CN205122051U - 555 flowing water lamp circuit for teaching with 4017 integrated circuit constitution - Google Patents

Abstract

The utility model provides a 555 flowing water lamp circuit for teaching with 4017 integrated circuit constitution, a square wave oscillation circuit is constituteed by 555 integrated circuit U1, potentiometre RV1, electric capacity C1 and C2 to this circuit, and the decimal shift counter that 4017 integrated circuit constitutes is inputed to the vibration square wave of its output, and then controls 10 street lamp light and demonstrate the circuit. The circular telegram back, 10 LED lamp D1-D10 can light in proper order in order and move in circles, form the effect of flowing water lamp. Because this circuit has the characteristics of ocular demonstration nature, make boring's verification originally test and become more interesting, attract the student to participate in the interest of experiment teaching to promote the experiment quality of instruction, let students can master better 555 with 4017 integrated circuit's application process.

Description

The teaching running lamp circuit of a kind of 555 and 4017 integrated circuit compositions

Technical field

The utility model relates to the teaching running lamp circuit of a kind of 555 and 4017 integrated circuit compositions, belongs to application electric technology field.

Background technology

In Electronic Technology Specialty course teaching, an independently oscillatory circuit experiment is done about the teaching method that 555 integrated circuit are common, and experimental result need be observed with oscillograph, because its single replication experiment circuit lacks interesting, easily cause students ' interest of study not enough, affect teaching efficiency.Therefore, be necessary that designing some has circuit that is interesting and sight concurrently, by be designed to by 555 and 4017 integrated circuit combinations can the running lamp circuit of ocular demonstration, confirmatory experiment dry as dust originally can be made to become more interesting, attract the interest of students' participation experimental teaching, thus Promoting Experimental Teaching quality, allow students can grasp the application process of 555 and 4017 integrated circuit better.

Utility model content

The purpose of this utility model is to provide the teaching running lamp circuit of a kind of 555 and 4017 integrated circuit compositions, is demonstrated the output effect of 555 integrated circuit composition oscillatory circuits by the form of running lamp.

The concrete technical scheme that the utility model is taked is as follows:

A teaching running lamp circuit for 555 and 4017 integrated circuit compositions, is characterized in that: this circuit comprises the square-wave oscillator circuit of 555 integrated circuit formations and the running lamp illustrative circuitry of 4017 integrated circuit formations.

Described square-wave oscillator circuit comprises 555 integrated circuit U1, potentiometer RV1, electric capacity C1 and C2, switch S 1, wherein access 4 pin and 8 pin of 555 integrated circuit U1 after+5V power series switch S 1, the 1 pin ground connection of 555 integrated circuit U1, ground connection after 5 pin serial capacitance C1, connects the positive pole of electric capacity C2, the minus earth of electric capacity C2 after 2 pin and 6 pin parallel connections, 3 pin of 555 integrated circuit U1 connect adjustable end and a stiff end of potentiometer RV1, and 6 pin connect another stiff end of potentiometer RV1.

Described running lamp illustrative circuitry comprises 4017 integrated circuit U2,10 resistance R1 ~ R10,10 LED D1 ~ D10, wherein 3 pin of the 14 pin input termination 555 integrated circuit U1 of 4017 integrated circuit U2,13 pin and 15 pin ground connection; 3,2,4,7,10,1,5,6,9,11 pin of 4017 integrated circuit U2 are output pin, each output pin be all connected in series a resistance again forward be connected in series ground connection after a LED, thus form 10 street lamp light illustrative circuitry.

Described 10 LED D1 ~ D10 can adopt the LED lamp bead of different colours, thus form more gorgeous demonstrating effect.

