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FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Description: The dimming circuit can make the voltage at both ends of the bulb change in the range of tens to 200 volts, and the dimming effect is remarkable. In the circuit, R2, R3, R4, RP1, C1 and VT1 constitute a single junction transistor oscillator circuit, which is used to generate trigger pulses.When the capacitor is charged by R4 and RP1, the voltage Ue increases gradually. When the Ue reaches the peak voltage, e B1 turns on and the voltage on the capacitor outputs a pulse voltage to R2 via e-b1. Because the resistance of R4 and RP1 is large, when the voltage on capacitor drops to the trough voltage, the current supplied by R4 and RP1 is less than the trough current, which can not meet the conduction requirements, so the single-junction transistor restores the blocking state. Thereafter, the capacitor recharges and repeats the above process. As a result, a sawtooth wavy voltage is formed on the capacitor and a pulse voltage is formed on R2. During each half cycle of AC voltage, the single-junction transistor will output this pulse to trigger the gate of the thyristor, which will turn on the thyristor and light up the lamp. Change the resistance value of RP1, that is, change the oscillation frequency of sawtooth wave, thus change the size of thyristor conduction angle, and then change the output voltage of controlled rectifier circuit to achieve the purpose of adjusting the brightness of the bulb. Input voltage: 220V Size: 45 x 30mm Package Included: 1 x DIY BT33 Table Lamp Dimmable Optical Circuit Kit DIY BT33 Table Lamp Dimmable Optical Circuit Kit LED Display Module Kit DIY BT33 Table Lamp Dimmable Optical Circuit Kit LED Display Module Kit DIY BT33 Table Lamp Dimmable Optical Circuit Kit LED Display Module Kit

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Description: The dimming circuit can make the voltage at both ends of the bulb change in the range of tens to 200 volts, and the dimming effect is remarkable. In the circuit, R2, R3, R4, RP1, C1 and VT1 constitute a single junction transistor oscillator circuit, which is used to generate trigger pulses.When the capacitor is charged by R4 and RP1, the voltage Ue increases gradually. When the Ue reaches the peak voltage, e B1 turns on and the voltage on the capacitor outputs a pulse voltage to R2 via e-b1. Because the resistance of R4 and RP1 is large, when the voltage on capacitor drops to the trough voltage, the current supplied by R4 and RP1 is less than the trough current, which can not meet the conduction requirements, so the single-junction transistor restores the blocking state. Thereafter, the capacitor recharges and repeats the above process. As a result, a sawtooth wavy voltage is formed on the capacitor and a pulse voltage is formed on R2. During each half cycle of AC voltage, the single-junction transistor will output this pulse to trigger the gate of the thyristor, which will turn on the thyristor and light up the lamp. Change the resistance value of RP1, that is, change the oscillation frequency of sawtooth wave, thus change the size of thyristor conduction angle, and then change the output voltage of controlled rectifier circuit to achieve the purpose of adjusting the brightness of the bulb. Input voltage: 220V Size: 45 x 30mm Package Included: 3 x DIY BT33 Table Lamp Dimmable Optical Circuit Kit

LED Bicycle Headlamp Kit Be safer at night by making sure you are equipped with this LED bicycle headlamp kit. Decided how to use it by either attaching it to your actual cycle with the provided fixture or wear it around your head with the included strap. There are three different type of modes, which are steady, low light and strobe so you can decide what light is best to use when using this torch. The actual lamp contains a Cree T6 LED, which emits up to a maximum of 1200 lumens; therefore you get a long and clear view of the road ahead. As this head torch uses 10 watt power it will provide ample usage time and as it comes with a built-in battery it can be easily recharged. At a Glance... LED Bicycle Headlamp Kit Cree T6 LEDs 1200 lumens (Max) 3x Modes 4400mAh Batter Bicycle + Headlamp Fixtures Manufacturer Specifications General LED luminous flux: 1200Lumens (Max) Power: 10W Battery: 4400mAh 3 Light Functions: Steady, Low light, Strobe Intelligent control circuits Third gear dimming Memory circuit Switch: End-cap press ON/OFF Dimensions Main Product Dimensions: 56x41x41 mm (L x W x D) Main Product Weight: 90g Product Notes Battery: Built In Package Contents Headlight Strap Battery Charging Adapter Plastic Rings x2

