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本文介绍的由CMOS电路构成的功率调节器,可以对灯具、电热器具、电扇等的功率进行调节控制,用途十分广泛。它电路简单,成本低廉,很适合于电子爱好者自制。 电路工作原理 该功率调节器的电路原理如图所示。市电经电容C1降压后,由D1、D2整流,再经DW、C2稳压滤波后得到9V直流工作电压。接通电源时,由于C3、C4的作用,IC1(CD4022)的复位端得到一个脉冲信号,电路自动复位;同时,CP端((14)脚)也得到一个脉冲信号,电路处于初始状态,Q0(②脚)输出高电平。此后,每按一次AN按钮,CP端均能得到一个脉冲信号。按照图中接法,IC1输
This article describes the CMOS circuit constituted by the power regulator, lamps, electric appliances, fans and other power regulation control, a very wide range of uses. Its circuit is simple, low cost, it is suitable for electronic hobby self-made. Circuit works The power regulator circuit as shown. Mains through the capacitor C1 step-down by the D1, D2 rectifier, and then by DW, C2 regulator filter to get 9V DC working voltage. When the power is turned on, due to the action of C3 and C4, a reset signal of IC1 (CD4022) will get a pulse signal and the circuit will reset automatically. Meanwhile, CP pin ((14)) also gets a pulse signal, (② feet) output high. Since then, each time you press the AN button, CP end can get a pulse signal. According to the figure connection, IC1 lose