Electronic DIY Production Suite BEST US Circuit Diy Kit Parts For Arduino, US $1.19 – Picture 0

Electronic DIY Production Suite BEST US Circuit Diy Kit Parts For Arduino, US $1.19 – Picture 1

Electronic DIY Production Suite BEST US Circuit Diy Kit Parts For Arduino, US $1.19 – Picture 2

Electronic Diy Production Suite Best Us Circuit Diy Kit Parts For Arduino

US $1.19

China, China
Jan 31st

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Electronic DIY Production Suite Description Description: Operating voltage: 3-9V LED color: bright red PCB Size: 31 * 28mm Simple flash circuit kits / parts circuit board using 1.2MM thick FR-4 boards, pads have done HASL process, welding easier and joints more beautiful! Particularly suitable for beginners electronic friend making. Principle of Operation 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. Package listing: 1 PCS Electronic DIY Production Suite / Easy Flash Circuit Diy Kit Parts For Arduino Payment 1.We accept Paypal only. 2.Please confirm your ebay shipping address is exact after payment. 3.If your purchased is more than £30.00, please offer your phone number with shipping address. Delivery details 1.All item will be shipped by Airmail post within 1 business days. It takes approximately 15-25 days (USA ,CA,AU,UK,DE).other country 15-35 days. 2.Express by EMS ,it must add 25 USD shipping fee, it takes 5-10 workdays for delivery.If you need other Epxress(DHL,Fedex.UPS etc.),please contact us to talk about shipping fee. 3.Once you purchase, please DONOT leave negative, neutral feedback or open any case if you have not received item in 30 days, because we have mentioned the shipping time repeatedly. Contact us ???? 2 1.We offer retail and wholesale services. We can provide products in accordance with your requirements. If you have any questions or something to consult, please send us ebay message. 2.All messages will be answered within 1 business day. If you do not receive our reply, please kindly re-sent your message and we will reply to you as soon as possible. 3.Our aim is to provide Top Level Customer Service, Business hours are 9am to 6pm Beijing time (+8 GMT), Monday to Friday. Engineered for professional eBay sellers!