CN2148440Y

CN2148440Y - Power supply timer

Info

Publication number: CN2148440Y
Application number: CN 92244604
Authority: CN
Inventors: 章大
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-15
Filing date: 1992-12-15
Publication date: 1993-12-01
Anticipated expiration: 2002-12-15

Abstract

The utility model relates to a power supply time controlled device, mainly comprising a shell, a time arranged switch and a time control unit. The utility model is characterized in that the time arranged switch is a barrier shifting switch, one or more than one barrier shifting switches can be arranged according to the arranged range of time, and each barrier contact point of the barrier shifting switches is corresponding to a resistor component in an RC oscillator in the time control unit. A selective switch of timing open and timing close states and a zero clearing start button are also arranged on the shell. A power supply can be timed to be switched off by a power supply timer, and the power supply can also be timed to be switched on. The utility model can be extensively used for the timing control of electric appliances, and positive functions can be especially generated to the timing control of household electric appliances.

Description

Power supply timer

The utility model relates to a kind of power control, particularly a kind of power supply timing controller that is used for household electrical appliance.

Chinese patent CN2087399u has announced a kind of Timer with microprocessor, it is mainly by voltage regulation unit, timing unit, output control unit and housing are formed, its timing unit is mainly by starting button, time set button and IC integrated package are formed, it can only be to count pulse number by button that but its time of this timing unit is set, and with the 2 form setting-up times that to be the truth of a matter increase by exponential quantity, can't be by arbitrarily a certain hour or timesharing are set, be that scope has regularly been brought restriction to time control like this, and this Timer with microprocessor can only play the effect of cutting off the electricity supply after the time that is provided with arrives, decide switch power supply and can not set in advance, therefore the needs that can't meet the demands and timing power supply is set arbitrarily or regularly cut off the power supply.

The purpose of this utility model is to provide a kind of can be arbitrarily the setting by timesharing regularly to open or the Power supply timer of timing cutting power for the deficiency that solves above-mentioned technology.

In order to achieve the above object, the designed Power supply timer of the utility model comprises that housing, power supply input pin, power output socket hole, time are provided with the time control circuit in switch and the housing, wherein time control circuit comprises rectifying and voltage-stabilizing source, timing unit and power supply output control unit, timing unit is made up of time setting unit and frequency division counter unit, and:

Resistor component and capacitor that a, time setting unit are provided with switch by the band time are formed the RC oscillating circuit;

B, frequency division counter unit are made up of ic chip, reset button, state selecting switch and resistor;

The pin IC of c, ic chip ₁, IC ₂Respectively with the RC oscillating circuit in resistor component one end link to each other with capacitor one end; After linking to each other, passes through the other end of resistor component and capacitor an oscillation resistance device and IC again ₃Pin links to each other; Pin IC ₅, IC ₆, IC ₇Link to each other with the low level output in rectifying and voltage-stabilizing source; Pin IC ₄, IC ₁₂, IC ₁₃, IC ₁₄Link to each other by the high level output of a high level current-limiting resistance, and link to each other by the low level output of a reset button with the input power unit with the input power unit; Pin IC ₈Link to each other with control end in the output control unit by a divider resistance; Pin IC ₁₀By its corresponding dropping resistor and pin IC ₉Link to each other, link to each other with the high and low level output end in rectifying and voltage-stabilizing source by state selecting switch again.

For the time can accurately be set, and the resistor of employing minimum number, the designed time is provided with switch and can be made up of one or many fork shift switches, simultaneously the resistor component in the RC oscillator is divided into one or more groups, and be connected with the fork shift switch respectively, make each gear of fork shift switch put the resistance of establishing a capital one group of respective resistance values in the corresponding RC of input of the energy oscillator really, to form different frequencies of oscillation, with the accurate timing control of each time in reaching on a large scale.

In addition, the time is provided with on the housing that switch is located at Power supply timer, and also is provided with state selecting switch and reset button on housing, state selecting switch be used for regularly opening power supply or regularly the state of powered-down select; Reset button is used for time restarting after being provided with.

The Power supply timer that the utility model is designed, switch, Ding Kaiding off status selector switch can be set by the time set on the housing be set the time arbitrarily with control on/off state, and owing to adopting the fork shift switch that the time is set and the time that is provided with being counted control, so the resulting Power supply timer of the utility model can reach the purpose of accurate timing control with the control circuit that the frequency division integrated package is formed.This Power supply timer has certain realistic meaning for the power supply control of employed household electrical appliance in each family.

Fig. 1 is the Power supply timer structure chart;

Fig. 2 forms block diagram for time control circuit;

Fig. 3 is embodiment 1 a time control circuit schematic diagram;

Fig. 4 is embodiment 2 time control circuit schematic diagrams.

The utility model is further described by embodiment below in conjunction with accompanying drawing.

As shown in Figure 1, the described Power supply timer of present embodiment comprises housing 1, power supply input pin 2, power output socket hole 3, time is provided with switch 4,5,6 and housing 1 in time control circuit 7, also be provided with reset button 8 on the housing 1, Ding Kaiding off status selector switch 9 and power supply indicator 10, as Fig. 2, time control circuit shown in Figure 3 is by rectifying and voltage-stabilizing source 701, timing unit 702 and power supply output control unit 703 are formed, timing unit 702 comprises time setting unit 7021 and frequency division counter unit 7022, time is provided with switch and is divided into three fork shift switches in time setting unit 7021, wherein, switch 4 is used for a hour level setting, and switch 5 is used for the setting of timesharing level, switch 6 switching that the scope time is provided with that is used to have high input, resistor component also is divided into three groups, wherein resistance R simultaneously ₇And R _WSeries connection back links to each other with the two ends of switch 6, wherein an end again with the pin IC of ic chip ₁Link to each other, the intermediate ends of switch 6 links to each other with a side of switch 4, in addition two groups of resistor R ₈-R ₁₂And R ₁₃-R ₁₇Series connection, and two pins of each resistor separately is connected with each grade contact of 5 with fork shift switch 4 all respectively.And after 4,5 and two groups of resistors of two fork shift switches form and are connected in series again with capacitor C ₄And resistor R ₆Connect capacitor C ₄And resistor R ₆The other end respectively with the pin IC of ic chip ₂, IC ₃Join, make ic chip obtain the frequency signal that to adjust its frequency of oscillation to form a RC oscillation circuit.