The beneficial effects of the utility model are: the teaching running lamp circuit of this 555 and 4017 integrated circuit composition produced vibration square wave by 555 integrated circuit before this, then produced running lamp effect by 4017 integrated circuit.Because this circuit has the feature of ocular demonstration, confirmatory experiment dry as dust is originally made to become more interesting, attract the interest of students' participation experimental teaching, thus Promoting Experimental Teaching quality, allow students can grasp the application process of 555 and 4017 integrated circuit better.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of the teaching running lamp circuit of this 555 and 4017 integrated circuit composition.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further.

As shown in Figure 1, the teaching running lamp circuit of this 555 and 4017 integrated circuit composition comprises the square-wave oscillator circuit of 555 integrated circuit formations and the running lamp illustrative circuitry of 4017 integrated circuit formations.

Described square-wave oscillator circuit comprises 555 integrated circuit U1, potentiometer RV1, electric capacity C1 and C2, switch S 1, wherein access 4 pin and 8 pin of 555 integrated circuit U1 after+5V power series switch S 1, the 1 pin ground connection of 555 integrated circuit U1, ground connection after 5 pin serial capacitance C1, connects the positive pole of electric capacity C2, the minus earth of electric capacity C2 after 2 pin and 6 pin parallel connections, 3 pin of 555 integrated circuit U1 connect adjustable end and a stiff end of potentiometer RV1, and 6 pin connect another stiff end of potentiometer RV1.

Described running lamp illustrative circuitry comprises 4017 integrated circuit U2,10 resistance R1 ~ R10,10 LED D1 ~ D10, wherein 3 pin of the 14 pin input termination 555 integrated circuit U1 of 4017 integrated circuit U2,13 pin and 15 pin ground connection; 3,2,4,7,10,1,5,6,9,11 pin of 4017 integrated circuit U2 are output pin, each output pin be all connected in series a resistance again forward be connected in series ground connection after a LED, thus form 10 street lamp light illustrative circuitry.

This circuit is by 555 integrated circuit U1, potentiometer RV1, and electric capacity C1 and C2 forms a square-wave oscillator circuit, in the decimal shift counter that its vibration square wave input exported form to 4017 integrated circuit, and then control 10 street lamp light illustrative circuitry.After the S1 that closes a switch is energized, 10 LED D1 ~ D10 can light successively in order and move in circles, and form the effect of running lamp.By regulator potentiometer RV1, can change the oscillation frequency of input square wave, the speed of running lamp also can change.When described 10 LED D1 ~ D10 adopt the LED lamp bead of different colours, more gorgeous demonstrating effect can be obtained.

Claims (2)

1. a teaching running lamp circuit for 555 and 4017 integrated circuit compositions, is characterized in that: this circuit comprises the square-wave oscillator circuit of 555 integrated circuit formations and the running lamp illustrative circuitry of 4017 integrated circuit formations;

Described square-wave oscillator circuit comprises 555 integrated circuit U1, potentiometer RV1, electric capacity C1 and electric capacity C2, switch S 1, wherein access 4 pin and 8 pin of 555 integrated circuit U1 after+5V power series switch S 1, the 1 pin ground connection of 555 integrated circuit U1, ground connection after 5 pin serial capacitance C1, connects the positive pole of electric capacity C2, the minus earth of electric capacity C2 after 2 pin and 6 pin parallel connections, 3 pin of 555 integrated circuit U1 connect adjustable end and a stiff end of potentiometer RV1, and 6 pin connect another stiff end of potentiometer RV1;

Described running lamp illustrative circuitry comprises 4017 integrated circuit U2,10 resistance R1 ~ R10,10 LED D1 ~ D10, wherein 3 pin of the 14 pin input termination 555 integrated circuit U1 of 4017 integrated circuit U2,13 pin and 15 pin ground connection; 3,2,4,7,10,1,5,6,9,11 pin of 4017 integrated circuit U2 are output pin, each output pin be all connected in series a resistance again forward be connected in series ground connection after a LED, thus form 10 street lamp light illustrative circuitry.

2. running lamp circuit according to claim 1, is characterized in that: described 10 LED D1 ~ D10 adopts the LED lamp bead of different colours.