Simple inverter built by SG3524

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

Photocoupler

The inverter circuit designed using the SG3524 chip features a straightforward architecture that eliminates the need for a specialized transformer. Instead, it generates a square wave output. In this setup, the SG3524 serves as a square wave generator, driving power transistors to convert direct current (DC) into alternating current (AC). As a dual-ended output pulse width modulation chip, the SG3524 comes in a dual-row 16-pin in-line plastic package (DIP-16) and operates within a power supply voltage range of 8V to 35V.

The circuit diagram for the inverter built around the SG3524 chip is illustrated below:

Key components in this circuit include field-effect transistors (FETs) and transformers. The choice of two FETs depends on the desired output power; they must have identical specifications. If the performance of the initial pair doesn’t meet the power requirements, additional FETs can be connected in parallel. Transformers can be sourced from standard 220V/2×12V power frequency transformers, with their power capacity tailored to specific needs. The square wave oscillation frequency generated by the SG3524 is determined by external resistors and capacitors connected to pins 6 and 7. Adjusting the values of these components allows fine-tuning of the frequency to suit different applications.

Overall, this design provides an efficient and cost-effective solution for converting DC to AC without the complexity of a traditional inverter. It's particularly useful in scenarios where space constraints or simplicity are critical considerations. Additionally, the flexibility of the SG3524 chip ensures adaptability across various power levels, making it a versatile choice for numerous applications ranging from small electronic devices to larger systems requiring robust power conversion capabilities.