Kit Light Box Back Ground Portable Mini Light Room Photo Studio Photography Specifications: Supplied with 2 backdrop(white & black) to suit your needs better Material: Plastic (Polypropylene) Foldable design, Easy for you to store and carry about Ideal for you to shoot for small products Use micro USB cable or your phone power charger as power supply Item Size: 22.6 * 23 * 24cm Magnetic structure, easy for you to assemble Style: Portable Photo Photography Lighting Tent Kit Backdrop Size: 48 * 21cm Colour: White Super bright LED beads, provide average light for your product Package Included: 1 * Light box (with LED light) 1 * White Backdrops 1 * Black Backdrops 1 * USB cable I ONLY POST TO ADDRESSES IN SOUTH AFRICA - NO INTERNATIONAL SALES  

LED Ring Light W/ Tripod Stand Kit For Camera Phone Selfie Video Youtube Live Photography Ring-light.

  This kit walks you through the basics of Arduino and electronics in a hands-on way. You will be able to build 15 projects using components that let you control the physical world through different kinds of sensors and actuators. Once you have mastered this knowledge, you will have a palette of code and circuits to create something beautiful, and make someone smile with what you invent. So build, hack and share! Projects you can make: - 01 GET TO KNOW YOUR TOOLS: an introduction to the concepts you'll need to use this kit - 02 SPACESHIP INTERFACE: design the control panel for your starship - 03 LOVE-O-METER: measure how hot-blooded you are - 04 COLOUR MIXING LAMP: produce any colour with a lamp that uses light as an input - 05 MOOD CUE: clue people in to how you're doing - 06 LIGHT THEREMIN: create a musical instrument you play by waving your hands - 07 KEYBOARD INSTRUMENT: play music and make some noise with this keyboard - 08 DIGITAL HOURGLASS: a light-up hourglass that can stop you from working too much - 09 MOTORIZED PINWHEEL: a coloured wheel that will make your head spin - 10 ZOETROPE: create a mechanical animation you can play forward or backward - 11 CRYSTAL BALL: a mystical tour to answer all your tough questions - 12 KNOCK LOCK: tap out the secret code to open the door - 13 TOUCHY-FEEL LAMP: a lamp that responds to your touch - 14 TWEAK THE ARDUINO LOGO: control your personal computer from your Arduino - 15 HACKING BUTTONS: create a master control for all your devices! The kit includes: 1 x Arduino Projects Book (170 pages); 1 x Arduino UNO rev.3; 1 x USB cable; 1 x breadboard; 1 x wood base; 1 x 9 V battery snap; 70 x hard cable; 2 x flexible cable; 6 x photoresistor; 3 x trimmer d10 kohm; 10 x push button; 1 x temperature sensor; 1 x tilt sensor; 1 x LCD (16x2i); 1 x LED (white); 1 x LED (RGB); 8 x LED (red); 8 x LED (green); 8 x LED (yellow); 3 x LED (blue); 1 x CC motor 6/9 V; 1 x servomotor; 1 x piezo; 1 x H bridge; 2 x photocoupler; 5 x BC547; 2 x IRF520; 5 x 100 nF capacitor; 3 x100 µF capacitor; 5 x 100 pF capacitor; 5 x 1N4007 diode; 3 x transparent jelly (red, green, blue); 1 x male strip connector (40x1); 20 x 220 ohm resistor; 5 x 560 ohm resistor; 5 x 1 kohm resistor; 5 x 4.7 kohm resistor; 10 x 10 kohm resistor; 5 x 1 Mohm resistor; 5 x 10 Mohm resistor.

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Description: LED Helping Hand Magnifying Soldering Iron Stand Lens Magnifier Clamp Tool Kit   Specification: Material: Acrylonitrile-butadiene-styrene / Metal / Acrylic optical lens Product ratio: 3 times (big lens) / 4.5 times (small lens) Diameter of lens: 75mm (big lens) / 20mm (small lens) Mode of battery: 3 x AAA(not incluide) Weight: 520g Fit for maintaining LED lights ect.   Package includeds: 1 x LED Helping Hand Magnifier 1 x USB Cable   Details pictures:

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