Product name: KX1929 homemade 7 color small desk lamp
Item no: KX1929 
Size: 95 * 70 * 170 mm
Weight: about 80g
Material: wood, paper, battery box, switch, terminal wire, led and sponge
Color: wood
Battery use: yes
Packing: 500 PCS
Rules: 600 * 450 * 550 mm


Small desk lamp can be put on plane stage, have stage lamp holder, it is to have lamp holder, battery box, switch, LED lamp bead, conductor to wait for composition. Its function is to focus the light in a small area, easy to work and study, colorful desk lamp, equipped with colorful slow flashing LED beads will change a variety of colors.


Scientific implications:

Desk lamp is the small home appliance that cannot little in our life, it basically is to gather lamplight inside the area of a small piece, facilitate us to learn and work, but do you know it is those components that have those components to make up? How does it bring us light? Now let's assemble the little lamp by ourselves

   Understand simple circuit construction
   Can draw the circuit diagram easily

Experimental cognition:

 The function of the electronic components and their representation in the circuit;

1 battery ---- to supply electric energy --
2 light bulb ---- converts electrical energy into light


3 wires ---- -- connecting and conducting current < Water flow in the pipe called water flow, electricity flow in the wire called current, that is, electrical energy along the transmission of electricity toward a certain direction of regular flow, is invisible, touch, the current speed of 300,000 kilometers per second

 Switch - control circuit closure and disconnection

 5 battery box -- fixed battery with + - symbols for positive and negative poles

Scientific development
 The first common means of lighting were candles, kerosene or gas lamps. This lamp burns kerosene and gas. Therefore has a heavy black smoke and pungent odor, and often add fuel, scrubbing the chimney, and therefore is not very convenient, is more serious is that this kind of lamp is easy to fire disaster, for many years, many scientists tried, want to create a safe and convenient lamp, until October 21, 1879, an American inventor Thomas Edison through long-term repeated experiments, finally lit the world's first light have use value of the electric light, the lamp is a witness of human conquest of the dark night, since then, the name of the inventor, like he invented electric light, walked into the thousands, he, is the praise for later generations; The king of invention, Thomas Edison
Safety voltage, refers to the voltage that does not cause direct death or disability to people, and allows continuous contact under general environmental conditions, safety extra-low voltage; 36 v

Definition of circuit diagram; Use the wire to connect the power supply, switch \"electric construction\", with electrical appliances, ammeter, voltmeter and so on to form a circuit, in accordance with the unified symbol will express them, so draw out is called circuit diagram

Lab report 

Students can learn more about series and parallel circuits through books and the Internet

Make desk lamp with one's own hands, oneself can doodle, write, send friend, send classmate, it is not necessarily costly, but it is certainly close. Small lamp, let it warm your heart.

\"Paper cup small lamp\", beautiful appearance, simple production, easy to succeed, suitable for the lower grade children to make. Environmental protection materials are used, that is, the discarded water cups in our daily life are turned into treasures, and after simple production, they become all kinds of beautiful decorative night lights, so as to realize the reuse of wastes and achieve the purpose of energy conservation and environmental protection.
How it works: this is a typical switch circuit. The battery provides power, and the switch controls the current on and off. When the switch is on, the current flows through the switch.