Price: $6.99 - $5.99
(as of Jun 02,2023 14:46:24 UTC – Details)
💎【Dimmable Small Table lamp】:After welding and installation, you only need to connect the lamp head and plug in the bulb to use
⚡【Supply voltage】:220V AC
🎯【Circuit principle and introduction of key components】:
🎯【1】:Bulb, switch S, rectifier tubes D1~D4, thyristor Q406 and power supply form the main circuit; the trigger circuit is formed by potentiometer RP1A, capacitor C1, resistors R1 and R2.
🎯【2】:After the 220V AC power supply is connected, the pulsating DC voltage is obtained through VD1~VD4 full-bridge rectification and added to RP1A to charge the capacitor C1. When the voltage across C1 rises to a certain level, the thyristor Q1 will be triggered, and the bulb will light up.
🎯【3】:Similarly, adjusting the charge/discharge time constant of RP1A to change C1, thus changing the length of the trigger pulse, changes the conduction angle (conduction degree) of Q1, and achieves the purpose of adjusting the brightness of the bulb.
🍀【DIY Soldering Kit】: It is widely used in schools to help students learn basic mechanical and electronic skills.There are many life scenarios for this circuit application, and it is a kind of circuit that circuit designers need to master.
🍀【Easy Assembly】: The connection that was clearly mapped and labeled on the board makes it easy to assemble. Even beginners can easily solder successfully.
📞【Wholesale business】:We have been engaged in the wholesale and retail business of electronic related products for a long time. Welcome letter to discuss wholesale business. The larger the amount, the better the price.
⚡【Supply voltage】:220V AC
🎯【Circuit principle and introduction of key components】:
🎯【1】:Bulb, switch S, rectifier tubes D1~D4, thyristor Q406 and power supply form the main circuit; the trigger circuit is formed by potentiometer RP1A, capacitor C1, resistors R1 and R2.
🎯【2】:After the 220V AC power supply is connected, the pulsating DC voltage is obtained through VD1~VD4 full-bridge rectification and added to RP1A to charge the capacitor C1. When the voltage across C1 rises to a certain level, the thyristor Q1 will be triggered, and the bulb will light up.
🎯【3】:Similarly, adjusting the charge/discharge time constant of RP1A to change C1, thus changing the length of the trigger pulse, changes the conduction angle (conduction degree) of Q1, and achieves the purpose of adjusting the brightness of the bulb.
🍀【DIY Soldering Kit】: It is widely used in schools to help students learn basic mechanical and electronic skills.There are many life scenarios for this circuit application, and it is a kind of circuit that circuit designers need to master.
