SU474860A1 - Semiautomatic device for winding inductors on toroidal cores - Google Patents

Description

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neither the coil 7 and the voltage supply to the comparison element 6, the high frequency generator 9, which determines the frequency of the controlled voltage source 8, the zero-body 10, which controls the amplitude of the voltage of the source 8, the coil 11, is made on the toroidal core slotted and inductively coupled to the loop of the pin 2, current source 12 of stable amplitude, the frequency of which is determined by the master oscillator 9, roller 13, which does not interfere with the winding torus 1 from the engine 5. Condenser 14 is designed to compensate for capacitances I I am waiting for the coils, the conductor 3, wound on the spool, and between the coils and the spool.

The end of the conductor 3 with the winding pin 2 is connected directly to the current source 12. If the winding of the conductor 3 on the toroidal core is carried out around the entire circumference in one direction, the current source 12 can be connected using a sliding circular contact. As a result of switching on the electric motor 5, the rollers 4 and 13 begin to rotate, driving the winding shaper 2 and the winding torus. The process of winding the toroidal core 1 begins. In the circuit, the winding of the toroidal core 1 and the capacitor 14 connected in series with it, taking into account the interturn capacitances of the conductor 3 wound on the shaper 2, and the capacity between the turns of the conductor and the shaper 2, the source 12 flows (see Fig. 2).

The current amplitude does not depend on the resistance of the torus winding, nor on the value of the capacitor 14 capacitance (the capacitance varies during the winding process due to the winding of the turns of the conductor 3 from the spool 2). This is due to the fact that the internal resistance of the current source 12 is significantly greater than the total resistance of the circuit of the coil 1 - the capacitor 14.

In the circuit, the shpuly 2 due to the induced emf. HU, a current / o arises (see Fig. 2), distorting the torus magnetic flux and changing the inductance of the coil.

In order to eliminate the current / o in the proposed m., A semi-automatic device has introduced into the contour of the spool 2 by means of a roller 7 a compensation emf, which is oppositely directed with respect to the emf. .about. Compensated emf interferes with the flow of current / o along the contour of the pin 2 (with full compensation when the current in the contour is absent and this is equivalent to breaking the contour of the spool 2).

To measure the current / o in the contour of the spool 2, a coil 11 is used inductively connected to the contour of the shunt 2 and wound on a toroidal core with a slit.

The presence of a current in the contour of the spool causes a voltage on the coil 11, which is marked by a null organ 10, which outputs a control signal to the voltage source 8, and exchanges its voltage so that

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to fully compensate for the emf induced in the circuit of the pin 2 due to the flow of current in the coil (in this case, the voltage of the source 8 will be proportional to the inductance of the coil).

The voltage of the source 8 by means of the element 6, comparing the voltage of the source 8 with the reference voltage, controls the motor 5 (its stop), rotating the winding shaper 2 (by means of roller 4) and the winding torch (by means of roller 13).

There are two possible modes of operation of a semiautomatic device for winding inductances on toroidal cores: winding mode with continuous measurement of the current inductance value and winding mode with control of the final value of inductance.

In the first mode, the current of the pinch 2 induced as a result of the current flowing along the winding coil from the current source 12 controls the voltage of the source 8 by means of the coil 11 measuring this current and the null organ 10 transforming the output signal of the coil I into the control signal voltage source 8.

In this case, the voltage of the source 8 with the help of the coil 7 induces a compensation emf in the circuit of the spool 2. ,; continuous balancing emf o, varying in size in the process of winding a coil and induced by the flow of a current of a source 12 of a non-amplitude amplitude across the coil.

Equality of EC and EQ is determined by the magnitude of the current / o with the help of coil 11 and zero-body 10. When, / 0 0. In this mode of operation of the semiautomatic device, the voltage of source 8 is proportional to the inductance of the coil at any time. The voltage of the source 8 is proportional to E,;, and, the latter is proportional to the inductively of the coil when / 0 0. The tracking of the inductance of the winding coil 1 by the magnitude of the voltage of the source 8 occurs continuously. The voltage of source 8 is compared with a reference voltage corresponding to a predetermined inductance, using the element of comparison 6, which gives a signal that stops the motor 5 when the inductance of the coil has reached a predetermined value. In the end inductance control mode, a certain voltage of the source 8 is set, corresponding to the increase in the inductance of the winding coil (the voltage can be set on the reference coil switched on instead of the coil 1 by fully compensating the emf of the looper 2 by changing the voltage source 8). The absence of current in the shaper 2 is determined with the aid of the coil 11 and the zero-organ 10.

The voltage of the source 8 excites a magnetic note of the coil 7, as a result of which emf is induced in the circuit of the 2. A current appears in the contour of the spool 2, this current is