DIY Flasher Running Water Kit LM555 and CD4017

SKU: D19-11
In Stock
EGP 95.000 exc. vat
In Stock

Brand:Chinese

Description

DIY LM555 + CD4017 Flasher Running Water Kit

 

Kit name: NE555+CD4017 running water kit/parts
Power supply voltage: 2.5-14.5V
PCB size: 5.4cm*2.1cm
PCB thickness: 1.6mm

Highlights

This kit is mainly composed of a clock generation circuit and a decimal counter circuit.

A self-excited multi-vibrator with NE555 as the core. The power supply charges the capacitor C1 through R2, R3, and R4.

When C1 starts to charge, the pin 2 of NE555 is still in Low level, so pin 3 of the output is high,

when the power is charged to C1 to 2/3 power supply voltage through R2, R3, R4, the level of pin 3 of the output changes from high to low,

and the internal discharge tube of NE555 is turned on , The capacitor C1 is discharged through the 7 pins of R4, R3,

NE555, until the voltage across C1 is lower than 1/3 of the power supply voltage,

the level of 3 pins of NE555 changes from low level to high level again. C1 charges again, Such a cycle forms an oscillation. 

The charging time is: 0.695(R2+R3+R4)C1, the discharging time is: 0.695(R4+R3)C1,

the output frequency of the oscillator can be controlled by adjusting R4,

the clock oscillation signal of NE555 is continuously added to the 14 feet of CD4017,

Ten LEDs are connected to the 10 output terminals of the CD4017.

When the 10 output terminals of the CD4017 alternately generate high levels under the action of the clock signal,

D1–D10 are turned on in sequence, thereby forming a running light effect.
Adjust the R4 to adjust the flow speed of the LED light.


Spare parts list

 

Component name Quantity
PCB board 1
2P bent pin 1
1UF capacitor 2
3mmLED red 10
1K resistor 10
2.2K resistor 1
10K resistor 1
50K blue and white potentiometer 1
NE555 1
CD4017 1

 

 

Additional information

Weight 0.032 kg

Brand

Chinese

Chinese
Chinese

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