CN2481031Y - Multi-function power switching off alarm device - Google Patents

Abstract

A multi-function power switching off alarm device utilizes an adjustable transformer outputting low voltage direct current, which is characterized in that: the output circuit of the transformer is provided with a multi-function option switch, one circuit is connected to the output terminal wire of a power source, the other circuit is connected to a power off detecting circuit formed by relay coil; additionally, the output circuit of the transformer is provided with a warning circuit constructed with a alarm chip, a frequent-close contact of the relay is connected in series in the circuit of the power source. The utility model either can be used as the power source of the low voltage direct current, or can be used as the power off alarming device. The utility model is of a simple structure and reliable work.

Description

Multi-functional power-off alarm

The utility model relates to alarm.More particularly, be a kind of multi-functional power-off alarm.

Along with the development of society, electric utility is also in rapid development constantly.Electrical network in length and breadth, for the volume increase of town and country industrial or agricultural, increase income, synergy established solid foundation.But in the face of the electrical network that gathers, some unprincipled fellows get individual private interests for certain, do not stint the country and people's loss, steal electric wire, serious harm normal order.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of multi-functional power-off alarm is provided, and when having the line of robber alert to take place, sends warning immediately, to stop this type of illegal activities.

The purpose of this utility model is achieved through the following technical solutions:

The utility model adopts the adjustable transformer KTB that is output as low-voltage direct 3V-12V.

Design feature of the present utility model is:

A, in the output loop of described adjustable transformer KTB, the optional functional select switch K1 of two-way is set, wherein one the road to power output end line A, another road is to the outage detection loop that is made of relay coil J;

B, be provided with dry cell E be power supply, by the warning circuit that alarm chip IC constitutes, the normally-closed contact j of relay J is connected in its electric power loop.

The utlity model has following advantage:

1, the utility model is to be power supply apparatus with low-voltage direct adjustable transformer of the prior art, and by outage detection and warning circuit are set, making is having the line of robber alert to take place, and when causing outage, sends news immediately and rings, and realizes power alarm.It is simple in structure, cost is low, reliable operation, less energy consumption.

2, the utility model has kept the original function of low-voltage direct adjustable transformer simultaneously, promptly as the adjustable low-voltage dc power supply of 3V-12V.Usually by day the time, the utility model normally uses as low-voltage dc power supply; And when night, be set to alarm condition.

Accompanying drawing is the utility model structural representation.

By the following examples, in conjunction with the accompanying drawings the utility model is further described.

Embodiment:

Referring to accompanying drawing, present embodiment adopts the universal adjustable transformer KTB that is output as low-voltage direct 3V-12V, and this transformer KTB output voltage is adjustable at 3V-12V, and positive and negative polarity is convertible, has the light-emitting diode that can indicate operate as normal.

As shown in the figure, in the output loop of adjustable transformer KTB, the optional functional select switch K1 of two-way is set, wherein one the tunnel connects the 1st pin to power output end line A; Another road connects the 2nd pin to the outage detection loop that is made of relay coil J.Setting with dry cell E be power supply, by the warning circuit that alarm chip IC constitutes, the normally-closed contact j of relay J is connected in its electric power loop.

When functional select switch K1 selects to connect the 1st pin, alarm switch K2 opens.At this moment, normal low-voltage direct output is arranged on A, B end line, complete machine uses as low-voltage dc power supply.Can be used for calculator, game machine, radio-cassette player, minitelevision, electronic toy, electronic organ and small-sized sound equipment etc.

When functional select switch K1 selects to connect 2 pin, alarm switch K2 closure.At this moment, the relay J coil gets electric, and its normally-closed contact j opens, and warning circuit drops on the alert.In case outage is arranged, relay J coil losing electricity, its normally-closed contact j transfer to connect, and warning circuit sends news immediately and rings.After this, opening K switch 2 can stop to report to the police.

Alarm chip IC in the present embodiment also may be selected to be speech chip, specifically adopts existing general-purpose device on the market.

Claims (1)

1, multi-functional power-off alarm adopts the adjustable transformer KTB that is output as low-voltage direct (3V-12V), it is characterized in that:

A, in the output loop of described adjustable transformer KTB, the optional functional select switch K1 of two-way is set, wherein one tunnel (1 pin) be to power output end line A, another road (2 pin) is to the outage detection loop that is made of relay coil J;

B, be provided with dry cell E be power supply, by the warning circuit that alarm chip IC constitutes, the normally-closed contact j of relay J is connected in its electric power loop.

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