SU584288A2 - Pulsed continuous ac voltage stabilizer - Google Patents

Description

one

The invention relates to the field of electrical engineering and can be used to power various radio devices.

According to the main author. St. No. 431496, a continuous-pulse device for stabilizing an alternating current voltage, contains one linear regulator, one constant current, and two pulse control loops, and the key input of each short circuit is hemone-nmnyjibcHoiY) KMyjiJip (juaniiH key switch-ny-one-one-one-one-one-hundred-one-hour). up to the current sensor of one of the linear stabilizers {; po) O1, and between the control inputs of the amplifiers there is a state of Oh j (jKa stabilizers turn on the output of the master oscillator, and the outputs of the linear stabilizers are turned on counter-parallel About each other through a common output of parallel-controlled pulse control circuits, but this device is not sufficiently reliable, since the stabilizer output is connected to the inputs of continuous control loops by feedback circuits, the transition process can go into a continuous oscillation mode, consisting in the alternate operation of the pulse circuits on each other, which ultimately leads to the extraction of key regulatory elements from

build The phenomenon of self-excitation can be eliminated by deadening the control circuit with the key control loops or by increasing the internal resistance of the pulse loops. However, this impairs the output characteristics of the stabilizer.

Pelle invented is an increase in the reliability of the device. This is achieved by the fact that in the proposed device, the jacHejiaTop is instructing the siabjei with additional conclusions, which are the keys to the nodes controlling the key elements.

11a traits (gave ipji iiUHin.ijii, Ha; i, the scheme is described (J usysoysta.

The device contains two Li-stabilizers 1 and 2 with serial 3 and 4 and parallel 5 and 6 regs, transistors, amplifiers 7 and 8 of direct current and sensors 9 and 10. of current, two switches And 12 pulsed regulation, two nodes 13 and 14 controlling the keys 15 and 16 of the pulse control circuits, the master oscillator 17, the load 18, the chokes 19 and 20, and the switching transistors 21 and 22.

The device works as follows.

The pa inputs of the amplifiers 7 and 8 of the direct current post a reference voltage from the master oscillator 17 and the output voltage of the linear stabilizers 1 and 2, respectively. From the output of the amplifiers, the error signal of these voltages controls the control transistors 3 and 4 and the keys 16 and 15, and they operate in antiphase.

In the absence of a signal from the master oscillator 17 at the inputs of the linear stabilizers 1 and 2, the same voltage values are set. In this case, the load 18 does not leak and there is no energy loss.

When applying from the master oscillator 17 to the amplifiers 7 and 8 of the direct current of the linear stabilizers 1 and 2, a potential difference appears in the antiphase of the control signals at the load 18 and current flows through it. Simultaneously from the current sensor 9 or 10, installed in the parallel regulating transistor circuit of one of the linear stabilizers, a control signal is sent to the control unit 13 and 14 of the corresponding switch 16 or 15. The same control node receives the enabling signal from the master oscillator 17, and The key control unit of the other pulse control loop (15 and 16 respectively) supplies a locking signal from the master oscillator. The first key opens, and the rising current in the pulse control loop causes the linear stabilizers to lock in, since the potential difference across the load due to the current flowing through the pulse control loop compensates for the effect of the potential difference of the linear stabilizers. This causes a decrease in current through the current sensor, and the key closes.

When the potential difference on the load exceeds a given difference due to the inertia of the elements of the pulse control circuits, the current through the linear regulator changes its direction, which can result in a high sensitivity of the current sensors to triggering another switch. In this case, the work of the pulse circuits on each other and on the throttles of the x accumulates energy, removing the keys from the system. To eliminate this, in the proposed device, the inhibit signal from the master oscillator does not allow the opposite control loop to operate, even if a current of the opposite direction in the linear regulators has occurred, and thereby prevents the activation of the control pulse circuits. During the pause of the operation of the keys, the current in the load is maintained due to the discharge of the accumulated energy of the chokes 19 and 20 through the opening of the switching transistor 21 or 22. Then the cycle is repeated until the polarity of the control signal from the master oscillator changes, and then a potential difference occurs in the load polarity, which ultimately leads to the triggering of another pulse control loop. A difference is developed between the potentials on the load and the locking of the linear stabilizers. The current through them decreases, and the pulse control loop is turned off. Then the cycle is repeated. Thus, significantly improved.

the resulting characteristics of the device and increase its reliability.

Formula and 3 about b and e and

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Continuous-pulsed device for voltage regulation of alternating current by aut. St. Ho 431496, characterized in that, in order to increase reliability, the master oscillator is provided with additional terminals that are connected to the key element control nodes.

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