Diy bt33 table lamp

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

The movie light box is A6 size, including 3 lines balustrades to installing letters and marks.It is used to send messages and create signs. The origin of this design came from a traditional movie signal. theyre not just announcing movie showtimes anymore. Perfect for adding to a gallery wall, using as a party prop or personalizing your nightstand, these light boxes will instantly brighten up any room. Our card contains in addition to the conventional 26-letter,It also contains Special symbols,cartoon delicate expressions, as applied to more scenarios, let you be in at the same time of immersion in DIY fun follow one's inclinations show you emotion, give yourself to other people bring more joy and satisfaction. Type: led light box letters Input voltage: 220 (V) Luminous flux: 600 (LM) shell material: ABS Product size: 14.8 * 9.8 * 3.8cm/5.8*3.9*1.5 inch Packing size: 15.7 * 11.3 * 4.8cm /6.2*4.4*1.9 inch Product + Package Weight: 0.2kg /0.44ib Can be dimmed: Can not class: IP65 Use range: wedding Christmas birthday holiday room decoration lamp gift table white artifacts sleep lamp DIY letters light box features: DIY letter light box power: 3 Note: 4 * AA battery (not included) or DC5V Adapter (not included)single light 10 LED lights Features: with a magnetic A6 letter combination light box children shooting props 90 letters color expression box light box certification: CE, ROSE supplier original packaging CUSTOMER We provide worry-free 60 days.if for some reason you don't want it or you are not satisfied,then just let us know,We will solve it till your 100% satisfaction.

The movie light box is A4 size, including 3 lines balustrades to installing letters and marks.It is used to send messages and create signs. The origin of this design came from a traditional movie signal. theyre not just announcing movie showtimes anymore. Perfect for adding to a gallery wall, using as a party prop or personalizing your nightstand, these light boxes will instantly brighten up any room. our card contains in addition to the conventional 26-letter,It also contains Special symbols,cartoon delicate expressions, as applied to more scenarios, let you be in at the same time of immersion in DIY fun follow one's inclinations show you emotion, give yourself to other people bring more joy and satisfaction. Type: led light box letters Material: ABS Product size: 11.8"l x 9"w x 2.2"h Packing size: 12"l x 9"w x 2.4"h Product + Package Weight: 1.85ib Can be dimmed: Can not Class: IP65 Use range: wedding Christmas birthday holiday room decoration lamp gift table white artifacts sleep lamp DIY letters light box features: DIY letter light box Font: Bebas font Note: 6 * AA battery (not included) or DC5V Adapter (not included) Waterproof: Not waterproof Product Included LED light box * 1 USB charging cable * 1 85pcs Black letters, numbers & Symbols Extra 85 Emoji Signs CUSTOMER We provide worry-free 60 days.if for some reason you don't want it or you are not satisfied,then just let us know,We will solve it till your 100% satisfaction.