CN2201734Y - Multiple time section delaying self-control power supply plug - Google Patents

Abstract

The utility model relates to a single-phase power plug for civil and industrial single-phase electric appliances of which the power is less than 2KW; the utility model can carry out six time-interval selection, and can be reliably and automatically switched on or off when the time limit achieves a preset value. The utility model is characterized in that the utility model takes the most advanced high-precision integrated circuit as a core to cause the product of the utility model to have the advantages of simple manufacturing process, small volume, low cost, accurate delay time, wide application scope and safe performance by a voltage reducing circuit, a time delay circuit, a control circuit, etc.

Description

Multiple time section delaying self-control power supply plug

The utility model relates to power to carry out for six periods less than the civilian and industrial single-phase electrical equipment of 2000W and adjusts, and was switched on or switched off a kind of Single-phase plug of power supply when the time limit reaches predetermined value reliably automatically.

At present, as the time relay various ways is arranged.For example gasbag-type, gear type, transistor type etc., their common feature is a complex structure, volume is big, the cost height, the setting time scope is little, and error is big, only possesses single delay function, therefore generally is applied in industrial enterprise's electrical control.Generally the home electric appliance plug of Cai Yonging only plays socket power, does not possess delay function.

The utility model provides a kind of technology simple, consume energy low, volume is little, price is honest and clean and have delay time standard, the microcomputer controlled power supply plug of wide, available six periods of setting range.It adopts the COMOS integrated circuit, and its reference time delay was at 0.1 second～999 hours, and delay precision is 0.5%.This kind plug is the attaching plug of the general electrical equipment of conduct not only, and can selectively delay time according to the needs of different electrical equipment and switch on or outage.As civilian electric rice cooker, selected suitable time-delay conduction time before the morning working, the meal of getting home of waiting to come off duty is ripe just.And for example this plug of application such as refrigerator, television set all can reach economize on electricity.Safe and reliable, purpose easily.

The utility model comprises shell.There is a time-delay to connect indicator light in the front of plug.There is a power selection switch (not delaying time/delay time) its below, is provided with time setting fork shift switch in the left side, and there is zero live wire plug at the back side.In the inside of shell, be provided with COMOS integrated circuit, relay and some semiconductor elements.That these devices are installed in volume less than 40 * 60 * 30(is wide * high * thick) shell in.Operation principle of the present utility model is: when plug is zero, delay circuit got when firewire electrode was inserted in socket, is pulsating direct current about 100V through diode with AC rectification, after resistance, electric capacity secondary step-down filtering, export stable 12V direct voltage again, supply with integrated circuit by voltage-stabiliser tube.Pulse of integrated circuit output when treating that delay time reaches setting time; Afterwards with the controllable silicon triggering and conducting, this moment, relay got electric adhesive by the diode amplification, connected load (electrical appliance) work.

Fig. 1, Fig. 2 are external form figure of the present utility model.

Fig. 3 is a circuit design principle block diagram of the present utility model.

Fig. 4 is that element of the present utility model is installed circuit board drawing

Embodiment: referring to Fig. 1-4, the utility model zero live wire plug 5 is installed in the below of housing 1, comprise: connect indicator light 2, power selection switch 3, delayed setting fork shift switch 4, integrated package 6, relay 7 and all semiconductor elements are all fixing in the circuit board, are installed in then in the housing 1.The course of work of the present utility model is: at first power selection switch is pushed on the time-delay position, again time-delay fork shift switch is pushed on the needed gear, zero live wire plug with plug is inserted in the supply socket then, this moment, the utility model got, is that arteries and veins about 100V becomes direct current through D1 with AC rectification, again through R ₁, R ₂, C ₁, C ₂Pass through WD after the secondary step-down filtering ₁The stable 12V direct voltage of voltage stabilizing output is supplied with the IC integrated circuit.When the time reaches setting value, pulse conducting BG of pin 8 outputs of IC ₁, pass through BG ₁With the bidirectional triode thyristor triggering and conducting, this moment, relay obtained electric adhesive after triode amplified, and it often opens auxiliary contact J-2 closure, connects load R _L(electrical appliance), power connection indicator light 2 is shinny.Meanwhile relay is by often leaving auxiliary contact J-3 self-locking, and auxiliary contact J-1 disconnects, and delay circuit is out of service, makes the power consumption of this device reduce to minimum.In like manner, relay normally open auxiliary contact J-2 reconfiguration is excised the function that just can realize delay cut-off for another normally closed auxiliary contact often opening auxiliary contact J-3.If when the user does not need time-delay energising or outage, power selection switch is placed on feed-through locations gets final product.

Claims (2)

1, a kind of multi-period time-delay microcomputer controlled power supply plug, comprise shell 1, power selection switch 3, regularly select fork shift switch 4, MC4541BP integrated circuit 6, it is characterized in that the front of plug is provided with power selection switch 3, regularly fork shift switch 4, power connection indicator light 2.

2, according to claims 1 described multi-period time-delay microcomputer controlled power supply plug, it is characterized in that the power selection switch 3 on the plug is two band switches, regularly selecting fork shift switch 4 is 6 band switches.