CNIKESIN DIY Loving Type Heart-shaped Circulation Flashing Lamp Water Horse Race Spare Parts Kit (No battery) Электронные - купить

Купить CNIKESIN DIY Loving Type Heart-shaped Circulation Flashing Lamp Water Horse Race Spare Parts Kit (No battery) | Электронные

Working principle:

From the principle of the figure can be seen, only 18 LED were divided into 3 groups, when the power is switched on, 3transistors will be rushed to the conduction, but because the components are different, there will be only 1 transistors first

conduction, the assumption here is that the LED1 VT1 was first conducted, this group of light, because the VT1

conduction the electrode voltage drop, the capacitor C1 is decreased, close to 0V, because the voltage across the

capacitor cannot mutation, thus the VT2 base are drawn to approximate 0V, VT2 cutoff, so the collector LED2 this set

out. At this point the high voltage of the VT2 through the capacitor C2 to increase the collector voltage of the VT3,

VT3 will also be quickly turned on, LED3 this group lit. So during this time, VT1, VT3 of the collector are low, LED1

and LED3 of the

two groupswere lit, the LED2 group put out, but with the power supply through the resistance R2 of the charge of the

C1 base voltage of VT2 increased gradually, when more than 0.7V, VT2 from the state to the conduction state LED2,

the collector voltage drop, this group of light. At the same time, voltage VT2 decreased by the collector base voltage

capacitor C2 VT3 also decreased by VT3 guide changed into cutoff, the collector voltage increases, the group put out

LED3. Next, the circuit described in accordance with the cycle of the process, the 3 group of LED will be lit in turn, at

the same time there are a total of 2 groups of 12 LED was lit. These LED are arranged in a cross shaped heart-shaped

pattern, the continuous cycleof flashing light, to achieve the effect of flow visualization.

Welding and assembly of the heart cycle lamp is best suited to the use of relatively dark environment at night, more

than 2meters away from the viewing effect is more vivid and interesting.

8 5MM large LED light-emitting diode display (and is not the general use of the kind of small 3MM oh), with thickening of the quality of the battery box

Wholesale and drop shipping are both welcomed.

Usually we will declare the minimum value to avoid customs tax. But due to different policies in different countries, there might be customs tax that should be paid by buyer. So you could leave a message when placing the order about how much value you would like to declare.