2 pieces LED running light water flowing light module NE555 + CD4017 LED chaser
2 pieces LED running light water flowing light module NE555 + CD4017 LED chaser
Product Features
- 10 LEDs: Ten LEDs are connected to the 10 outputs of the CD4017. When the 10 outputs of the CD4017 generate a high level alternately under the action of the clock signal, D1 - D10 light up one after the other to create a water light effect.
- Working principle: the charging time is: 0.695 (R2 + R3 + R4) C1, the discharge time is: 0.695 (R4 + R3) C1, the R4 can be adjusted to control the output frequency of the oscillator and the clock oscillation. The signal of NE555 is continuously adjusted to 1 4. Pin added from CD4017.
- Adjustable speed: adjust the R4 to adjust the flow speed of the LED light.
- Durable: consists mainly of a clock generation circuit and a decimal counter circuit consists of a high-quality electronic component and has a long service life.
- NE555 core: The self-excited multivibrator with NE555 as the core charges the capacitor C1 via R2, R3, R4. When C1 starts charging, the 2-pin of the NE555 is still at a low level, so that the output pin 3 is at a high level. When the power supply is above R2, R3 and R3 4 is charged to the supply voltage of 2/3, the level of output pin 3 changes from high to low and the internal discharge tube of the NE555 is switched on.