Automatic voltage regulator power supply circuit composed of integrated circuit and two-way thyristor - Power Circuit - Circuit Diagram
The power circuit is shown in the figure. Components such as ICl form a voltage comparator. When the grid voltage changes, the DC voltage after rectification and Cl filtering is also changed by VD. This varying voltage is compared as a sampled voltage to a stable DC voltage. As the grid voltage changes from low to high, the voltage comparators A, B, and C gradually output low levels.
In the figure, T1: autotransformer; Y2: sampling transformer; ICl: LM339; IC2: CD4070; IC3: TWH9205; IC4 ~ IC7: TWH8778; IC8: W7806; resistance Rl, R2: 150Ω; R3 ~ R9: 10kΩ; Rl0 ~Rl3: 20kΩ; R14: 20kΩ, 4W; thermistor RT: 47kΩ; RPl: 680Ω; Rp2: 4.7kΩ; Rp3: 100kΩ; Cl: 47μF16V; C2: 0.1μF; C3: 100μF16V; VD1: lN4002; VD2: 2CW54; thyristor SCRl ~ SCR4 can be reasonably selected according to the size of the load power.
performance, wide application, wide illumination range, easy to use. LED lamp sealing, dust and insect proof, less cleaning, high light rate, pure light color, no glare, intelligent life, the beauty of details. Selection of good material production, beautiful and practical, heat dissipation without pressure, prevent aging, long bright as new. Good color, easy to clean. We also have Japanese LED bedroom lamp, Japanese LED lamp, Japanese standard LED lighting and so on.
Japanese Lamp,Japanese LED Bedroom Lamp,Japanese LED Light,LED Lighting Japanese Standard
Dongguan baiyou electronic co.,ltd , https://www.dgbaiyou.com