SU1182622A1 - Device for pulse-width controlling of pulse regulator - Google Patents

Abstract

DEVICE PULSE-daShULSNOGO CONTROL IMPULSNM REGULATOR containing RS-trigger is connected with one input to the output of the pulse generator, the other input connected to the output of the comparator, and the output coupled to the control input of the power key, an integrating RC-circuit connected between the output of a power key and a common bus, moreover, the capacitor is shunted with a discharge key, and the midpoint of the KS circuit is connected to one of the inputs, a parator, the other input of which is connected to the terminal for connecting the control voltage, This is due to the fact that, in order to improve the quality of the output voltage by reducing the influence of disturbances along the power supply circuit on the average value of the output voltage and the nonlinearity of the regulating characteristic, a logical element I is inserted into it, one input of which is connected The output of the comparator's house, the other with the RS-trigger output, and the output are connected to the control input of the dongle.

Description

8th L Euh

The invention relates to electrostatics and can be used in constant-current and alternating current power supplies.

The purpose of the invention is to improve the quality of the output voltage by reducing the influence of disturbances along the power supply circuit on the average value of the output voltage and the nonlinearity of the control characteristic.

FIG. 1 shows a diagram of the device; in fig. 2 - time diagrams that show his work.

The device contains a generator of 1 rectangular pulses, connected - (niiiM n.h "RS-trgger 2 codes, second -: - and. (; H cot1) is connected to the output, 1, o; 1; one of the comparator input is supplied as a control) 1: ;;, and the second input is connected to (the RC center point, consisting of resistor 4 and capacitor 5, which is connected aa power input of the power switch 6 .. Kon / geisator 5 of the KS circuit shunted dfd111m with key 7, the input of which is connected to the logical element AND 8, One output of the element AND is connected to the output of the comparator 3, the second to the output of the griger1) a 2, and the output trig EPA 2 is a output control device connected to a power key uprall yuschemu entry .regul torus. . .

The device works as follows. .

In the initial state at the output of the RS-Trigger. 2 and one of the inputs, the element. And 8 - logical 1, at the outputs of the element And 8, and the comparator 3 - logical 0. The power switch 6 is open, the capacitor 5 is charged, At the moment when: on the capacitor 5, for example, reaches the control voltage (Fig. 2a), the output of the comparator 3 is the signal of the logical VI (Fig. 26), coming to the input of the element And 8, the output of which

An optical 1 (Fig. 2c) is supplied to the control input of the bit-key. Capacitor 5 is discharged. At the same time, the signal from the output of the comparator 3 is fed to one of the inputs of the RS flip-flop 2 and translates it into the opposite state (Figure 2d). At the output of flip-flop 2, a magic O appears, which translates the element AND 8 into the state of logical O. Thus, at the output of the element And 8 a short pulse appears that is equal to the switching delay of the RS flip-flop 2. The capacitor is almost instantly discharged 5, and the duration of the discharge does not depend on the characteristics of the comparator 3, the off time, the hysteresis. After the flip-flop of trigger 2, a blocking voltage is applied to the input of the power switch 6, but the bout switch is locked through time -VYA (Fig. 2d). During this time, a charge of the capacitor 5 occurs. After locking the power switch 6, the voltage on the capacitor 5 remains HeH3Mepnib M. The next cycle of unlocking the switch 6 begins with the start pulse 2 being fed to the input 2 of the generator 1 (FIG. 2e). In this case, after the power switch 6 is depressed, the charge of the capacitor-5 capacitance begins with a certain amount, proportional to the delay in switching off the power switch 6, to the level of the control voltage. Therefore, the control pulse duration will be less than the integration time of the output, voltage of the public key by the delay time of the power key.

When adjusting the output voltage, the delay in switching off the power switch leads to a non-linearity of the control characteristic, which is connected. with changing off time from the operation mode.

f 1-

Srig. 2

Claims (1)

A PULSE-PULSE CONTROL DEVICE FOR A PULSE CONTROLLER, comprising an RS trigger connected to an output of a pulse generator by one input, connected to a comparator output by another input, and connected to a control input of a power switch by an output, integrating an RC circuit connected between the power switch output and a common bus, and the capacitor is shunted with a bit key, and the midpoint of the RC circuit is connected to one of the inputs of the comparator, the other input of which is connected to the terminal for connecting the control voltage, distinguishing In order to improve the quality of the output voltage by reducing the influence of disturbances in the supply circuit on the average value of the output voltage and the non-linearity of the control characteristic, a logical element I is introduced into it, one input of which is connected to the output of the comparator, and the other to the output of the RS-trigger , and the output is connected to the control input of the bit key. FIG. 7 1182622 2