SU100505A2 - Device for multiplying two quantities - Google Patents

Description

The main subject is not; 1I of the transducer with cy.MMi-ipyiomiiMii amplifiers for functional udaproizovannaya 15.nodogo podnogo 1 si, nad.dnaya. Marked for use of the call is;) Lctro1H1 and their numbers. This converter, for a piecewise .highway uprope function of any function, contains single diode and 1e cells, and it can be used for auxiliary and input signals and other types: water, ie, rubbed sections, piecewise, 1 characteristic and t.

The device is designed for the purpose of interlimating the values, which is the subject of the present invention, and is based on the use of the inventive driver. St. L 86673.

It contains two q: 5dratic blocks of diodes and a summing amplifier of direct current and calculates the number of cases of the curvature of the form:

W --- (Xi H- -2) - - (x - x.,) -,

vt tuschssis algeo) aistic.m

ireoazov1-1em expression:

The proposed device differs from the above in that:

1) in a quadratic block, due to the Nr. Meneci at its entrance, the dodo doubled the number of diodes in the anxious block part of the block;

2) to obtain the sum n of the difference of the input weights, the resistances are used, which are summed up go And block;

3) as the input impedances of the summed1: 1 its1-1lntel did not use the load resistance of the diodes.

These devices make the device easier and more economical.

The scheme of the proposed multi-device is shown in the drawing.

The input of the multiplying ycTpoiicTva is given in the following list: ggaprzhepp, iroporgi-yualy multipliers .Vj rr .v ... Etn naprzhin l; o; u; The input elements of the device are inverting force:; YYUs producing panr: xiii, also n) octopion.tatsy .; and x-2, but with opposite signs: nanometers with the ir and reverse signs are then summed up on the line x.

To obtain the sum and difference of the input quantities with the required signs, .. + (XiirF-x) and - (l, - jcg) with any combination of characters of the input variables, the circuit includes four pairs of summing resistances, the outputs of which simultaneously form two sums of input quantities with opposite signs + (x + Xz) w - (xi-lx) and two differences of these quantities also with opposite signs - | - (X - - Xz) and - (l :, - Лг).

The sum and difference of the input quantities Xi and Xz, having positive and negative signs, respectively, are sent to quadratic elements whose inputs are made in the form of diodes and L2.

The sum and difference of the values Xi and x, having the signs "- for the sum and" + for the difference, do not pass through the diodes JJi and L.

Thus, a circuit that produces a quadratic dependence for any values of input values is always supplied with a sum of values JC and X2 with only a positive sign and the difference between these values only with a negative sign.

A quadratic device is a set of cells of the same type, each of which includes an Lz-Li diode and resistances of 24 -13. The number of cells included in the circuit depends on the voltage applied to the quadratic device. At the same time, for each number of cells included, there is a linear inclination, determined by its own slope, between V.KODNY and the output voltage of the quadratic element. Due to the selection of resistance values, the set of linear characteristics approximates the quadratic (parabolic) relationship between the output and input voltage of the quadratic element.

The cells are automatically switched on due to the presence of potentiometric dividers.

 - 23 and RU -.

When applied to the voltage divider proportional to the sum or difference of the input values, and when its second end is powered from a constant voltage source U of the corresponding sign, blocking the diodes at zero input voltage, it ensures the sequential switching on of all diodes Dz - / 7i2 with increasing input voltage.

The load resistances of the diodes are at the same time the input impedance of the DC amplifier g / 1, which is the summation of the voltages from both squares, the output of which is the product of y.

The accuracy of the multiplication depends on the number of straight segments approximating a parabolic dependence equal to n - 1 number of diodes in quadratic devices (the first segment is given by the resistance). The number of diodes can naturally vary depending on the purpose of the multiplier.

Subject invention

Claims (3)

1. A device for multiplying two quantities, given by frequency voltages from 0 to 1000 g, producing a product in the form of an electrical voltage and performed according to the author. St. No. 86673, t, containing two quadratic diode blocks and a summing amplifier of constant current and calculating the product as the sum of half-sum squares and half-factors of factors, characterized in that, in order to reduce the number of diodes in quadratic blocks, auxiliary diodes transmitting voltage only one Ziak. 2. In the device according to claim 1, use resistors as a summing unit to simplify the circuit. 3. The form of the device according to claim 1, wherein revf. that in order to simplify the circuit, the load resistances of the diodes are used as the input resistances of the summing amplifier.