SU400003A1 - FERROMAGNETIC MAGNETIC DEVICE - Google Patents

Description

The invention relates to ferromagnetic magnetizable devices, contains a saturation throttle, made on two cores with combined working and control windings forming a bridge, to one diagonal of which the load and power source are connected, and the other to the source of the magnetizing sigal.

To simplify and improve efficiency. The proposed device is equipped with a control key connected to the circuit of the second diagonal of the bridge, which is shunted by a diode, and the key control circuit is connected to the non-jump sensor via zero load current.

FIG. 1 image of the described device; in fig. 2 is a key management scheme.

Saturation throttle 1 (see Fig. 1) is made on two cores 2 and 3 with identical windings 4-7 connected by a bridge circuit. A load resistance and a power source are connected to one bridge diagonal, to the other through a controlled key 8 - a source of magnetization. Diode 9, which shunts this diagonal, ensures continuity of the magnetizing current in the windings of the amplifier and positive feedback on the currents of even harmonics. At the moment of transfer of the load current through zero, which coincides with the moment of minimum of the current of the circuit magnetization circuit, the key 8

Briefly connects a source of magnetization to the bridge diagonal. At the same time, a current pulse, the amplitude of which is equal to the magnetisation current in this period of time, flows through the key. When key 8 is open, the bias current is closed through diode 9, unloading the bias source. By changing the closure duration of the switch 8, it is possible to change the average value of the bias current and adjust the output voltage of the device.

The voltage, which is normal to the instantaneous value of the current and load, is removed from the secondary winding of the current transformer 10 and passes through a limiter to the synchronizing pulse shaper made on transistors 11 and 12. At the moment the zero current passes the load, the transistors 11 and 12 are closed and the impulses are removed controlling the operation of a flip-flop made on transistors 13 and 14. A rectangular voltage from the output of the flip-flop through a transformer 15 is used to power the magnetic modulator of the pulse duration. s 16 formed on nermalloevyh cores. Depending on the magnitude of the control signal, the duration of the output pulses of this modulator varies, which, through amplifiers made on transistors 17 and 18, are compensated by a transistor switch 19. In the absence of a pulse, key 19 is locked by displacement.

Subject II 3 of the series

A ferromagnetic podmagpivaemaya device containing a saturation choke, made on two cores with sovmen, enpymi workers and control windings.

forming a bridge, to one diagonal of which a load and a power source are connected, and to another - a source of a magnetizing signal, characterized in that, in order to increase and increase the efficiency, it is equipped with a key connected in nep of the second diagonal of the bridge, which is bypassed by the diode, the key control circuit is connected to the non-transition sensor via

zero load current.

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