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LED Christmas tree LED 9V
Product Description
Description:
This scheme consists of 16 pcs. LED (light emitting diode). 16 pieces led to the division into four groups, and each group has a different frequency of flashing frequencies, when the four groups flashed together. This item looks like a little Christmas tree. The channel is powered by a 9V battery.
Bright spots:
This circuit is simple and practical, low power consumption. It uses integrated driving circuits: less
Details, and the line is simple and easy to understand.
External wiring kit: with plated plug for easy replacement of parts at any time and stimulating debugging of the circuit. It also allows us to deepen our understanding of the principles of the system during the debugging process.
This line is in the form of an oscillatory circuit throughout the cycle generated by the following principles:
1, after the first charge, the capacitor C1 & C4 is fully charged.
2, C2 & C3 capacitors will continue to charge.
3, when transistor Q1 & Q4 is turned on at the same time, it discharges capacitor C1 & c4.
4, capacitors C2 and C3 are fully charged, transistor Q1 & Q4 will be closed, while capacitor C1 & C4 is also charged again.
5, transistors Q2 and Q3 are turned on, while capacitor C2 & C3 is discharged.
By analogy, the speed flash is the oscillation frequency, and the frequency is determined by the resistor R & capacitance with values.
Set: boards, battery components. (Without batteries)
Board size: 70 mm * 110 mm