SU1350656A1 - Power regulating device - Google Patents

Abstract

The invention relates to electrical engineering. The purpose of the invention is to increase the stability of the output power with changes in the input voltage level. Under the influence of the trapezoidal pulsating voltage, capacitor 3 is charged. When the voltage of capacitor 3 exceeds the voltage of resistor 6, whose shape and magnitude are determined by the input voltage, transistor 4 opens and opens thyristor 2. When the thyristor 2 is open, a current flows from the load the rest of the half-wave input voltage. In the proposed scheme, the average current on the load during voltage fluctuations of the network is stabilized. 1 il. from 9 (L with: 12 plpp - 9 with SD about O5 O1 about:

Description

one

The invention relates to electrical engineering and can be used in heating furnaces, thermostats, and the like.

The aim of the invention is to increase the stability of the output power when the input voltage level changes.

The drawing shows a schematic diagram of the device. The circuit contains a zener diode IjTHristor 2, a capacitor

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The resistor 4, diode 5, the first resistive divider of resistors 6 and 7, the second resistive divider of resistors 8 and adjustable resistor 9. the first 10 and second 11 pins for connecting the load, the source 12 of the pulsating voltage, the positive output of which connected to the anode of the thyristor 25 by the cathode of Zener diode 1, the first lead of capacitor 3 and the free lead of resistor 6, the negative lead to free leads of resistor 7 and S and the second lead 11 for connecting the load. The common lead of resistors 6 and 7 through the emitter-bang junction pnp-trans The source 4 is connected to the control electrode of the thyristor 2. The common lead of the resistor 8 and adjustable resistor 9 is connected to the anode of the zener diode 1. The free lead of the adjustable resistor 9 is connected to the second pin of the capacitor 3 by the pnp transis; and the cathode of the diode 5, the anode of which is connected to the cathode of the thyristor 2,

The device works as follows.

Under the action of the trapezoidal pulsating voltage, the amplitude of which is determined by the stabilization voltage of the Zener diode 1, the capacitor 3 is charged through the adjustable resistor 9. When the voltage of the capacitor 3 exceeds the sinusoidal voltage of the resistor 6, the transistor 4 opens in a circuit; the positive output of source 12 (pulsed, voltage, resistor 6. emitter-collector of transistor 4, control electrode of thyristor 2, load; minus output of pulsed voltage source 12

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opens the thyristor 2 and a current flows from the rest of the half-wave of the supply voltage on the load. At the same time, through the open thyristor 2 and diode 5, a circuit is created to discharge the capacitor 3.

Upon completion of the half-wave of the supply voltage, the thyristor closes 10 seconds, and the process repeats. I

By varying the resistance of the adjustable resistor 9, it is possible to open the tirisyur 8 during the time of the half-wave of the supply voltage, the compartment of its front part.

Formula

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A power control device containing a zener diode and a thyristor connected by an anode to a positive terminal for connecting a source of pulsating voltage and to the first terminal of a capacitor, a cathode to a first terminal for connecting a load, and the control electrodes to the collector a transistor, wherein a second output for connecting the load is connected to a negative output for connecting a source of pulsating voltage, characterized in that, in order to increase the output power stability when changing and the input voltage level, a diode and two resistive dividers are inserted, the first resistive divider is connected, the extreme leads to the terminals for connecting the source of the pulsating voltage, and the middle lead to the emitter of the pnp transistor5 the second divider contains an unregulated and adjustable resistors, the average output of the second resistive divider is connected to the anode of the Zener diode, the cathode of which is connected to the thyristor anode and the J terminal of the second resistive divider on the side of the unregulated resistor, connect. There is a negative terminal of the pulsating voltage source, the other extreme terminal is connected to the second capacitor output, the pnp transistor base and the cathode of the diode, the anode of which is connected to the thyristor cathode ..

Claims (1)

Formula of Procurement A device for controlling power, containing a zener diode and a thyristor, connected by an anode to a positive terminal for connecting a pulsating voltage source and to the first terminal of a capacitor, cathode. House at NII - to the first terminal for connecting the load, and the control of the electric one - to the collector of the rpn transistor, this second terminal for connecting the load is connected to the negative terminal for connecting the source of heat and for the purpose of using a pulsating voltage, repetitive that , increasing the stability of the power when changing level 35 ny input voltage, introduced a diode and two resistive dividers, and the first resistive divider is connected. extreme conclusions to the conclusions for connecting the source of the ripple voltage, and the middle conclusion to the emitter of the p-p-p-transistor, the second divider contains unregulated and adjustable resistors, the middle output of the second resistive divider is connected to the anode of the zener diode, the cathode of which is connected to the anode of the thyristor, the extreme the output of the second resistive divider from the unregulated resistor is connected. yen with a negative output of a pulsating voltage source, the other extreme output is connected to the second output of the capacitor, the base of the p-p-transistor and the cathode of the diode, the anode of which is connected to the cathode of the thyristor ..