SU1557555A2 - Relay-pulse current voltage stabilizer - Google Patents

Abstract

The invention relates to the secondary power supply sources of electronic equipment. The purpose of the invention is to improve the bulk characteristics and improve the quality of output voltage. The power transistors of converter 2 form a series of rectangular pulses if the output voltage of the stabilizer is lower than the specified one. Otherwise, both transistors of the converter are closed. The duration of the on state of none of the transistors of the converter depends on the magnitude of the input voltage and is formed by comparing the voltage of the saw voltage generator 19 at the input of the comparator 20 and the voltage of the inverting functional amplifier 18 with the inverse-square transfer characteristic. At the minimum input voltage, the duration of the control pulses at the output of power amplifier 17 is maximum and is determined by the generator frequency of 7 rectangular pulses and the counting module of the counter 12, which is two times smaller than the counting module of the counter 9, which specifies the switching period of the converter 2. 2 C . f-ly, 3 ill.

Description

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Claims (3)

Claim 1. Relay-pulse15 DC voltage stabilizer according to ed. St. 1? 1374201, characterized in that, in order to improve the mass-volume characteristics and improve the quality of the output voltage, an inverting functional amplifier with a inverse-square transfer characteristic, a sawtooth voltage generator and a comparator are introduced into it, and the first and second elements And are equipped with fourth inputs, while the inverting input the inverting functional amplifier is connected to the terminals of the low-frequency rectifier, its non-inverting input is connected to the voltage source of the installation of the operating point alternator, and the output is connected to the non-inverting input of the comparator, the first input of the sawtooth generator is connected to the output of the square-wave generator, the second input is connected to output 0 of the counter of half pulses, and the output is connected to the inverting input of the comparator, the output of which is connected to the fourth inputs of • of the second and second elements I. 2. The stabilizer according to π, 1, with respect to the fact that I am inverting a functional amplifier soderoperative amplifier, covered by a linear negative feedback Upr.Ver '. 4 a living "13 g U20 e F Ug δ u ₇ in And the greenhouse. and —ΙΓΊΓΊΠ U 18 Upper UpSf / lSiM. 1g in U2 resistor diodes in m. about l and the connection made on the resistor and m circuits connected in parallel with it, each of which consists of series-connected and diodes, and the number of circuits corresponds to the value 3. The stabilizer in π. 1, characterized in that the sawtooth voltage generator comprises a second counter η / 2 pulses, a digital-to-analog resistive converter and a capacitor, the counting input of the second pulse counter η / 2 being connected to the first input of the sawtooth generator, its R input connected to the second input of the sawtooth generator voltage, and the output is connected to the corresponding inputs of the resistive digital-to-analog converter, the output of which, connected by a capacitor, is connected to the output of the sawtooth voltage generator.