CN201937562U

CN201937562U - Ultra-long timing controller manufactured by time-base circuit

Info

Publication number: CN201937562U
Application number: CN2010206217368U
Authority: CN
Inventors: 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-23
Filing date: 2010-11-23
Publication date: 2011-08-17
Anticipated expiration: 2020-11-23

Abstract

The utility model belongs to the technical field of electronic control, and relates to an ultra-long timing controller manufactured by a time-base circuit, which comprises a capacitor charging circuit, a timing circuit, a control and alarm circuit, a working status indication circuit, a power supply filter circuit and a direct current (DC) power supply. The utility model is characterized in that: the circuit of the controller also comprises a timing capacitor fast charging and transistor slow discharging circuit. In the ultra-long timing controller, the problems that the delay time of the timing circuit designed by the time-base circuit does not easily exceed 50 minutes, and the requirement of the leakage index of a timing capacitor is extremely high, otherwise the delay time of the circuit can be substantially shortened. In a monostable circuit formed by the time-base circuit, the ideal effect of ultra-long time delay can be achieved by using a common timing capacitor and a small-value potentiometer (resistor) and only adding two components.

Description

The overlength timing controller of time spent base circuit production

Technical field

The utility model belongs to the electron controls technology field, relates to a kind of overlength timing controller of time spent base circuit production.

Background technology

Time-base circuit is having purposes very widely aspect the automatic control of time-delay, but all the time, it is the bottleneck that is difficult to break through that time-base circuit is made circuit design and the manufacturing technology of time-delay above 50 minutes.In order to guarantee the reliability and the accuracy of time spent base circuit production delay circuit, time spent base circuit design making delay circuit delay time majority was controlled at below 40 minutes usually.This has just limited to the scope of application of time-base circuit greatly.

In order effectively to solve the technical barrier of not breaking through the time-base circuit ultra-delay for a long time all the time, on the basis that does not change most time spent base circuit production time-delay typical circuits, the utility model only increases by two common components in typical delay circuit, promptly realized the target of the ultra-delay circuit of time spent base circuit production.

Below describe the correlation technique of the overlength timing controller making of this time spent base circuit production in detail.

The utility model content

Goal of the invention and beneficial effect: the utility model has thoroughly solved the timing circuit of time spent with basic circuit design, the circuit delay time is difficult to surpass 50 minutes the fact, and high to timing capacitor electric leakage index request, otherwise the delay time of circuit will significantly shorten.The monostable circuit that the utility model time spent base circuit is formed is used the electrochemical capacitor of common low capacity and the potentiometer of little resistance (resistance), and is only increased by two common components, has realized the good result of ultra-long time time-delay.

Whole components and parts of the overlength timing controller of time spent base circuit production can all be packed in the magazine of 86 profile plates, make it to become the standard module that the electrician uses and carry out batch exploitation.

Technical characterictic: the overlength timing controller of time spent base circuit production, form by capacitor charging circuit, timing circuit, control and warning circuit, operating state indicating circuit, electric source filter circuit, DC power supply, it is characterized in that in the circuit of controller, comprising: the slow discharge circuit of timing capacitor quick charge and transistor.

The annexation that the composition of other partial circuits and components and parts thereof are mutual

1. in bistable circuit, the slow discharge circuit of timing capacitor quick charge and silicon transistor is by key switch (SB), the 1st electric capacity (C1), NPN transistor (T), the 1st resistance (R1), potentiometer (RP1) and time-base circuit NE555 (IC1) form, one end of key switch (SB) connects the base stage of NPN transistor (T) respectively, the positive pole of the 1st electric capacity (C1), the collector electrode of the other end of key switch (SB) and transistor (T), the positive pole of power supply (VCC) links to each other, the emitter of NPN transistor (T) respectively with 2 pin and 6 pin of time-base circuit NE555 (IC1), one end of the 1st resistance (R1) links to each other, one end of another termination potentiometer (RP1) of the 1st resistance (R1), the lever arm connection circuit ground (GND) of the other end of potentiometer (RP1) and potentiometer (RP1), 4 pin of time-base circuit NE555 (IC1) and 8 pin connect positive source (VCC), the 1 pin connection circuit ground (GND) of time-base circuit NE555 (IC1), 5 pin of time-base circuit NE555 (IC1) connect an end of the 2nd electric capacity (C2), the other end connection circuit ground (GND) of the 2nd electric capacity (C2).

