SU481959A1 - Contact free collector device - Google Patents

Description

(54) CONTACT-FREE CURRENT DEVICE

one

The invention relates to information and measurement technology and can be used to supply DC voltage to measuring devices located on rotating objects.

Non-contact current collection devices are known, by means of which the voltage is transmitted to rotating objects. They contain a stationary ferromagnetic magnetic core and a moving and stationary winding. The stationary winding of the device is made in the form of two sections symmetrically located relative to the movable winding.

The aim of the invention is to increase the output power and expand the scope.

For this, the device is equipped with a Roeur generator and an additional transformer, made similarly to the main one, the sections of each fixed winding of which are connected in series with the corresponding fixed winding sections of the main transformer, two identical windings connected

IB is the collector circuit of the Rører generator, and the moving windings of the transformers are connected in parallel to each other.

FIG. 1 shows one of the transformers included in the contactless current collection device; in fig. 2 is a circuit diagram of the device.

The device contains two rotating transformers, each of which is made in the form of an armored fixed core 1 (see Fig. 1) with an air gap between the inner walls. In the end parts of the magnetic circuit there are stationary coils 2 and 3, between which there is a movable winding 4 fixed on a rotating shaft 5. On the same shaft there are fixed rectifier circuit 6 diodes, Zener diode 7 and a capacitor 8. Movable windings 4 of the main and additional transformers interconnected in parallel and connected to the input of a bridge rectifier-1telnogo circuit 6, the output of which is connected

to semiconductor. Stabilitron 7 and J capacitor 8.

The fixed windings of each rotate; the transformer is wound in two wires to form a section

.9 and 10, 11 and 12, 13 and 14. 15 and 16 1

; (see Fig. 2), with sections 9 and 10 ,;

; 13 and 14 belong to the fixed winding of the main transformer, and sections /

; 11 and 12, 15 and 16 g are fixed to the additional transformer. With the specified connection of the sections of the fixed windings of rotary transformers in | device, two windings are formed, each

| yes from which is connected accordingly; to collector transistors 17 and 18; formed with transformer 19 circuit | Roehr generator.

When power supply is connected

i of the Roeur generator is self-excited and

; non-irregular voltage of rectangular shape; in the moving windings 4 is induced; the voltage that is rectified by the diodes; mi bridge circuit .6. The pulsations of the rectified Mg voltage of the voltage are smoothed by the capacitor 8. The Zener Stabilizer 7 stabilizes the rectified voltage. If, for any reason, i induces more ih winding, Zener diode 7 transmits a greater current, which flowed through those diodes of the bridge circuit 6, which were open during this period, and

This winding 4 creates a demagnetizing magnetic sidu, which directs the main magnetizing force generated by the currents flowing through the windings 9-12 and 13-16 of the Roeur generator. As a result, the resultant magnetizing force decreases and, accordingly, decreases e. d. inducible in the windings 4. Thus, a change in the parameters of the Roger generator and the magnitude of with (Resisting the load in the range of currents stabilizing the Zener diode does not change the magnitude of the output voltage.

The device provides a contactless transmission of a rotating object of a constant stabilized voltage, the value of which does not depend on the load and the parameters of the Roger generator elements.

The reliability and service life of the device (when properly performed) are determined

, mainly by the quality of the mechanical part, since the transistors in the Roger oscillator operate in the light mode.

Subject invention

 ..,

A skid-free sliding device containing a transformer with a moving winding and two non-winding windings, each of which is made in the form of two sections arranged symmetrically with C1T yositel lnr mobile, windings, in addition to the fact that in order to increase the output power and extension of the area at 1 | ENESH, it is equipped with the jpuToppM Roger gene and an additional transformer, made similarly to the main one, the sections of each fixed winding of which are connected in series with the corresponding sections of the fixed otok main transff torus to form two identical windings included in krllektornge Royer oscillator circuit and podvnvknye winding transformers connected in parallel with each other.

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