10pcs Electronic DIY LED Dimming Lights Series and Parallel Circuit Technology Small Production Kit
Shipping:Standard Shipping about 10-25 business days
The purpose of the experiment
1. Understand and recognize the light-emitting diodes and illuminate the light-emitting diodes (LEDs);
2. Understand the role of understanding resistance, series and parallel resistance;
3. Understand the self-locking switch;
4. Understand and recognize adjustable resistors and use adjustable resistors;
Step 1:The long leg of the light-emitting diode (LED) is the positive pole, and the short leg is the negative pole. First, the long wire of the LED is connected to the black wire (negative electrode) of the battery case, and the short leg of the LED is connected to the red wire (positive electrode) of the battery case. At this time, the light emitting diode (LED) is not lit. Then send it over again, let the long leg of the LED connect to the red line of the battery box, and the short leg of the LED is connected to the black line of the battery box. At this time, the LED lights up, indicating that the LED is in one-way operation and the single-pass characteristic of the diode .
Step 2:In the circuit of the experimental step 1, a resistor of 220 ohms is inserted in series, and the brightness of the LED lamp is lowered, and the resistance hinders the current.
Step 3:Connect a 220 ohm resistor in parallel with the resistance in the circuit of the experimental board 2. The brightness of the LED is increased, indicating that the total resistance of the resistor in the circuit is reduced after the resistors are connected in parallel.
Step 4:Change the two resistors of the experimental step 3 from parallel to series. After the series connection, the brightness of the LED lamp is the lowest. After the series connection of the resistors, the total resistance of the resistor in the circuit increases.
Step 5:Replace the original resistor with a potentiometer. The potentiometer has 3 feet, and the resistance of pins 1 and 3 is fixed. The resistance of pins 1 and 2, 2 feet and 3 feet can be changed by adjusting the potentiometer knob. When experimenting, you can pick up 2 of them. The foot has to experiment many times, adjust the potentiometer knob to observe the change of LED brightness, so that you can fully understand the potentiometer.
Step 6:Know the self-locking. Press and wait for the light to be on, then press the light to turn off.
10 x DIY LED Dimming Lights Technology Small Production Kit
Customers Also Viewed
50pcs TDA2030A 6-12V AC/DC Single Power Supply Audio Amplifier Board Module$88.32Power Supply ModuleAdd to cart
Specifications1. Onboard TDA2030A audio power amplifier chip.2. Mono 18W power amplifier circuit design.3. Socket onboard horn .4. The onboard 10 k adjustable resistance, can adjust the volume of the amplification.5. The onboard power light.6. Chip has lead to the main pin, can directly input audio signal.7. Working voltage:6 – 12V.8. Board size:33 x 25 x …
20Pcs 7mL Round Bottom Centrifuge Tube Clear Polypropylene EP Tube with Cap$7.60Lab ChemicalsAdd to cart
SpecificationMaterial:Polypropylene(PP)Capacity:7mLColor:ClearSize:15*63mm(D*H)Quantity:20PcsFeatures1. Disposable centrifuge tube, clear white, round bottom design.2. Made from high quality PP, high transparency, no bubble and impurities.3. Attached cap design with high leak-tightness, avoid sample leakage effectively.4. High temperature, high pressure sterilization, acid and organic solvents resistance.5. Applications:HPLC sample preparation, biotechnology and life science, environmental research, removal of microspheres in aqueous solution, …
3Pcs RobotDyn Microphone Sound Measure Module Voice Sensor Board with Digital and Analog$17.33Sensor & Detector ModuleAdd to cart
Schematic:http://img.staticbg.com/file/products/20171225001847SoundDetect.pdfFeatureThe Sound measure is Sensor module is based on a microphone and a power amplifier.It can be used for measuring the sound strength of the environment. The value of digital output can be adjusted by the potentiometer. Also, can use Analog output to get an analog variable signal.For Sound Measure has two outputsAO – analog …
48Pcs Electrical Wiring Household 3PIN Docking Connector Electrical Connectors Wire Terminal Block Universal Electrical Wire Connector$64.79ConnectorsAdd to cart
DescriptionDurableWith test holeIndependent touch pointsHigh quality copper and PC flame retardant materialsSpecificationMaterial:PC+DuPont PA+Electrolytic copper+Nickel-chrome alloy steelColor:Grey and orangeShape:RectangleInterface Type:AC / DCCurrent:32ARated Power:7kwVoltage:25V-4KVWeight:541.2gQuantity:48Feature1. The wiring is stable and reliable:there is no loose wire, there is a risk of crisp tape, transparent and safe to see.2. With test hole:With test hole, measure voltage without removing tape.3. Simple …
5pcs DIY Multi Harmonic Oscillator Scintillator Module DIY Electronic Bistable Starter Kits$9.19DIY Electronic KitsAdd to cart
DescriptionWorking voltage:DC2V – 15VBoard size:23 x 27mmThe circuit is a typical self-excited multi-resonance circuit, the circuit suite is simple, easy to understand, interesting, rich theoretical knowledge, especially suitable for beginners to assemble and use. The circuit is provided with explanatory information.How it works:When the power is switched on, two transistors compete for the lead, but …
Fish Tank Aquarium CO2 Diffuser Check Valve U Shape Glass Tube Suction Cup Kit$14.16Electrical Pump & ValveAdd to cart
Fish Tank Aquarium CO2 Diffuser Check Valve U Shape Glass Tube Suction Cup KitSpecificationCondition:100% Brand newModel:688120Material:rubber & glassColor:transparentDiffuser length:62.8mm/2.47inU shape glass tube length:65.4mm/2.57inDiameter of U shape glass and diffuser glass:2mm/0.07inQuantity:1 set Fitment:suitable for Aquarium, Fish TankFeature1.Solid glass, nice-looking and uneasy to break,U-shaped air intake.2.Check valve with stable performance.3.Bubble counter to bring high counting precision and …
Sipeed M1 Dock Development Board + 2.4 inch 320*240 LCD Screen + OV2640 Camera Kit$72.36Raspberry Pi & Orange PiAdd to cart
DescriptionSimple M1 backplane with OV2640 camera, 2.4 inch 320*240 LCD, microphone, PA, TF card slot, onboard USB to serial port chip can be downloaded and debugged directly, can run face detection routine, voice recognition routine, send type c Adapters.Dock board:full 2.54 pin header, can be used as adapter boardSpecifiationsFit for:Sipeed M1 / Sipeed M1 WResource– …