2. 3 pin of the time-base circuit NE555 (IC1) in control and the warning circuit connect an end of direct current relay (J) coil, the positive pole of protection diode D1 and an end of the 4th resistance (R4) respectively; the positive pole of another termination buzzer (Y) of the 4th resistance (R4); the negative pole connection circuit ground (GND) of buzzer (Y), the negative pole of the other end of direct current relay (J) coil, protection diode D1 links to each other with the positive pole (VCC) of power supply.

3. the operating state indicating circuit is made up of dropping resistor R2 and LED 1, dropping resistor R3 and LED 2, the negative pole of the 3 pin difference sending and receiving optical diode LED1 of time-base circuit NE555 (IC1) and the positive pole of LED 2, connect the positive pole (VCC) of power supply behind the positive pole serial connection dropping resistor R2 of LED 1, connection circuit ground (GND) behind the negative pole serial connection dropping resistor R3 of LED 2.

Operation principle

The overlength timing controller of time spent base circuit production, in fact its core is a monostable circuit, operation principle is:

In fact the core circuit of the overlength timing controller of time spent base circuit production is a monostable circuit, its operation principle is: click key switch (SB), the 12V direct voltage adds to the two ends of timing capacitor C1, timing capacitor C1 is charged to 12V rapidly, at this moment the base stage of NPN transistor (T) has offset operation voltage, make NPN transistor (T) conducting, and then to make 2 pin of time-base circuit NE555 (IC1) and 6 pin be high level, then output 3 pin of time-base circuit NE555 (IC1) are low level, thereby the coil of relay (J) gets electric work, at this moment its normally opened contact (J-1) adhesive is started working by the electrical equipment of normally opened contact (J-1) control.Also can be according to the electricity consumption needs of Be Controlled object, and use the normally-closed contact of relay (J) instead.

Along with the voltage on the timing capacitor C1 descends rallentando, (T) is non-linear element because of NPN transistor, 2 pin of time-base circuit NE555 (IC1) and the voltage of 6 pin will descend gradually, when 2 pin of basic at that time circuit NE555 (IC1) and the voltage of 6 pin drop to 2/3 supply voltage, output 3 pin of time-base circuit NE555 (IC1) are high level by the low level upset, at this moment the coil of relay (J) is not worked dead electricity, then relay (J) normally opened contact (J-1) discharges, and is at this moment quit work by the electrical appliance of normally opened contact (J-1) control.

Description of drawings

1. accompanying drawing is the overlength timing controller circuit working schematic diagram of time spent base circuit production.

2. IC1 is the time-base circuit integrated circuit in the accompanying drawing, and model is: NE555.

3. time-base integrated circuit NE555 (IC1) is 8 pin DIP encapsulation, and each pin function: 1 pin is circuit ground (GND); 2 pin are trigger end; 3 pin are output; 4 pin are reset terminal; 5 pin are control voltage; 6 pin are thresholding (threshold value); 7 pin are discharge end; 8 pin are positive source (VCC).

4. direct current relay (J) has 5 pin, and wherein: the coil of relay (J) has 2 pin, and power output has 3 pin, and 3 pin are formed normally opened contact and normally-closed contact respectively, and the J-1 in the accompanying drawing is the normally opened contact of relay (J).

Embodiment

Specification requirement according to the schematic diagram of circuit working shown in the accompanying drawing and description of drawings and the following stated is implemented, and can realize the utility model.

The selection of components and parts and technical parameter thereof

Push-button switch AN can select the K-18 type for use; Electrochemical capacitor C1 is a timing capacitor, and capacity is 1000～2200 μ F/25V, requires self leakage current the smaller the better; C2 is an electric capacity of the dacron, and capacity is 0.01 μ F; Electrochemical capacitor C3 is a power filtering capacitor, and capacity is 1000 μ F/25V; T is a NPN transistor, model 2SC9014, and the β value requires 〉=220; Resistance R 1 resistance 2.2K Ω; RP1 is a linear potentiometer, and resistance is 50～220K Ω; The resistance of dropping resistor R2, R3 is 910 Ω; LED1 is a red light emitting diodes, and LED2 is a green LED; Direct current relay (J) model is JQX-13F-12V; Y is 9V buzzer (including electronic circuit).

