CN212304129U - Alternating current load indication socket - Google Patents

Abstract

An alternating current load indication socket comprises a power plug [1], a voltage indication unit [2], a load indication unit [3] and a load socket [4 ]; the voltage indicating unit [2] is used for indicating whether the power supply has voltage; and the load indicating unit [3] is used for indicating whether the working state is achieved. The advantages are that no additional power supply is needed, and the additional power consumption can be ignored; a separate control circuit is not required to be arranged; the circuit is simple and easy to realize, and can indicate whether the load is working, if the load is open, the indicator light is not on; the brightness of the load indicator lamp changes with the size of the load, so that the load condition can be better indicated.

Description

Alternating current load indication socket

Technical Field

The utility model relates to a socket, especially exchange load indication socket belongs to the electrical component field.

Background

There are various power outlets, some without indicator lights, and some with indicator lights, but indicating whether the power source is powered, i.e., indicating a power voltage signal.

There are also electric appliance adapters with power consumption status display, which can detect and display the data of each power consumption status of the electric appliance load, for example, patent ZL98248339.2, which can display the data of voltage value, current value, wattage, kilowatt hour, apparent power value, power factor, etc. of the load, but the structure is very complicated, and requires a voltage amplifier, a current amplifier, a display unit, a central processing unit, a zero-crossing detection circuit, an analog-to-digital converter, a time-base signal regenerator, a power supply circuit, etc. since the device uses many components, the circuit is complicated, and it needs to be programmed, the failure rate is high, the cost is high, and the device itself needs to consume a certain amount of power, thereby reducing the practicability.

In some occasions, the user only needs to simply and conveniently indicate whether the load connected to the socket works, but the existing power socket cannot simply and conveniently indicate whether the current load works.

Disclosure of Invention

An object of the utility model is to provide an exchange load indication socket for whether simple and convenient ground instructs the load of connection on the socket to work, be used for improving current exchange socket, in order to compensate the not enough of current supply socket function.

The utility model discloses a realize like this: an ac load indicating receptacle, comprising: a power plug [1], a voltage indicating unit [2], a load indicating unit [3] and a load socket [4 ]; wherein:

the voltage indicating unit [2] is used for indicating whether the power supply has voltage;

and the load indicating unit [3] is used for indicating whether the working state is achieved.

And the voltage indicating unit [2] is formed by connecting a diode, a resistor and a light-emitting diode in series and is electrically connected with a power plug.

The load indicating unit [3] consists of a current transformer, a diode and a light-emitting diode, wherein the primary side of the current transformer is connected in series in a connecting line of the power plug and the load socket, and the secondary side of the current transformer is connected with the diode and the light-emitting diode which are connected in parallel in the reverse direction.

The utility model discloses an advantage and effect:

(1) the device can indicate whether the load is working or not, and if the load is unloaded or the load is open, the indicator light is not on;

(2) the brightness of the indicator light changes with the size of the load, so that the working condition of the load can be simply judged;

(3) a separate control circuit is not required to be arranged;

(4) an additional power supply is not needed, and the additional power consumption is negligible;

(5) the circuit is simple and the status is indicated only by cheap light emitting diodes.

Drawings

Fig. 1 is an electrical schematic block diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings.

Referring to fig. 1, an ac load indicating receptacle includes: a power plug [1], a voltage indicating unit [2], a load indicating unit [3] and a load socket [4 ]. Wherein: the voltage indicating unit [2] is used for indicating whether the power supply has voltage; the load indicating unit [3] is used for indicating whether the load is in a working state or not.

With further reference to fig. 2, P1 is a power plug and J1 is a load outlet;

the voltage indicating unit is formed by connecting a diode D1, a resistor R1 and a light emitting diode LED1 in series, is electrically connected with a power plug P1, and lights the LED1 when the power supply is electrified;

the load indicating unit consists of a current transformer T1, a diode D2 and a light emitting diode LED2, wherein the primary side of the current transformer T1 is connected in series in a phase line connecting line of a power plug P1 and a load socket J1, and the secondary side of the current transformer T1 is connected with the diode D2 and the light emitting diode LED2 which are connected in parallel in an opposite direction. When a load connected to the load socket J1 does not work, no current flows through the primary side of the current transformer T1, the LED2 is not bright, when the load works, the current flows through the primary side of the current transformer T1, the LED2 is bright, the brightness of the LED2 is related to the load current, and the LED2 is brighter when the load current is larger, so that the load condition can be better indicated. The transformation ratio of the current transformer T1 is determined according to the magnitude of the rated current of the load.

The current transformer T1 is selected according to the load current, the LED1 and the LED2 both adopt phi 3mm high-brightness light-emitting diodes, and the D1 and the D2 adopt common 1N4007 rectifier diodes.

The load socket of the present invention can also be made into a socket board with a plurality of sockets.

Claims (1)

1. An ac load indicating receptacle, comprising: a power plug [1], a voltage indicating unit [2], a load indicating unit [3] and a load socket [4 ]; wherein:

the voltage indicating unit [2] is used for indicating whether the power supply has voltage;

the load indicating unit [3] is used for indicating whether the device is in a working state or not;

the voltage indicating unit [2] is formed by connecting a diode, a resistor and a light-emitting diode in series and is electrically connected with a power plug;

the load indicating unit [3] consists of a current transformer, a diode and a light-emitting diode, wherein the primary side of the current transformer is connected in series in a connecting line of the power plug and the load socket, and the secondary side of the current transformer is connected with the diode and the light-emitting diode which are connected in parallel in the reverse direction.

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