SU517055A1 - Wire Resistor - Google Patents

Description

(54) WIRE RESISTOR

This 11RODULL resistor 1 is a mean for use in powerful radio engineering devices for various purposes, in particular, in the equivalent of transmitting antennas,

Wire resistors are known. In which for the carbon of their inductance complex types are used, the windings are bifilar opposite, looped, eightfold, etc.

Also known is the inherent electrical coil with coils of rectangular shape and without interlayer insulation,

In this coil, three sides of each turn are located in the same plane, and the fourth side is at an angle to the specified plane corresponding to the whole winding step.

A resistor wound in this way has a large intrinsic ikduktiv bone, high resistance and low power dissipation.

Its resistivity is proportional to the number of turns. Mutual inductance in this case is positive (greater than zero), because in the turns located current

sent in one direction. The resistance of the resistor is proportional to the length of the wire on the Bay wire, the current is proportional to the wire cross section.

The aim of the invention is to increase the dissipation power of a resistor, reduce its own inductance and the number of intermediate contacts, as well as achieve a uniform distribution of the current density in the resistor.

The goal is achieved by the fact that the resistor is provided with outlets, with wiring harnessed out of the turns of the same order of the windings of the winding wire with branches from the flush loops of the mentioned ones, x turns of the lead outlets.

The loops in the turns of the harnesses are formed, B points, equidistant from the ends of BviTKOB, lying in the same plane. In addition to TOio, the average harnesses are made of even-n, islah turns, and the end of the mat, of your head is connected to the beginning,

Claims (3)

Figs, 1, 2 schematic, ideally shows the stability of the winding of a resistor with three output harnesses; in fig. 3 and 4 - the direction of the current in individual wires at some point in time; in fig. 5-8 resistors with different numbers of harnesses. The resistor consists of an insulating cage 1, one or several resistive sections 2, output cords 3 and taps 4 The winding sequence in the drawings is indicated by arrows. Outlet harnesses with taps vy.poln5pots simultaneously with the winding of resistive areas. The beginning 5 of the wire is left for removal, and a half turn of the outermost tow 3 is wound. Then, for example, ten turns of the resistive section 2 are wound, where three sides of each turn are arranged in one plane, and the fourth side is at an angle to the specified plane, corresponding to the whole winding step. Next, the coil of the middle outlet bundle 3 is laid, in which B a loop 6 is made along the length of the wire for removal. Then, the next resistive area 2 and the turn of the outer pinch are worn. At the middle point of the turn, loop 6 is also made. The subsequent layers are wound similarly. After winding the required number of layers, the beginning of the wire 5 is connected to the end of the 7 lead. The number of layers for winding the resistor by this resistance value is determined by the allowable dissipation power and the diameter of the high-resistance wire. The wire diameter is selected taking into account the surface effect, depending on the frequency. All layers in the resistive portion are wound from the same number of turns. In order to obtain taps in each lead bundle, the ends of the loops are electrically connected. In FIG. 3 and 4 show a resistor with two layers. The arrows indicate the direction of the current in the wires. From the figures it is clear that an equal number of turns and layers with the opposite direction of current is obtained. Bit with the opposite direction of the current in pairs together. The lengths of conductors between the taps in length and the currents in all turns of the resistor are equal in magnitude. Since the current in the conductor and the self-induction flow are always of the same sign, in the coils with the opposite direction of the current, self-induction flows interfere with each other, and the mutual inductance value is negative (less than zero). Hence, the inductance of the resistor is small and is determined only by the magnitude of the self-induction flux in the body of the conductor 60 turns and in the circuit formed by the reactor with taps. The dissipation power of the resistor increases in proportion to the increase in the number of layers wound, as the current through the resistor splits along separate parallel wires. Therefore, a resistor can practically be manufactured to any power dissipation of up to hundreds of watts or more. The dissipation power of the resistor also increases due to a more uniform distribution of the current density over all turns due to the equal length of the winding cables between the taps. The resistance of such a resistor decreases with increasing number of layers. The taps in the resistor, both extreme and medium to any intermediate rating, are made of loops from each turn of the lead harness. The resistor can have any number of intermediate taps (see FIG. 5-8), and the resistive sections can consist of any (even) number of turns and layers. The supply of a resistor by lead-outs with outlets from them makes it possible to manufacture low-impedance (tenths of Ohm to hundreds of ohms) wire resistors without intermediate contacts for leads and with power dissipation to hundreds or more Watts without forced cooling. The inductance of such a resistor is insignificant and, unlike the inductance of this prototype, remains unchanged with an increase in the number of turns and layers. For example, the inductance of a two-pole rammer resistor with a dissipation power of 10 OW is 0.9-1.2 µH, Claim 1: A wire resistor designed as a resistor wire wound on a rectangular frame, the three sides of each coil are located in one the fourth side is at an angle to the said plane corresponding to the winding step, characterized in that, in order to increase the dissipation power of the resistor, reduce its own inductance and the number of intermediate contacts, Side provided hatchers bundles made of windings of identical sequence numbers tapped winding pitch of the loops of each of said coils pin bundles. 2. Resistor pop, 1, differing from that with, in order to evenly distribute the current density in the resistor. loops in the turns of the harnesses are formed at points equidistant from the ends of the turns lying in the same plane. 3. The resistor according to claim 1, 1, and l and h a and b, in order to reduce its inductance, the average output harnesses are worn out from an even number of turns, and the end of the winding wire is connected to the beginning. FIG. 2 FIG L FIG. five FIG. 6 FIG. 7