontroller of the device has a high-level illumination protection circuit that is part of the microcontroller control program and allows digital processing of feedback signals. With the long-term (more than 2 seconds) exposure of high-level flares to the electron-optical converter, the high-level flare protection circuit transmits a control signal to the microcontroller, which sets all the output voltages of the secondary power source to zero. This mode is exited by turning off the secondary power source.

The proposed device is illustrated by the following graphic materials:

Figure 1 - secondary power source for the electron-optical Converter

Figure 2 - electrical schematic diagram

The secondary power supply contains: voltage converter 1, reference voltage source 2, microcontroller 3, ZA high-level backlight protection circuit, two digital-to-analog converters 4 and 5, integrator for automatic brightness control 6, key device 7, sinusoidal signal generators 8 and 9, multipliers voltages 10 and 11.

Converter 1 generates a constant voltage (3.3-3.6) V for powering the microcontroller 3, the reference voltage source 2, and digital-to-analog converters 4 and 5. The microcontroller 3 is designed to control the operation of the secondary power source and adjust the output voltage depending on the external factors factors. Digital-to-analog converters 4 and 5 specify the operation mode of the generators 8 and 9. The key device 7 serves to reduce the availability of the secondary power source (the time for which the output voltages are set to 0.9 from their nominal values). Generators 8 and 9 are designed to generate sinusoidal signals, which are then

are transmitted to the multipliers 10 and 11, and the multipliers, in turn, form high constant voltage Ufk, Ufk2, Umkn, Uekr.

The secondary power source operates as follows. Supply voltage fed to the converter 1 and, at the same time, to the generator 8 and generator 9. The microcontroller 3, depending on the ambient temperature and the set initial values, gives a control signal to the digital-to-analog converter 5, which, in turn, controls the screen generator 9. In this the moment the key device 7 is triggered. The feedback signal from the generator 9 is fed to the integrator for automatic brightness control 6, amplified and transmitted to the feedback input of the microcontroller 3. Then the microcontroller 3, in Depending on the ambient temperature and the current of the integrator, the automatic brightness control generates a control signal to the digital-to-analog converter 4, which, in turn, controls the generator 8. During the long-term (more than 2 seconds) exposure of high-level illumination to the electron-optical converter, the illumination protection circuit high level B sends a control signal to microcontroller 3, which sets all output voltages of the secondary power source to zero. The exit from this mode is carried out by turning off the secondary power source.

The positive effect of the proposed technical solution lies in the fact that the device having the largest dimensions and weight allows you to automatically adjust the output voltages of the multipliers when exposed to high-level flares.

Claims (1)

A power device for an electron-optical converter containing two parallel generators, each of which is connected to voltage multipliers, a converter and a reference voltage source, a key device, a microcontroller, an integrator for automatic brightness control and digital-to-analog converters, while the input of the microcontroller is connected to the output of an automatic integrator brightness control, and two outputs are connected to digital-to-analog converters, characterized in that it is equipped high level flare protection circuitry implemented on a microcontroller.