SU429432A1 - FUNCTIONAL VOLTAGE CONVERTER — FREQUENCY - Google Patents

Description

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Known function transducers and voltage – frequency, containing a comparator unit and a frequency-controlled oscillator, are characterized by narrow functional-. potential opportunities. lack of accuracy and speed.

The proposed functional converter does not have these disadvantages. It differs from the known ones in that it additionally contains a saw-tooth voltage generator, an integrator unit consisting of n series-connected integrators, a comparator, a frequency-voltage converter, a switch and a memory capacitor. comparison is connected to the input of the controlled frequency generator, the output of which is connected to the input of the frequency converter - voltage. And to the output of the entire device, and the output of the converter is often a - the voltage is connected to one input of the comparator, to the other input of which the output of the integrator unit is connected, the input of the integrator unit is connected to the output of the sawtooth voltage generator, and the output of the latter is connected via a key connected to the comparator output to a memory capacitor it is connected to one input, the comparison unit, and the other input is connected to the input of the entire device.

The drawing shows a diagram of the proposed device.

The whole device is a closed tracking system consisting of a unit of Comparison unit, a forward link node A and a feedback node B. Node A consists of a pulse generator 2 with a frequency controlled by a voltage, for which, for example, a blocking generator can be used.

Output impulses of a generator. 2 using block 3 are linearly converted to

(one)

and, kzrp

The resulting voltage f / 3 is then applied to the first input of the comparator 4.

At the same time and .continuously, the clock generator 5, which periodically receives (with a period of Guo const) the next pulses. These pulses and pulses delayed by m with the help of delay line 6 are controlled by a trigger trigger in circuit 7 of the sawtooth generator. The output U kit obtained in this way goes, firstly, to the potential input of the key circuit 8 with a storage capacitor 9 at its output and, secondly, to the input of the integrator unit consisting of n series-connected integrators

10. A chain of / r integrators provides a tutorial on its output voltage of the form t / 2, which is fed to the second input of the comparator 4. The latter, at the moment of equality of and., And, - K, 1, K, P, gives a short pulse connecting the capacitor 9 to the output of the generator 7. Since the constant charge of capacitor D is very small, it has time to charge the compressor pulse to voltage, s, equal to Uc K, t, - (4) The voltage Uc goes to the second input of the block c, pa: vn /, the first input of which is converted voltage Ux - The difference Af / x Ux - and c, amplified, at / C times by the comparison unit, is used to control the frequency / output of the generator 2. The capacitor 9 by the time t is charged before the voltage n + lf Lf p PN-I / If the amplifier with a sufficiently high gain is applied in the circuit, the circuit will always work at 11x UK and the EF equation (5) will give a relation connecting the values of the input voltage Uy: and the output frequency of the generator Rvp - in the following form: Subject of the invention Functional transducer. voltage - frequency, with holding 1 block of comparable frequency controlled oscillator, characterized in that, in order to extend the functionality of the converter, to increase accuracy and speed, it additionally contains a sawtooth generator on: train, block integrators, consisting of series-connected integrators .co.parator, frequency-on-voltage converter, switch and storage capacitor, the output of the comparison unit connected to the input of the controlled frequency generator, the output of which is connected to the input of the converter The voltage is supplied to the output of the entire device, and the output of the frequency-voltage converter is connected to one input of an actor, the output of the integrator unit is connected to another input, the integrator's input is connected to the output of a linear voltage generator, and the output of the last through a switch connected to the output of the comparator, is connected to a storage capacitor, which is connected to one input of the comparison unit, and the other input is connected to the input of the whole device.

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