原标题：SG3524打造的简单逆变器

　　该逆变器电路结构简单，无需特制变压器，输出波形为方波。电路使用了一块SG3524开关稳压电源控制芯片，在本电路中将其应用为方波发生器，驱动功率管完成直流到交流电的逆变过程。SG3524是双端输出式脉宽调制芯片，双列16脚直插式塑料封装(DIP-16)，工作电源电压范围8V~35V。

　　由SG3524芯片构建的逆变器电路如图所示：

　　电路中除SG3524外的关键元器件是场效应管和变压器，两只场效应管的选择根据需要的输出功率来定，型号要一致，若双管的输出功率达不到要求还可多只并联。变压器用一般的220V/2×12V工频变压器即可，功率也是根据实际需要决定。SG3524的方波振荡频率由6、7脚外接的电阻、电容决定，如若频率不合适可调整此RC的值。

　　SG3524

　　调节脉宽调制器

　　描述

　　The SG2524 and SG3524 devices incorporate all the functions required in the construction of a regulating power supply, inverter, or switching regulator on a single chip. They also can be used as the control element for high-power-output applications. The SG2524 and SG3524 were designed for switching regulators of either polarity, transformer-coupled dc-to-dc converters, transformerless voltage doublers, and polarity-converter applications employing fixed-frequency, pulse-width modulation (PWM) techniques. The complementary output allows either single-ended or push-pull application. Each device includes an on-chip regulator, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted pass transistors, a high-gain comparator, and current-limiting and shutdown circuitry.

　　特性

　　Complete Pulse-Width Modulation (PWM) Power-Control Circuitry

　　Uncommitted Outputs for Single-Ended or Push-Pull Applications

　　8 mA (TYP) Standby Current