The timing of circuit is determined by the value of electrochemical capacitor C1, potentiometer RP1 and resistance R 1, the time needs that timing is closed or timing is opened according to electrical appliance, the capacity of electrochemical capacitor C1 can be selected in 1000 μ F to 2200 μ F scopes, and the maximum of potentiometer RP1 is 220K Ω.

Make main points and circuit debugging

According to the components and parts connection on the overlength timing controller circuit theory diagrams of time spent base circuit production in the accompanying drawing, be 1000 μ F/25V if select the capacity of timing capacitor C1, and the resistance of resistance R 1 and linear potentiometer RP1 is when being 2.2K Ω, circuit delay is 8 minutes; When the resistance of resistance R 1 and linear potentiometer RP1 was 22K Ω, time-delay was about 100 minutes; When the resistance of resistance R 1 and linear potentiometer RP1 was 52K Ω, circuit delay was 200 minutes; When the resistance of resistance R 1 and linear potentiometer RP1 is 222K Ω, when the capacity of electrochemical capacitor C1 was 2200 μ F, circuit delay was about 48 hours.

If when needing the more powerful electrical appliance of control, can between circuit a end and positive source (VCC), use more powerful direct current relay instead.

Claims

1. the overlength timing controller of time spent base circuit production is made up of timing capacitor quick charge and the slow discharge circuit of transistor, timing circuit, control and warning circuit, operating state indicating circuit, electric source filter circuit, DC power supply, and its feature comprises:

The slow discharge circuit of timing capacitor quick charge and silicon transistor is by key switch (SB), the 1st electric capacity (C1), NPN transistor (T), the 1st resistance (R1), potentiometer (RP1) and time-base circuit NE555 (IC1) form, one end of key switch (SB) connects the base stage of NPN transistor (T) respectively, the positive pole of the 1st electric capacity (C1), the collector electrode of the other end of key switch (SB) and transistor (T), positive source (VCC) links to each other, the emitter of NPN transistor (T) respectively with 2 pin and 6 pin of time-base circuit NE555 (IC1), one end of the 1st resistance (R1) links to each other, one end of another termination potentiometer (RP1) of the 1st resistance (R1), the lever arm connection circuit ground (GND) of the other end of potentiometer (RP1) and potentiometer (RP1), 4 pin of time-base circuit NE555 (IC1) and 8 pin connect positive source (VCC), the 1 pin connection circuit ground (GND) of time-base circuit NE555 (IC1), 5 pin of time-base circuit NE555 (IC1) connect an end of the 2nd electric capacity (C2), the other end connection circuit ground (GND) of the 2nd electric capacity (C2).

3 pin of time-base circuit NE555 (IC1) in control and the warning circuit connect an end of direct current relay (J) coil, the positive pole of silicon diode (D1) and an end of the 4th resistance (R4) respectively, the positive pole of another termination buzzer (Y) of the 4th resistance (R4), the negative pole connection circuit ground (GND) of buzzer (Y), the other end of direct current relay (J) coil, the negative pole of silicon diode (D1) link to each other with positive source (VCC).

2. the overlength timing controller of time spent base circuit production according to claim 1, the operating state indicating circuit is by the 2nd resistance (R2) and the 1st light-emitting diode (LED1), the 3rd resistance (R3) is formed with the 2nd light-emitting diode (LED2), it is characterized in that: 3 pin of time-base circuit NE555 (IC1) connect the negative pole of the 1st light-emitting diode (LED1) and the positive pole of the 2nd light-emitting diode (LED2) respectively, the positive pole of the 1st light-emitting diode (LED1) connects positive source (VCC) after being connected in series the 2nd resistance (R2), and the negative pole of the 2nd light-emitting diode (LED2) is connected in series connection circuit ground (GND), the 3rd resistance (R3) back.