SU1515357A1 - Amplitude selector - Google Patents

Abstract

The invention relates to a pulse technique and can be used in amplitude analyzers of pulse signals of ionizing radiation sensors, sensors of automation systems for converting forms representing information from analog to discrete, etc. The aim of the invention is to expand the field of application by ensuring the selection of the input signal regardless of its polarity. The amplitude selector contains operational amplifiers 1 and 2, resistors 3 and 4, device output 5, input bus 6, common bus 7, control unit 8 of the reference voltage. When the selector operates on the output bus, a pulse is formed only if the input pulses, by their magnitude, would be less than a predetermined value, which is set using block 8, performed on resistors. 2 Il.

Description

(21) i43 t0206 / 2 4-21; 3 0205/2 4-21

(22) 12/08/87

() 15.10.89. Bul N 38 (75) V.I.Turchenkov (53) 621.318 (088.8)

(56) USSR Author's Certificate No. 831023, cl. H 03 K 5/2, J980.

USSR author's certificate N 1061258, cl. H 03 K, 1982.

Titze U., Schenk K. Semiconductor circuit design. M .: Mir, 1982, p.291. (5) AMPLITUDE SELECTOR

(57) The invention relates to a pulse technique and can be used in amplitude analyzers of pulse signals from ionizing radiation sensors, sensors in automation systems for converting forms representing information from analog to discrete, etc. The aim of the invention is to expand the field of application by ensuring the selection of the input signal regardless of its polarity. The amplitude selector contains operational amplifiers 1 and 2, resistors 3 and, device output 5, input bus 6, common bus 7, controllable block 8 of the reference voltage. When the selector operates on the output bus, a pulse is formed only if the input pulses, by their magnitude, would be less than a predetermined value, which is set using block 8, performed on resistors. 2 Il.

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The invention relates to a pulse technique and can be used in amplitude analyzers of pulse signals of ionizing radiation sensors, sensors of automation systems for converting forms representing information from analog to discrete, etc.

The aim of the invention is to expand the field of use by ensuring selection of the input signal regardless of its polarity.

FIG. 1 is a schematic diagram of an amplitude selector; in fig. 2 - time diagrams that show his work.

The amplitude selector contains two operational amplifiers 1 and 2, whose outputs through resistors 3 and A are connected to the output 5 of the device, and the first inputs to the input bus 6, while between the output of the first operational amplifier 1 and the common bus 7 the controlled unit is connected 8 of the reference voltage, connected by its output to the second input of the second operational amplifier 2. The second input of the first operator | Junior amplifier 1 is connected to a common bus 7. Operational amplifiers 1 and 2 are shown functionally, so their resistors in the feedback circuit and power sources in FIG. 1 not shown

In the absence of an input pulse Uj, on bus 6 from the outputs of amplifiers 1 and 2 and the output of the controlled unit 8 onopHhix voltages on the output bus 5 there is no voltage.

At the moment of time t, the bus 6 receives a positive polarity pulse with an amplitude exceeding the allowable value, which is established by means of a controllable block of 8 reference voltages. In this case, the output of the operational amplifier 1 generates a voltage of positive polarity, and from the output of the voltage divider 8, a voltage of positive polarity with amplitude equal to the set value Up. Due to the fact that the amplitude of the input pulse is greater than the set value UQ, the output of amplifier 2 produces a negative polarity voltage and with equal resistances of resistors 3 and t and saturation voltages from amplifiers 1 and 2, the voltage on the output bus 5 is zero.

At time t-2, a pulse U enters the bus 6 (5 negative polarities with amplitude exceeding the set value P, similarly, from the output of amplifier 1 and block B of the reference voltages, negative polarity voltages are generated, and at the output of amplifier 2 The positive polarity and negative polarity voltage on the input bus 5 is zero.

In the event that the magnitude of the pulse voltage on the bus 6 is less than the set value U ,, the voltages of the same polarity are generated from the outputs of the amplifiers 1 and 2, resulting in the corresponding polarity on the output bus 5.

Thus, if the magnitude of the pulse modulo is greater than a predetermined value, an output pulse is not generated.

On the output bus, pulses are generated only if the input voltage is less than a predetermined value, which is set using block 8, for example, performed on resistors with the polarity of the output pulses corresponding to the polarity of the input pulses.

Claims (1)

Invention Formula An amplitude selector containing the first and second operational amplifiers, the first outputs of which are connected to the input bus, and the outputs through resistors are connected to the output of the device, characterized in that, in order to expand the scope of use by ensuring the selection of the input signal regardless of polarity, a controlled voltage reference block is inserted connected between the output of the first operational amplifier and the common bus, the output of which is connected to the second input of the second operational amplifier, while the second input The first operational amplifier is connected to the busbar. JJi (Ue