Electric circuit kit

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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

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

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Alesis DM10X Electric Drum Kit - Six-piece configuration with 10/10/12/12¿ Toms and 12¿ Snare Four-piece cymbal set with 12¿ Hi-Hat, two 14¿ Crashes, and 16¿ three-zone Ride Heavy-duty, chrome-plated steel rack with hinged, Alesis quick-release clamps Pad clamps feature T-bolts for easy no-tools adjustments More than 1,000 uncompressed, sample-based sounds featuring Dynamic Articulation(tm) Works with iPad via Apple USB Adaptor (sold separately) Includes fully adjustable snare stand for optimal positioning and crosstalk reduction Integrated cymbal arms, convertible to boom or straight New-look DM10 high-definition drum module with updated appearance Comes with Alesis logo plate Includes: DM10 drum module (3) RealHead 12" drum pads (2) RealHead 10" drum pads RealHead Kick pad* DMPad 12" Hi-Hat (2) DMPad 14" Crash DMPad 16" Ride RealHat pedal XRack, complete with all clamps and arms Snare stand Module mount Cable snake Cable wrap strips Drum key Allen wrench Power supply Quick start guide User manual *Kick pedal sold separately. *

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DIY Electic Skateboard Kit Parts For 80MM Wheels Package Included: Motor mount for 5065/5055 motor X1 (18MM hole) Pulley for 80MM wheel X 1 Pulley for motor X 1 (for 8mm shaft) 15MM belt X1 Screw to fix the gear on the wheel X 5 Screw to fix the gear on the motor X 4 Here is the (←click here) for your reference.

DIY Electic Skateboard Kit Parts For 80MM Wheels Package Included: Motor mount for 5065/5055 motor X1 (18MM hole) Pulley for 80MM wheel X 1 Pulley for motor X 1 (for 8mm shaft) 15MM belt X1 Screw to fix the gear on the wheel X 5 Screw to fix the gear on the motor X 4