SU11437A1 - Apparatus for converting alternating current into constant current - Google Patents

Description

The proposed device is intended to convert an ac alternating current into a pulsating constant and constant into a low frequency alternating current or into another constant voltage.

In FIG. Figure 1 shows the circuit diagram of the device in case it is used to convert AC to constant n; FIG. 2- for converting direct current into a voltage of another voltage; fkg 3 and 4, modifications of the device shown in FIG. one.

The device consists of a polarized relay (naar., Vodo, Siemens, Priss, etc.), in which a capacitor C and an ohmic resistance of r and an electromagnet are respectively connected to the winding circuit of an electromagnet.

The windings mentioned are interconnected at point A, the ends of the resistance r and / are connected to the relay contact and secondary winding of a conventional AC transformer, and the middle point 7c of the electromagnet windings is connected to another contact and relay and also to the transformer (Fig. 1 ).

When converting alternating current into constant current, the inrush current applied to the terminal // of the winding S of the transformer induces an increased or decreased voltage in the secondary winding, which, depending on the current direction and polarity of the relay, will cause a pe.ie roll from one contact to another. If, for example, in the initial position the bark is located at the contact n and the current in the transformer has a direction from the middle of the transformer winding to the left, then in the winding b it will almost immediately become established and will tend to pull the relay to the contact t, while in the winding a, due to the presence of capacitance, a current advance is created and the last one in magnitude will be much larger than in both flows b, which have significant resistance R.

In view of the difference of currents in windings a and 6, the electromagnet cores and measles will be magnetised and held at the contact n, but as the capacitor charges, the current in the winding a will fall and as the measles begin to move to the contact t. At the moment of contact rupture pe.Tie and contact n, capacitor C will begin to discharge through both windings of the relay 1 rt rRblcaC, as a result of which the current on the winding a will go in the opposite direction of the euro and TUE as the direction of the current in both circuits minimum voltage in danna Currently in obshtke transformer,

Measuring at high speed, it moves to the contact t. When the contact reaches 771, the current in the transformer will increase and will have an opposite direction, as a result of which the above process will be repeated in the opposite direction. In this case, when measles is in contact with contact l, a tsetz is formed consisting of a transformer winding P, valued at the terminals I, a core, a contact, and a wire d, and the upper terminal I will receive a positive, fused, current from the transformer. When the core moves to the contact t, a 1m IP circuit is formed, with the positive pole again on the upper terminal I. Thus, at terminals I, a pulsating current of one direction is obtained, which can be used either directly or after pre-treatment with an appropriate filter. The operation of the core and the pits is done without sparking, since the corresponding values of C, g and / in accordance with the frequency of the current and the values of the windings of the windings ensure synchronism of the opening of the direct current circuit with the moment of transition in the transformer through a zero value.

When converting direct current to non-transient, the circuit remains the same, direct current is supplied to terminal I, and its direction is consistent with the polarity of the relay.

Since the direct current source is locked to the transformer's winding and sends a alternating current to it, an alternating current is obtained on Zagkim II, the number of periods of which can vary over a wide range according to the selection of the oscillating circuit.

When converting direct current into direct current of another voltage, an additional contact system is introduced into the device, isolated from the main one (Fig. 2), to which the second transformer winding is connected.

DC current is supplied to terminals I as described above, actuates a relay, converts it into an alternating current, the voltage of which is transformed by a transformer, after which the current is rectified by an additional contact device (Fig. 2) and another voltage is received at terminal II. tension

In oscillating circuit. Capacitor C

in the winding, a can be replaced with a reactive cable 5 (fig. 3). In this case, the measles will be delayed by any contact n t, the steady-state current in the winding b, because in the winding a, due to greater self-induction, the current of the opposite sign will lag first and then increase to a value greater than the current in the winding b , since there is no winding in the circuit and ohmic resistance and will cause measles to be transferred to another contact. Pa figs. 4 into the winding and turn on the reactive coil S, and into the winding the b capacitor C. The action of this circuit is this: a large amount of current is created in the circuit due to advance, and in the circuit the a-current is delayed and the measles are delayed at one of the contacts. Subsequently, the current in the circuit increases, and in .6 it falls, and the measles move to another contact. When the circuit is broken, the discharge current of the capacitor and the extracurrent of the reactive coil coincide in direction and the measles are transferred to the other contact at high speed.

The subject of the patent.

1. A device for converting electric alternating current into a constant one and vice versa using a polarized relay (for example, Water, Siemens, etc.), characterized by the windings of electromagnets a b in the circuit parallel connected to the secondary winding of the transformer P polarized relay, designed by means of contacts, the type of connecting a direct current circuit I alternately to two sections of the secondary winding of the transformer P, is connected in series with one winding capacitor C ohmic resistance / -, With some other resistance impedance R (Fig. 1).

2. Variation of the device described in paragraph 1, characterized in that the capacitor C and the resistance r, connected in series with one of the windings of the relay electromagnets, are replaced with a reactive coil 8 (Fig. 3).

3. The change described in section 2 of the device, characterized by the fact that the ohmic resistance, connected in series with the winding of electromagnets, is replaced by capacitor C (Fig. 4).

4. Modification of the device described in Section 2, used to convert direct current into constant, increased or decreased voltage, which means that to convert the alternating current into constant current, which is transformed into continuous 6, into a constant winding, S is connected additional rectifying contact application.

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