Price: $5.99
(as of Jun 02,2023 20:09:49 UTC – Details)
💎【Ten-Way Running Water lamp】:10 LEDs are lit in sequence
⚡【Supply voltage】: 6V (DC power supply)
🎯【Circuit principle and introduction of key components】:
🎯【1】:This kit is mainly composed of a clock generation circuit and a decimal counter circuit. The NE555 time base circuit constitutes an oscillation circuit. The power supply charges the capacitor C1 through the resistors R2, R3 and R4. 2. After the voltage of pin 6 rises to 2/3VCC, the output of pin 3 is low level, and pin 7 is in a low resistance state to the ground.
🎯【2】:Capacitor C1 is discharged to ground through the potentiometer and pin 7. When the voltage of pins 2 and 6 is lower than 1/3 VCC, the output of pin 3 is high level, pin 7 is in a high resistance state to ground, and VCC starts again through RP1 The capacitor C1 is charged, and the cycle starts over and over again.
🎯【3】:By adjusting the resistance value of RP1, the time constant of the charging and discharging of the capacitor can be changed, thereby changing the frequency of the output pulse of pin 3.
🎯【4】:The oscillating pulse is output from pin 3 as the clock pulse of the CD4017. Under the action of the clock pulse, the CD4017 decimal counter starts to count, and the 10 output terminals output high level in turn, and continue to cycle.
🍀【DIY Soldering Kit】: It is widely used in schools to help students learn basic mechanical and electronic skills.There are many life scenarios for this circuit application, and it is a kind of circuit that circuit designers need to master.
🍀【Easy Assembly】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. Even beginners can easily solder successfully.
📞【Wholesale business】:We have been engaged in the wholesale and retail business of electronic related products for a long time. Welcome letter to discuss wholesale business. The larger the amount, the better the price.
⚡【Supply voltage】: 6V (DC power supply)
🎯【Circuit principle and introduction of key components】:
🎯【1】:This kit is mainly composed of a clock generation circuit and a decimal counter circuit. The NE555 time base circuit constitutes an oscillation circuit. The power supply charges the capacitor C1 through the resistors R2, R3 and R4. 2. After the voltage of pin 6 rises to 2/3VCC, the output of pin 3 is low level, and pin 7 is in a low resistance state to the ground.
🎯【2】:Capacitor C1 is discharged to ground through the potentiometer and pin 7. When the voltage of pins 2 and 6 is lower than 1/3 VCC, the output of pin 3 is high level, pin 7 is in a high resistance state to ground, and VCC starts again through RP1 The capacitor C1 is charged, and the cycle starts over and over again.
🎯【3】:By adjusting the resistance value of RP1, the time constant of the charging and discharging of the capacitor can be changed, thereby changing the frequency of the output pulse of pin 3.
🎯【4】:The oscillating pulse is output from pin 3 as the clock pulse of the CD4017. Under the action of the clock pulse, the CD4017 decimal counter starts to count, and the 10 output terminals output high level in turn, and continue to cycle.
