CN203552401U - Security and alarm socket circuit - Google Patents

Abstract

The utility model provides a security and alarm socket circuit, which is characterized by comprising a self-recover single-pole double-throw jack, a parallel sound alarm circuit and a light-emitting alarm circuit. The sound alarm circuit comprises a capacitor voltage reduction voltage stabilization circuit, a buzzer and a photosensitive resistor arranged inside the socket; the light-emitting alarm circuit comprises a half-wave rectifying current-limiting circuit and a light-emitting diode; and the normally open contact of the self-recover single-pole double-throw jack is connected with an electric appliance, and the fixed cutter head is connected onto a mains supply. According to the circuit, when an electric appliance is connected and disconnected by a user, a sound and light alarm is provided at the same time, the user is prompted to cut off the connection between the socket and the mains supply, and potential safety hazards are reduced.

Description

A kind of security alarm socket circuit

Technical field

The utility model relates to distribution technique field, is specifically related to a kind of power distribution equipment.

Background technology

Along with popularizing of electrical appliance, the use of socket is also more and more.But current user is in use electric process, only take off electrical appliance, and do not pull up the plug that is connected to civil power of socket, if for a long time without this socket, aging along with socket, socket tends to exist leaky, produces unnecessary waste, even can cause socket spontaneous combustion to cause fire failure because of electrical equipment is aging.

Summary of the invention

In view of the deficiency of prior art, the utility model provides a kind of security alarm socket circuit, and this circuit can send audible and visual alarm after electrical appliance takes off, and prompting user pulls up the plug of socket, thereby reduces electricity consumption waste and potential safety hazard.

The technical scheme that this utility model addresses the above problem is as follows:

A kind of security alarm socket circuit, is characterized in that, this circuit comprises a sound alarm circuit and a luminous warning circuit of a self-resetting type single-pole double-throw (SPDT) jack, parallel connection, wherein,

The photoresistance that described sound alarm circuit is located at socket inside by a capacitance decompression mu balanced circuit, a hummer and forms, and wherein, is parallel to the output terminal of capacitance decompression mu balanced circuit after a hummer and photoresistance series connection;

Described luminous warning circuit is comprised of a half-wave rectification current-limiting circuit and a light emitting diode, light emitting diode is parallel to the output terminal of half-wave rectification current-limiting circuit, and arrange near photoresistance, the ac input end of half-wave rectification current-limiting circuit is connected across on the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack;

The normally opened contact of described self-resetting type single-pole double-throw (SPDT) jack is connected with electrical appliance, and do not connect and be connected to the live wire of civil power after a self-locking type switch in one end of dynamic cutter head, and the other end of dynamic cutter head is not connected to the zero line of civil power.

A kind of its beneficial effect of security alarm socket circuit provided by the utility model is:

When this socket access civil power of user, and press after self-locking type switch, if now user inserts electrical appliance after self-resetting type single-pole double-throw (SPDT) jack, the normally opened contact of self-resetting type single-pole double-throw (SPDT) jack is electrically connected to electrical appliance and powers with city, and the luminous warning circuit and the civil power that are connected across the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack disconnect, light emitting diode does not work, and the resistance of photoresistance is larger, and hummer is sounding not; If after now user extracts electrical appliance, the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack and city's electric connection, light emitting diode is lit, it is large that the resistance of photoresistance becomes, now hummer sounding, this security alarm socket circuit utilizes acousto-optic mode reminding user to disconnect being connected of socket and civil power, minimizing potential safety hazard.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of a specific embodiment of a kind of security alarm socket circuit described in the utility model.

Embodiment

As shown in Figure 1, the described security alarm socket circuit of this example comprises a sound alarm circuit and a luminous warning circuit of a self-resetting type single-pole double-throw (SPDT) jack S1, parallel connection.

The photoresistance R3 that described sound alarm circuit is located at socket inside by a capacitance decompression mu balanced circuit, a hummer Bell and forms, wherein, described capacitance decompression mu balanced circuit is connected to form successively by resistance R in parallel 1 and decompression capacitor C1, rectifier bridge D1, current-limiting resistance R2, voltage stabilizing diode D2 and filter capacitor C2 in parallel, is parallel to the output terminal of capacitance decompression mu balanced circuit after a hummer Bell and photoresistance R3 series connection;

Described luminous warning circuit is comprised of a half-wave rectification current-limiting circuit and a LED 1, wherein, half-wave rectification current-limiting circuit is composed in series successively by commutation diode D3, current-limiting resistance R4 and filter capacitor C3, LED 1 is parallel to the two ends of filter capacitor C3, and arrange near photoresistance R3, the ac input end of half-wave rectification current-limiting circuit is connected across on the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack S1;

The normally opened contact of described self-resetting type single-pole double-throw (SPDT) jack S1 is connected with electrical appliance RL, and do not connect and be connected to the live wire L of civil power after a self-locking type switch S2 in one end of dynamic cutter head, and the other end of dynamic cutter head is not connected to the zero line N of civil power.

The principle of work of this security alarm socket circuit is as follows:

When this socket access civil power of user, and press after self-locking type switch S2, if now user inserts electrical appliance RL after self-resetting type single-pole double-throw (SPDT) jack S1, the normally opened contact of self-resetting type single-pole double-throw (SPDT) jack S1 is electrically connected with city to electrical appliance RL and powers, and the luminous warning circuit and the civil power that are connected across the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack S1 disconnect, LED 1 does not work, and the resistance of photoresistance R3 is larger, not sounding of hummer BELL; If after now user extracts electrical appliance RL, normally closed contact and the city's electric connection of self-resetting type single-pole double-throw (SPDT) jack S1, LED 1 is lit, it is large that the resistance of photoresistance R3 becomes, now hummer BELL sounding, this circuit utilizes acousto-optic mode reminding user to disconnect being connected of socket and civil power simultaneously.

Claims (1)

1. a security alarm socket circuit, is characterized in that, this circuit comprises a sound alarm circuit and a luminous warning circuit of a self-resetting type single-pole double-throw (SPDT) jack, parallel connection, wherein,

The photoresistance that described sound alarm circuit is located at socket inside by a capacitance decompression mu balanced circuit, a hummer and forms, and wherein, is parallel to the output terminal of capacitance decompression mu balanced circuit after a hummer and photoresistance series connection;

Described luminous warning circuit is comprised of a half-wave rectification current-limiting circuit and a light emitting diode, light emitting diode is parallel to the output terminal of half-wave rectification current-limiting circuit, and arrange near photoresistance, the ac input end of half-wave rectification current-limiting circuit is connected across on the normally closed contact of self-resetting type single-pole double-throw (SPDT) jack;

The normally opened contact of described self-resetting type single-pole double-throw (SPDT) jack is connected with electrical appliance, and do not connect and be connected to the live wire of civil power after a self-locking type switch in one end of dynamic cutter head, and the other end of dynamic cutter head is not connected to the zero line of civil power.

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