Product name：KX2023声控韵律灯
货号：KX2023
"Size"：About long100mm*wide75mm*high15mm
Weight：about80g
Material：塑料
颜色：有机材料随机搭配
是否使with电池:是
装箱： 500pcs
Box gauge：600*450*550mm
Preface：
Today, with an increasing emphasis on children's education，Enlightenment education has gradually become an important topic pursued and explored in the field of education today。More and more teachers and parents are beginning to pay attention to cultivating children's qualities from an early age，Help children develop good character and behavioral habits from the very beginning。Parent-child interactive handicrafts can enhance the quality of parent-child companionship，Improve parent-child relationships，The time we spend with our children，No mobile phone、ipad、Television，Only joy，互动and沟通。 It can cultivate children's ability to solve problems by themselves when they encounter problems，Children should first see and experience the solution by themselves，Because this is how my parents and teachers solve problems while doing handicrafts。 It can develop children's imagination，In a child's world，Cars can fly in the sky、The sun can be green...... Play handicraftsDIY可以培养孩子的动手能力通过使with不同的工具，The child's little hands got sufficient exercise。Brush、Pigment、Scissors、Hot-melt gun、Glue.....，Dare to try any tool，It is also developing different skills to a certain extent。 A child's self-confidence lies in the process of handicrafts，Let's try every possible way together，Have experienced many failures，But it always succeeds，To a certain extent, it enhanced his self-confidence。 Cultivate children's concentration when they are exploring various tools and handicrafts，He is very focused，If there is no external disturbance，He can keep exploring。
Experimental purpose： 1、Understand and recognize acousto-electrical conversion devices-Standing microphone
2、Understand the three-tube amplification circuit
3、Identification of color ring resistors
4、The numbering rules of electronic components in the schematic diagram
原理应with：通过Standing microphoneConvert the sound signalFor electrical signals，After passing through three pipesQ1The co-emission amplification circuit composed，After magnification，Drive three tubesQ2andLEDWorking resistanceR1的作with是给驻体话简提供直流工作电压，Changing its size can alter the sensitivity，CapacitorC1的作with是将话筒的信号耦合到后端，At the same time, block the DC voltage，Impact on the back-end circuit。ResistanceR2, R3They are respectively three tubesQ1The base，And the bias resistor of the collector，Provide it with working voltage。因其输入and输出共with发射The base，It is called a co-emission amplifier circuit。Distinguish whether the three-tube is an amplifier or a switch，It just depends on whether there is a bias resistor。
Experimental cognition：Standing microphone，Convert the sound signal
For electrical signals。Belongs to the sound sensor。
Knowledge expansion：Standing microphone:Commonly known as "microphone head"，Mobile phone，It's all used in the microphone
Knowledge extension：Three-tube amplification circuit:The three tubes have an amplifying effect，If the magnification speed isn，When kib有电流
流时，In the collection of electricitycWill be producednA current that doubles the basis。
Component number:When there are many similar components in the circuit，It is about to be numbered.，Convenient for identification，Resistance
withRComposed of numbers，Such asR1, R2, R3;Capacitorwith字母C"Indicate，Two-in-one use lettersD"Indicate，三管with字母Q"Indicate，You can also number it yourself。
Warning：
All the accessories in this product are student experimental production equipment，Please ensure safety under the supervision and guidance of teachers and parents 全下使with！所有产品禁止食with！Not suitable for children under three years old，Do not press near the fire source。Such as果with到 Please check whether the circuit is unobstructed before assembling the battery、Whether the accessories on the circuit are complete，Whether each contact is good or not good，On the battery+"Positive"、-Negative，组装过程中注意Such as果with到Glue不要弄到眼睛and皮肤上。
