Christmas Tree LED flashing light DIY Kit Red Green Flash Circuit LED

Description

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Description:
This circuit is composed of
16 pcs
LED (light emitting diode). The 16pcs LED divided into four groups, and each group has different flashing frequencies, when four groups flash together. This item looks like a little Christmas tree. the circuit is powered by a 9V battery.
Bright spots:
This circuit is simple and practical, low power consumption.It uses integrated circuits for driving: fewer
parts , and the line is simple and easy to understand.
External wiring kit:  with pluggable plug for easy replacement of parts at any time and conducive circuit debugging. Also allows us to deepen our understanding of the principles of the circuit in the debugging process.
This line is in the form of the oscillation circuit by the cycle generated by the following
principles
:
1, after the first charge, the capacitor C1 & C4 charging is complete.
2, capacitors C2 & C3 will continue to charge.
3, when the transistor Q1 & Q4 is turned on at the same time, it discharges the capacitor C1 & C4.
4, capacitors C2 & C3 is fully charged, the transistor Q1 & Q4 will be closure, while also charging the capacitor C1 & C4 again.
5, transistors Q2 & Q3 is turned on while the capacitor C2 & C3 will be discharged.
By analogy, the flash of speed is the oscillation frequency, and the frequency is determined by the resistor R & capacitance C values.
Suite: PCB circuit boards, battery box components. (No batteries)
Board Size: 70mm*110mm
Package Listing
:
No.
Component
Mark
Parameter
Quantity
1
Metal Film Resistor
R1,R2,R3,R4
1K
4
2
Metal Film Resistor
R5,R6
75K
2
3
Metal Film Resistor
R7,R8
100K
2
4
LED
D1,D3,D5,D7,D9,D11,D13,D15
Red 5mm
8
5
LED
D2,D4,D6,D8,D10,D12,D14,D16
Green 5mm
8
6
Electrolytic capacitor
C1,C2,C3,C4
10uF 50V
4
7
Transistors
Q1,Q2,Q3,Q4
S8050 TO-92
4
8
Connector
J1
1
9
Lock Switch
K1
1
10
9V Battery Box
1
11
PCB
1
12
Screw
M3*6
3
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Returns & Refund Policy
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Returns & Refund Policy
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wait 30 days
(US only n
eed 7-10 days)
,
Please take care it.Less than 30 days,we can't take a refund
.
If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please keep in touch with us and double check the return address before you return it.
If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.
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