In frequency division counter unit 7022, the pin IC of ic chip ₄, IC ₁₂, IC ₁₃And IC ₁₄Pass through high level current-limiting resistor R behind the short circuit on the one hand ₂Link to each other with the high level output in rectifying and voltage-stabilizing source 701, link to each other with low level end by reset button 8 on the other hand.The pin IC of ic chip ₅, IC ₆, IC ₇Link to each other with the low level output in rectifying and voltage-stabilizing source 701 behind the short circuit.In addition, pin IC ₁₀Pass through resistor R ₃With pin IC ₉End and connect after link to each other with the intermediate ends of single-pole double throw formula state selecting switch 9 again, the two side ends of switch 9 links to each other with the high and low level output end of importing power unit 701 respectively.

Ic chip is counted according to set frequency of oscillation, arrives after the set time at pin IC ₈High level of last output or low level utilize this high or low level to control the power supply output control unit of back, and in the present embodiment, power supply output control unit 703 is mainly by triode BG, relay J, divider resistance R ₄With diode D ₅Form, the base stage of triode BG is by divider resistance R ₄Pin IC with ic chip ₈Connect diode D ₅With the emission collection that seals in triode BG after relay J is in parallel, in the relay often open or normally closed interlock J-1 seals in the out-put supply circuit, with the output of control power supply whether.In the present embodiment, described ic chip can be selected the integrated package of two divided-frequency computing series integrated circuit, as the CD4541 integrated package in the CMOS timer application-specific integrated circuit (ASIC).

Embodiment 2:

When its time control range of the timer of selecting for use, require when little, its time is provided with switch and can selects a fork shift switch 4 for use, as shown in Figure 4, each resistance R in the resistor component ₈-R ₁₃Two ends be connected with each grade contact of fork shift switch 4 respectively, put the resistance can both corresponding input determined in the RC oscillating circuit with each gear that finally reaches fork shift switch 4, to form definite frequency, reach the control different time purpose be set.And in the present embodiment, its power supply output control unit also can adopt transistor switching circuit to realize, as shown in Figure 4, output control unit is mainly by dropping resistor R ₄, bidirectional triode thyristor CT forms, and in addition, is close to the road resistance R ₅With bypass condenser C ₅In parallel with bidirectional triode thyristor CT again after the series connection, in the timing unit as the pin IC in the integrated circuit (IC) of control output end ₈By dropping resistor R ₄Extremely link to each other with the control of bidirectional triode thyristor with LED, as pin IC ₈During the output high level, pass through resistance R ₄Step-down make the control utmost point of bidirectional triode thyristor obtain a trigger voltage, thereby the conducting bidirectional triode thyristor makes the power output socket of series connection with it can export required voltage, otherwise, as pin IC ₈Bidirectional triode thyristor cuts off out-put supply during output low level.Finally to reach the purpose of control out-put supply.

When the designed Power supply timer of the utility model uses, need at first to determine regularly conducting or timing cutting power, then with 9 groups of state selecting switch on the housing 1 in Ding Kai or Ding Guan position, carry out a hour level, timesharing level or the setting of time on a large scale by the time of 4,5,6 scales of fork shift switch again, can click reset button 8 at last again picks up counting Power supply timer, also be that inner ic chip enters time status, after timing finishes, the pin IC of ic chip ₈Export a level signal, to control the defeated control unit conducting of power supply or to cut off the electricity supply.

Claims

1, a kind of Power supply timer, it comprises that housing, power supply input pin, power output socket hole, time are provided with the time control circuit in switch and the housing, wherein time control circuit comprises the rectifying and voltage-stabilizing source, timing unit and power supply output control unit, it is characterized in that described timing unit is made up of time setting unit and frequency division counter unit, wherein:

The pin IC of c, ic chip ₁, IC ₂Respectively with the RC oscillating circuit in resistor component one end link to each other with capacitor one end, resistor component links to each other with the other end of capacitor, and again by oscillation resistance device and IC ₃Pin links to each other, and the two ends of each resistance in the resistor component are connected pin IC with each grade contact that the time is provided with in the switch respectively ₅, IC ₆, IC ₇Link to each other with the low level output in rectifying and voltage-stabilizing source; Pin IC ₄, IC ₁₂, IC ₁₃, IC ₁₄Link to each other with the high level output in rectifying and voltage-stabilizing source by a high level current-limiting resistance, and link to each other with the low level input in rectifying and voltage-stabilizing source by a reset button; Pin IC ₈Link to each other pin IC by a divider resistance with control end in the power supply output control unit ₁₀By its corresponding dropping resistor and pin IC ₉Link to each other, link to each other with the high and low level output end in rectifying and voltage-stabilizing source by state selecting switch again.

2, Power supply timer according to claim 1 is characterized in that the described time is provided with switch and is made up of one or many fork shift switches, and the resistor component in the RC oscillator is corresponding is divided into one or more groups, and is connected with the fork shift switch respectively.

3, Power supply timer according to claim 1 and 2 is characterized in that described state selecting switch, reset button and time are provided with switch and all are arranged on the housing.