SU515096A1 - Power source - Google Patents

Description

one

The invention relates to electrical engineering and can be used as a power source for electronic equipment.

Power sources are known, consisting of a pulse stabilizer with a D C filter, a magnetically-transistor converter with a rectifier and a C-filter at its output.

Terminals of the converter are used to supply the loads both in alternating current with a pulse shape that is close to a rectangular one and in a direct current mode. However, in the latter case, the filtered voltage contains pulsations in the form of pointed bursts, which occur at the moments of switching the transducer of the hfeformer.

The purpose of the invention is to reduce the level of pulsations with constant dimensions. filter tanks, which is equivalent to reducing the size and weight of capacitors while maintaining the same levels of ripple.

This is achieved by placing an additional winding on the first and third rods of the W-shaped magnetic magnetic supply of the throttles of the pulse stabilizer, which is connected to the output: the magneto-transistor converter circuits between the rectifier bridge and the smoothing capacitor The winding of the throttles of the pulse stabilizer, the pulsations from which in series-connected parts of the additional windings of the first and third rods are equal and antiphase.

The drawing is a schematic diagram of the device. The regulating element 1 operates in the mode of pulse-width modulation, its output is connected to the main winding 2, located on the middle rod 3 of the throttle, made on an W-shaped magnetopros. This winding smoothes the pulsations of the regulating element 1.

Claims (1)

On the extreme rods 4 and 5 of the magnetic circuit, an additional winding is wound, i consisting of two parts 6 and 7, which are included in a counter-sequential manner so that pulsations induced in them from the middle rod 3 when the regulating element I is antiphase and mutually destroy. Thus, the pulsations in the additional winding are minimal, they are insignificant; The residual value may appear due to the nonidentity of the magnetic fluxes of the fourth and fifth rods. At the same time, the additional winding, formed by the series connection of two 6.7t parts located on the outermost rods 4.5, forms a separate inductance, which can be used to suppress ripple at the outputs of the magneto-transistor converter. If only one such winding is placed on the extreme rods and included in one output circuit, then it performs the role of a normal throttle. If it is necessary to reduce the pulsations on several outputs, the number of additional windings on the extreme rods increases accordingly. At the same time, their microprocessors are selected from the condition of mutual magnetic compensation of the pulsations of the individual outputs. The drawing shows one additional winding, but their number can be arbitrary. Pulsations of individual circuits are transformed into neighboring willows in antiphase, due to which mutual compensating properties appear, and additional windings can now be called compensating. The number of turns of the individual compensating winding usually does not exceed one tenth of the turns of the windings of the throttle of the pulse stabilizer. Mutual compensation of pulsations over individual outputs is almost independent of the magnitude of the consumed currents in the load circuits. Thus, the same choke is used to reduce the pulsation levels at the power supply outputs of the magnets of the yo-transistor converter, which suppresses the pulsations at the output of the regulating element. The increase in weight due to turns of compensating windings in this case is insignificant compared with the increase in the mass of filter chokes installed in each of the output circuits. The invention The power supply containing a pulse voltage regulator with D1, C-filter, to which a magnetotransistor converter with a rectifier and C-output filter, which is different in that of the NTO, is connected in order to reduce the level of pulsations and improve the weight and size of these indicators A compensating winding is turned on with a C ч h |) iltrom, and the D1 C filter магнит s magnetic core is made W-shaped, and the compensating winding consists of two parts located on the extreme rods of the specified magnetic circuit. Yes, and those included are mutually reciprocal with respect to the winding of the chokes of the DSL filter placed on the middle rod of the magnetic conductor. 4if3UJDgo adgo3 (} u П1чн (} ou / jfj Haiitu- onshpngoyi Oh oh