Wobbly Windbell Fun Electronic DIY Kit Wring 83 LEDs Wind Bell LJN, US $5.28 – Picture 0

Wobbly Windbell Fun Electronic DIY Kit Wring 83 LEDs Wind Bell LJN, US $5.28 – Picture 1

Wobbly Windbell Fun Electronic Diy Kit Wring 83 Leds Wind Bell Ljn

US $5.28

China, China
Jun 9th

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Wobbly Windbell Fun Electronic DIY Kit Wring 83 LEDs Wind Bell LJN} } DESCRIPTION Wobbly Windbell Fun Electronic DIY Kit Wring 83 LEDs Wind Bell Features - Principle of Operating - For YFL-80, the Q1 and Q2 form the multivibrator which used to control the flashing of these two LEDs. 83 LEDs form the pattern of a wobbly wind bell. - And here is the operating principle of multivibrator. As there is difference between the components, Q1 or Q2 will be turn on at the first place after the boot. If Q1 turns on at the first place, the voltage of Q1 collector will be 0V and the LEDs of group A start light. As it cannot have a sudden change on the voltage of two ends of the capacitance, the Q1 collector with 0V will let the base potential of Q2 reduced to 0V through C1 and let the Q2 turn off. LEDs of group B turn off at this time. When the charge voltage of C1 increases to the breakover voltage of Q2, the Q2 turns on. And the voltage of Q2 collector reduced to 0V and LEDs of group B starts to light. In the same way, the Q2 collector with 0V will let the base potential of Q1 reduced to 0V through C2 and let the Q1 turn off. LEDs of group A turn off at this time. The multivibrator will operate according to this cycle to let these two groups of LEDs light by turns. - And the wobble frequency of these two groups of LEDs depends on the specification of C1?C2?R21 and R22. Specifications - Suite Name:Wobbly Wind Bell Suite Type:YFL-80 - Operating Voltage:5~9V Dimensions:92*89mm Package Includes - 1x Wobbly Windbell Fun Electronic DIY Kit Wring 83 LEDs Wind Bell } PAYMENT We accept PayPal only. } SHIPPING Your purchase will be shipped by airmail via China Post within 2 business days after your payment is cleared. International shipping takes time and your patience is highly appreciated. Please contact us if you have any question and we will reply to you within 1 business day. We will NOT be responsible for any delay during delivery including customs postage checking, strike, force majeure, etc. You should expect to pay duties & taxes, if there is any, charged by the government in your respective country. } RETURNS Refund or replacement request is available within 1 week after parcel is received. Please return the item as the same condition as received. Your feedback and DSRs are extremely important to us, so please kindly contact us if there is any problem, and let us know how we can earn your 5-star rating before submitting your scores! On Aug-27-15 at 03:43:23 PDT, seller added the following information:

Condition:	New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...	Country/Region of Manufacture	China
MPN	247213386747
Model	other
Brand	WHATWEARS
UPC	247213386747
EAN	6060934051008