DC 3-9V DIY Electronic Flashing Light Kit 5MM LED Flash Light Welding Board

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eBay Product Description DC 3-9V DIY Electronic Flashing Light Kit 5MM LED Flash Light LED Blinking Flip Flop Suite Welding Circuit Board Practice Kit Specifications: Suite Name: Flashing/Blinking Light Suite Type: YSG-1 Operating Voltage: 3~9V Dimensions: 30*28mm Operation Principle There will be a slight difference between the gain (the ability to amplify) of the two transistors, Q1 and Q2 and one of them will turn on faster to start the circuit flashing. If Q1 turns on first, the voltage on the collector will be very near to 0v and D1 will illuminate. At the same time the positive lead of C1 will be at about 0v and the negative lead will also be about 0v. This will put 0v on the base of Q2 and Q2 will be turned off. This means LED D2 will not be illuminated. C1 will gradually charge (in the opposite direction to its polarity) via 10k resistor R2 and when the base of Q2 see a voltage of about 0.65v, it will start to turn ON. This will reduce the voltage on the collector of Q2 and make the positive lead of C2 drop. This will cause the negative lead of C2 to drop also and reduce the voltage on the base of Q1. This will start to turn off Q1 and the voltage on the collector will rise. This will further increase the voltage on the base of Q2 and it will turn on more. This action is called REGENERATIVE ACTION as one transistor will turn off and cause the other to turn on. This occurs very quickly and the two transistors swap states. This means the second LED illuminates and the first LED is not illuminated. The flashing frequency depends on the value of C1, C2, R2 and R3. Note: 1.Due to the light and screen difference, the item’s color may be slightly different from the pictures. 2.Please allow 1-3cm differences due to manual measurement. Package Includes: 1Setx Electronic Flashing Light Kit About Us Payment Shipping Terms Contact Us Welcome to our store! We are a professional worldwide wholesale company, with our own factory located in China. We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet. We accept PayPal only. Payment must be received in 7 business days of auction closing. Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order. Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched. Item will be shipped out within 48 hours upon receipt of your payment. The shipping time details, please read the shipping and delivery together with the price. We ship to your PayPal address. Please make sure your PayPal address is correct before you pay. Considering the cost of business and easy shipping, usually the item is packed in retail packaging. Country Shipping Time Working Days + Saturday + Sunday 5-7 8-15 16-20 21-25 26-30 >31 United States Rate(item arrived) 5.1% 50.1% 29.6% 10.5% 4.7% Refund United Kingdom Rate(item arrived) 9.9% 63.2% 19.1% 3.4% 4.4% Refund Australia Rate(item arrived) 21.4% 50.0% 14.3% 7.2% 7.1% Refund France Rate(item arrived) 10.5% 28.6% 43.8% 10.1% 7.0% Refund Germany Rate(item arrived) 11.1% 22.2% 30.3% 20.9% 15.5% Refund Canada Rate(item arrived) 0.0% 47.1% 31.4% 17.6% 3.9% Refund Spain Rate(item arrived) 3.7% 24.1% 48.2% 13.8% 10.2% Refund If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning. We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately. If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends). Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem. Please DON’T leave negative or neutral feedback if you haven’t received item in 30 days, because we have mentioned the shipping time repeatedly. About Us Welcome to our store! We are a professional worldwide wholesale company, with our own factory located in China. We supply many products including video game, health & beauty, phone accessories, computers accessories, camera & camcorder,car accessories, Clothing accessories, games, toys & hobbies, jewelry, antique & craftwork. High product quality,reasonable prices, excellent customer service and a reliable credit standing is our tenet. Payment We accept PayPal only. Payment must be received in 7 business days of auction closing. Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order. Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched. Shipping Item will be shipped out within 48 hours upon receipt of your payment. The shipping time details, please read the shipping and delivery together with the price. We ship to your PayPal address. Please make sure your PayPal address is correct before you pay. Considering the cost of business and easy shipping, usually the item is packed in retail packaging. Country Shipping Time Working Days + Saturday + Sunday 5-7 8-15 16-20 21-25 26-30 >31 United States Rate(item arrived) 5.1% 50.1% 29.6% 10.5% 4.7% Refund United Kingdom Rate(item arrived) 9.9% 63.2% 19.1% 3.4% 4.4% Refund Australia Rate(item arrived) 21.4% 50.0% 14.3% 7.2% 7.1% Refund France Rate(item arrived) 10.5% 28.6% 43.8% 10.1% 7.0% Refund Germany Rate(item arrived) 11.1% 22.2% 30.3% 20.9% 15.5% Refund Canada Rate(item arrived) 0.0% 47.1% 31.4% 17.6% 3.9% Refund Spain Rate(item arrived) 3.7% 24.1% 48.2% 13.8% 10.2% Refund Terms If this item is defective upon receipt, customer has up to 14 days from date of receipt for exchange of a new one.But buyers should be pay for the shipping charge for returning. We care about our valued customers, and are always willing to work things out. If you have any problems, please e-mail us immediately. Contact Us If you have any questions, please feel free to send eBay message to us, our service specialists 24 Hours a Day, 7 Days a Week (maybe there is some delay in weekends). Our aim is to provide Top Level Customer Service, normally so we will try our best to solve any problem. 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