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Christmas Trees LED DIY Kit Professional Red Green Flash LED Circui

Product Description

Product Description

100% brand new and high quality
Product 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.
Advantages:
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:
-after the first charge, the capacitor C1 & C4 charging is complete.
-capacitors C2 & C3 will continue to charge.
-when the transistor Q1 & Q4 is turned on at the same time, it discharges the capacitor C1 & C4.
-capacitors C2 & C3 is fully charged, the transistor Q1 & Q4 will be closure, while also charging the capacitor C1 & C4 again.
-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)
If you need the instruction, contact me, I will send you a data download link~
Board Size:70mm*110mm
 

 

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If you can't receive the product within 2 months (60 days), please contact with us,we promise to payback 100% of your money.

We ensure our products work normally before post.If the products is broken before arrival to you,all you should do is taking a photo to show us our broken product.We promise to payback 100% of your money.

 

We appreciate positive feedback . we always try our best to service every customer . If you have any question,feel freely to contact us,we are always here to offer help .
 
 
All items will be shipped within 1~2 business day after payment. by China post or Singapore post or HK post,
   
Order valus more than $25, we provide free tracking number, order value less than $25, customer need to pay $2 if need tracking number
 
Ship to address provided by ebay if no special notes from buyer .
Delivery Time: Normally, It Takes About 10-30 Business Days to Arrival for most countries.
5-14 days to USA.
10-25 days to Australia / Canada.
14-30 days to major cities in Europe .
4 - 8 weeks to Italy , Brazil ,Russia.
 
However, it may delay due to industrial strike action, severe weather, custom reasons or peak seasons
 
we specialized in international business for more than 8 years We are professional in international business.
 
We work with Reliable international post service company.we can make sure you can get your items in time
 
We package every parcel very carefully. All items will be tested before shipped.We promise you will get your items in good situation.We seek for long term .
 
Mian business
We selling items with high quality and best price .We mainly selling ICs, electronic component ,electronic modules. PCB board etc
 
We also have customer to find other items that do not selling in our store .pls contact us if you need ,we can always provide the best price.
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