SU117653A1 - Device for converting electrical voltages to digital form - Google Patents

Description

Devices are known for converting quantities represented by time-varying electrical power to digital form, consisting of a comparison unit, a register, and a converter from digital form to continuous. However, the results of their work are not always sufficiently reliable.

The present invention allows to increase the reliability of the device. This is achieved by the fact that the number register is composed of a series of unrelated between, a triggers, and a control unit consists of a series (by the number of register triggers) of one-vibrators, which send pulses to the inputs of the unit and the zero of all register triggers (starting with higher order), and a number of coincidence circuits connected to the inputs of the register's zero triggers and transmitting pulses, when the value of the number in the register exceeds the actual value of the input value, and does not pass when it is less.

FIG. 1 shows a block diagram of the device; in fig. 2 - schematic diagram of the device.

The device consists of a comparison unit /, a conversion unit from digital form to continuous 2 and control unit 3.

The comparison unit consists of a DC amplifier in the summation mode and an asymmetrical trigger Tp, which changes its state depending on the sign of the difference between the two compared and applied to the amplifier (supplied to the input of the device from the digital-to-continuous conversion unit).

The digital-to-continuous conversion unit consists

from a number of keys / Ci / ("controlled by triggers of the TpiГ / register,

includes resistance proportional to the values of the numbers represented by the corresponding bits.

No. 117653

The control unit consists of a series of coincidence circuits that have one common bus, representing 15xcc comparison, controlling the register triggers with E-V settings, and a series of single-oscillators.

OBIOV, sending pulses to set the O of its trigger and

setpoint / –– follow. The conversion is performed cyclically during the response time of the entire chain of multivibrators, triggered by the input NM pulses sent at the time of conversion.

The device works as follows. First produced

Tsignach imiuls "reset, then all the triggers are reset to the initial position, taken conditionally as the position /. In this position, all keys / CiK circuits are closed. After the impulse is “started, a start will occur sequentially, as the 0 1OV single-shot“ keys ”open, the keys will be opened, starting from the highest bit.

The position of the keys will be monitored through feedback devices from the output of the comparison unit.

Depending on the results of comparing the values supplied to the input of the device and its digital value in the register, either permitting or blocking voltage levels are applied to the coincidence circuit that regulates the impulse from the single vibrators to the settings O of each register trigger.

Subject invention

A device for converting electric voltage values into a digital form consisting of a register of a number, a comparison unit, a conversion unit from a digital form into a continuous one and a control device, characterized in that, in order to increase the reliability of the device, the number register is composed a series of unrelated triggers, and the control unit consists of a series (but the number of register flip-flops) of one-vibrators that send pulses sequentially to the inputs of the unit and the zero of all register triggers (starting with the highest of bits), and a number of coincidence circuits connected to the inputs of the register flip-flops zero and skipping pulses when the value of the register value exceeds the actual value of the feed and does not pass when it is smaller.