SU1401389A2 - Pulse amplitude-to-d.c. voltage converter - Google Patents

Abstract

The invention relates to a pulse technique and serves to extend the functionality of a converter. The converter contains a comparator 1, a trigger 2, a generator 3 of reset pulses, a key 4, a controlled integrator 5 and a source 6 of constant voltage. The introduction of differentiation, the circuit 7 of it, the element OR 8, and the formation of new functional connections provide an additional transformation of the amplitude of the unipolar pulses. 2 Il.

Description

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The invention relates to a pulse technique and is an improvement of the device according to the authors. St. No. 1233056.

The purpose of the invention is to enhance the functionality by providing additional conversion of unipolar pulses.

FIG. 1 shows a functional diagram of the converter; in fig. 2 - diagrams explaining his work for the case of two-pole pulses, the absence of a signal at the input of unipolar pulses with residual voltage.

The converter contains a comparator 1, a trigger 2, a generator 3 of reset pulses, a key 4, a controlled integrator 5, a source 6 of constant voltage, a differentiating circuit 7, a logical element OR 8.

The first input of the comparator 1 is connected to the input bus, the second input is connected to the output bus and the integrator output 5, and the output is connected to the input of the trigger 2 installation via the differentiating circuit 7. The reset input of the trigger 2 is connected to the output of the generator 3, and the output is to the first the input of the element OR 8, the second input of which is connected to the output of the comparator 1, and the output through the key 4 to the control input of the integrator 5, the input of which is connected to the output of the source 6.

The Converter operates as follows.

The comparator 1 compares the voltage value on the output of the integrator 5 and the amplitude of the input pulse (Fig. 2a). If the amplitude of the input pulse is larger, then pulses are generated at the output of comparator 1 (Fig. 2c). In this case, in the case of unipolar pulses having a residual constant voltage exceeding the voltage at the output of the integrator 5, a pulse is formed, the duration of which is sufficient to achieve the residual voltage at the output of the integrator 5 (Fig. 2c). In the absence of a signal at the input, the comparator 1 generates pulses during the time and voltage reduction from the output of the integrator 5 at the voltage at its input (Fig. 2c). On the front of the pulses formed by the comparator 1, the differentiating circuit 7 generates pulses that set the trigger 2 to the state "1" (Fig. 2c). Trigger 2 is in this state until the moment when the reset pulse from generator 3 arrives (Fig. 2e). In this case, signals from trigger 2 and output of comparator 1 through the element OR 8 (Fig. 2d) are fed to the key control input 4, which switches the controlled integrator 5 to the integration mode

in the forward direction, the voltage from the output of source 6 (Fig. 2f). An increasing voltage is generated at the output of the integrator 5.

As long as the voltage at the output of the integrator 5 is less than the input voltage (bipolar pulses, unipolar pulses, constant voltage), it increases. If this condition ceases to be fulfilled, trigger 2 becomes a reset pulse from generator 3 and the output voltage of integrator 5 decreases until it becomes less than the amplitude of the input pulses. Then the first pulse trigger 2 is again set to state "1 and the process enters a steady state, with the voltage at the output of the integrator 5 oscillating around a voltage equal to the voltage of the amplitude and pulses at the input. In the absence of a signal or constant voltage

Q at the input, the output voltage of the integrator 5 oscillates at voltage values equal to the input voltage.

Claims (1)

Invention Formula Pulse amplitude converter to direct voltage according to aut. St. No. 1233056 characterized in that, in order to extend the functionality by providing additional amplitude conversion of unipolar pulses, a differentiating circuit and an OR element are introduced into it, and the output of the comparator is connected to the input of the tr-igger installation through a differentiating circuit, and the first input of the logical element OR is directly, the second input of the logical element OR is connected to the output of the trigger, and the output is connected to the input of the key. /. /