CN2129946Y - Module type ac power supply automatic voltage regulator - Google Patents

Abstract

The utility model relates to a module type automatic voltage regulator for an AC power supply, which is composed of a transformer, a rectifying circuit, a voltage regulating circuit and a relay. The utility model is characterized in that the voltage regulating circuit is composed of a ZTY module and an adjustable resistor, which makes the utility model have the advantages of simple circuit, simple manufacture technology, low cost and big voltage-regulating range, and even if the AC voltage is reduced to 150V, an electric appliance can work normally. The module type automatic voltage regulator for an AC power supply is suitable for enterprise units and households, and in particular for the extensive rural countries.

Description

Module type ac power supply automatic voltage regulator

The utility model is a kind of improved modular AC power automatic voltage regulator.

Existing ac automatic voltage regulator, the general control circuit of forming by many transistors and some Resistor-Capacitor Units, pilot relay absorbs, and realizes the replacing transformer tapping, to reach the purpose of lifting voltage.This device not only the circuit complexity, part is many, cost is high, and range of regulation is little, sensitivity is low, make and the equal difficulty of debugging.Be unsuitable for extensively promoting the use of.And have a lot of places supply voltage when peak of power consumption very low at present, influence the normal operation of consuming device or household electrical appliance, press for a kind of simple in structure, cost is low, highly sensitive, AC automatic regulator that range of regulation is big, regulate supply voltage, guarantee the normal operation of consuming device.

The purpose of this utility model provides a kind of simple in structure, cost is low, range of regulation is big modular AC power automatic voltage regulator, to adapt to the needs of the particularly vast rural area of constituent parts and family to the AC power automatic Regulation.

The utility model is achieved in that modular AC power automatic voltage regulator is made of transformer, rectification circuit, regulating circuit and relay, its regulating circuit by ZTY module and adjustable resistance form, the sampling voltage of transformer is after the rectification circuit rectification.The both positive and negative polarity of its output both positive and negative polarity and module joins, and the control utmost point of adjustable resistance and module joins.The promotion utmost point of module and the coil of relay join.When grid voltage change, sampling voltage is lifting thereupon, orders about the suction of ZTY module controls relay and puts, and realizes changing-over transformer output tap, reaches the purpose of automatic regulation voltage.

This pressure regulator simplifies circuit owing to adopt the pressure regulation of ZTY module controls greatly, and the part of its control circuit reduces 80% than existing pressure regulator, and manufacture craft is simple, and cost is low.Range of regulation is big, reliability and sensitivity all are better than existing apparatus.This pressure regulator can carry out pressure regulation to the AC power of electric equipment and household electrical appliance, even when alternating voltage is low to moderate 150 volts, still can guarantee the operate as normal of electrical equipment.This pressure regulator is suitable for constituent parts and family, and particularly vast rural area is popularized and used.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the circuit theory diagrams of modular AC power automatic voltage regulator

With reference to Fig. 1, modular AC power automatic voltage regulator is made of transformer (2), rectification circuit (3), regulating circuit and relay (6), and its regulating circuit adopts a ZTY module and an adjustable resistance (4) to form.The input voltage of transformer (2) can be positioned at the middle position of input winding with the winding of the sampling voltage of 220 volts or 110 volts 380 volts transformers (2), when the alternating voltage of input adds to transformer (2), a low pressure sampling of the central self coupling winding output power supply of transformer (2), its magnitude of voltage needs to be complementary with the operating voltage of relay coil (6), this sampling power supply is by after rectification circuit (3) rectification, supply with the positive pole (A) and the negative pole (D) of ZTY module (5), rectification circuit (3) can be a bridge circuit, also half-wave rectifying circuit, capacitor (C) is a filter capacitor.Adjustable resistance (4) joins with the control utmost point (B) of module (5).The CONTROLLED POTENTIAL of scalable ZTY module (5) the control utmost point (B), its resistance can be selected for use in 2000 ohm at 330 ohm; The promotion utmost point (C) the pilot relay coil (6) of ZTY module (5).At input voltage just often, keep certain potentials on the control utmost point (B) point of ZTY module (5), guarantee that it promotes the utmost point (C) and not conducting of negative pole (D), relay coil (6) is in the inoperative situation, make relay contact (1) keep former normally closed situation, guarantee that voltage equates output circuit with direct connection of input circuit; When being lower than certain value, (can set up) input voltage, the sampling voltage of transformer (2) reduces, when the current potential of ZTY module (5) the control utmost point (B) is low to moderate by situation, its C utmost point and the conducting of the D utmost point, make the promotion utmost point (C) of ZTY module (5) that a negative potential is provided,, cause relay contact (1) adhesive for relay coil (6) work, connect normally opened contact, make the output tap replacing of transformer (2) and boosted voltage.When going back up to certain value, (can set up) line voltage, sampling voltage increases, the control utmost point (B) the some current potential of ZTY module (5) rises and the C utmost point and the D utmost point is disconnected, the promotion utmost point (C) dead electricity of ZTY module (5), relay coil (6) quits work, relay contact (1) disconnects normally opened contact thereupon discharging, connect normally closed contact, makes outlet line reset into the situation that connects with the direct electricity of input circuit and stops pressure regulator and boost.When the alternating voltage of input is low to moderate 150 volts, still can guarantee the consuming device operate as normal.This automatic voltage regulator can adopt single-stage regulating circuit or multi-stage pressure regulating electrical equipment, and the multi-stage pressure regulating circuit is made up of a plurality of modules (5) and adjustable resistance, to increase range of regulation.

Claims (4)

1, a kind of improved modular AC power automatic voltage regulator, it is made of transformer (2), rectification circuit (3), regulating circuit and relay (6), it is characterized in that regulating circuit is made up of ZTY module (5) and adjustable resistance (4), the control utmost point (B) of module (5) joins with adjustable resistance (4), the positive pole (A) of module (5) and negative pole (B) join with rectification circuit (3) output both positive and negative polarity, the promotion utmost point (C) of module (5) joins with the coil (6) of relay, and its normally closed contact (1) is serially connected in the output loop of transformer (2).

2, pressure regulator according to claim 1 is characterized in that the resistance of adjustable resistance (4) can be selected in 330 ohm～2000 ohm.

3, pressure regulator according to claim 1 is characterized in that pressure regulator can adopt single-stage regulating circuit or multi-stage pressure regulating circuit.

4, pressure regulator according to claim 1 is characterized in that the winding of the sampling voltage of transformer (2) should be positioned at the middle position of input winding.

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